BACKGROUND In severe cases of coronary artery disease,percutaneous coronary intervention provide promising results.The stent used could be a drug-eluting stent(DES)or a titanium-nitride-oxide coated stent(TiNOS).AIM T...BACKGROUND In severe cases of coronary artery disease,percutaneous coronary intervention provide promising results.The stent used could be a drug-eluting stent(DES)or a titanium-nitride-oxide coated stent(TiNOS).AIM To compare the 5-year effectiveness and safety of the two stent types.METHODS The following systematic review and meta-analysis was conducted in accordance with the preferred reporting items for systematic reviews and meta-analysis guidelines,and PubMed/MEDLINE,Scopus,and Cochrane Central were searched from inception till August 2023.Primary outcomes were major adverse cardiac events(MACE),cardiac death,myocardial infarction(MI),cardiac death or MI,and ischemia-driven total lesion revascularization(ID-TLR).RESULTS Four randomized controlled trials(RCT),which analyzed a sum total of 3045 patients with acute coronary syndrome(ACS)after a median follow-up time of 5 years were included.Though statistically insignificant,an increase in the ID-TLR was observed in patients receiving TiNOSs vs DESs.In addition,MI,cardiac death and MI,and definite stent thrombosis(DST)were significantly decreased in the TiNOS arm.Baseline analysis revealed no significant results with meta-regression presenting non-ST elevated MI(NSTEMI)as a statistically significant covariate in the outcome of MACE.CONCLUSION TiNOS was found to be superior to DES in terms of MI,cardiac death or MI,and DST outcomes,however,the effect of the two stent types on ID-TLR and MACE was not significant.A greater number of studies are required to establish an accurate comparison of patient outcomes in TiNOS and DES.展开更多
There is a growing body of clinical research on the utility of synthetic data derivatives,an emerging research tool in medicine.In nephrology,clinicians can use machine learning and artificial intelligence as powerful...There is a growing body of clinical research on the utility of synthetic data derivatives,an emerging research tool in medicine.In nephrology,clinicians can use machine learning and artificial intelligence as powerful aids in their clinical decision-making while also preserving patient privacy.This is especially important given the epidemiology of chronic kidney disease,renal oncology,and hypertension worldwide.However,there remains a need to create a framework for guidance regarding how to better utilize synthetic data as a practical application in this research.展开更多
To review studies on hypertension in Nigeria over the past five decades in terms of prevalence,awareness and treatment and complications.Following our search on Pubmed,African Journals Online and the World Health Orga...To review studies on hypertension in Nigeria over the past five decades in terms of prevalence,awareness and treatment and complications.Following our search on Pubmed,African Journals Online and the World Health Organization Global cardiovascular infobase,1060 related references were identified out of which 43 were found to be relevant for this review.The overall prevalence of hypertension in Nigeria ranges from 8%-46.4% depending on the study target population,type of measurement and cut-off value used for defining hypertension.The prevalence is similar in men and women(7.9%-50.2% vs 3.5%-68.8%,respectively) and in the urban(8.1%-42.0%) and rural setting(13.5%-46.4%).The pooled prevalence increased from 8.6% from the only study during the period from 1970-1979 to 22.5%(2000-2011).Awareness,treatment and control of hypertension were generally low with attendant high burden of hypertension related complications.In order to improve outcomes of cardiovascular disease in Africans,public health education to improve awareness of hypertension is required.Further epidemiological studies on hypertension are required to adequately understand and characterize the impact of hypertension in society.展开更多
Onco-Nephrology is an emerging subspecialty of Nephrology that focuses on a broad spectrum of renal disorders that can arise in patients with cancer.It encompasses acute kidney injury(AKI),complex fluid,electrolyte,an...Onco-Nephrology is an emerging subspecialty of Nephrology that focuses on a broad spectrum of renal disorders that can arise in patients with cancer.It encompasses acute kidney injury(AKI),complex fluid,electrolyte,and acid-base disorders,as well as chronic kidney disease caused or exacerbated by cancer and/or its treatment.In many such scenarios including AKI and hyponatremia,objective evaluation of hemodynamics is vital for appropriate management.Point of care ultrasonography(POCUS)is a limited ultrasound exam performed at the bedside and interpreted by the treating physician intended to answer focused clinical questions and guide therapy.Compared to conventional physical examination,POCUS offers substantially higher diagnostic accuracy for various structural and hemodynamic derangements.In this narrative review,we provide an overview of the utility of POCUS enhanced physical examination for the Onconephrologist supported by the current evidence and our experience-based opinion.展开更多
Background:We analysed data garnered during the ongoing Italian nationwide coronavirus disease 2019(COVID-19)vaccination campaign for comparing early COVID-19 monovalent vaccine efficacy in older persons who received ...Background:We analysed data garnered during the ongoing Italian nationwide coronavirus disease 2019(COVID-19)vaccination campaign for comparing early COVID-19 monovalent vaccine efficacy in older persons who received the primary vaccination cycle,the first vaccine booster,and the second vaccine booster.Methods:We conducted a retrospective analysis of early COVID-19 monovalent vaccine efficacy(i.e.,within 120 days)against COVID-19 related hospitalizations,intensive care unit(ICU)admissions and deaths in older persons(i.e.,aged≥80 years),by accessing official data of the COVID-19 national integrated surveillance program instituted by the Italian National Institute of Health.Vaccine efficacy was compared(odds ratio;OR)among cohorts receiving the primary vaccination cycle,the first vaccine booster,and the second vaccine booster.Results:A consistent decline could be seen in the rate of COVID-19 hospitalizations,ICU admissions and deaths with increasing number of monovalent immunizations.Within 120 days of administration,the first and second vaccine boosters had superior efficacy compared to the primary vaccination cycle,reducing the odds of all endpoints between 62%-71%and 69%-84%,respectively.A modestly superior early efficacy could also be noted for the second versus the first monovalent vaccine booster(ORs of all endpoints further reduced by 18%-48%).Conclusion:Since an increasing number of immunizations is associated with a lower risk of unfavourable COVID-19 outcomes,vaccine boosters may be useful for limiting the clinical burden of this infectious disease in elderly populations.展开更多
Approximately 30%-50% of people are recognized to have low levels of vitamin D,and insufficiency and deficiency of vitamin D are recognized as global health problems worldwide.Although the presence of hypovitamin D in...Approximately 30%-50% of people are recognized to have low levels of vitamin D,and insufficiency and deficiency of vitamin D are recognized as global health problems worldwide.Although the presence of hypovitamin D increases the risk of rickets and fractures,low vitamin D levels are also associated with hypertension,cancer,and cardiovascular disease.In addition,diabetes mellitus(DM) and chronic kidney disease(CKD) are also related to vitamin D levels.Vitamin D deficiency has been linked to onset and progression of DM.Although in patients with DM the relationship between vitamin D and insulin secretion,insulin resistance,and β-cell dysfunction are pointed out,evidence regarding vitamin D levels and DM is contradictory,and well controlled studies are needed.In addition,vitamin D influences the renin-angiotensin system,inflammation,and mineral bone disease,which may be associated with the cause and progression CKD.There is increasing evidence that vitamin D deficiency may be a risk factor for DM and CKD;however,it remains uncertain whether vitamin D deficiency also predisposes to death from DM and CKD.Although at this time,supplementation with vitamin D has not been shown to improve glycemic control or prevent incident DM,clinical trials with sufficient sample size,study periods,and optimal doses of vitamin D supplementation are still needed.This review focuses on the mechanism of vitamin D insufficiency and deficiency in DM or CKD,and discusses the current evidence regarding supplementation with vitamin D in patients with these diseases.展开更多
We describe a patient with sudden onset of abdominal pain and ascites,leading to the diagnosis of autosomal dominant polycystic kidney disease(ADPKD).Her presentation was consistent with acute liver cyst rupture as th...We describe a patient with sudden onset of abdominal pain and ascites,leading to the diagnosis of autosomal dominant polycystic kidney disease(ADPKD).Her presentation was consistent with acute liver cyst rupture as the cause of her acute illness.A review of literature on polycystic liver disease in patients with ADPKD and current management strategies are presented.This case alerts physicians that ADPKD could occasionally present as an acute abdomen;cyst rupture related to ADPKD may be considered in the differential diagnoses of acute abdomen.展开更多
Proteinuria is a frequently detected symptom,found in 20% of pregnancies.A common reason for proteinuria in pregnancy is preeclampsia.To diagnose preeclampsia clinically and to get new insights into the pathophysiolog...Proteinuria is a frequently detected symptom,found in 20% of pregnancies.A common reason for proteinuria in pregnancy is preeclampsia.To diagnose preeclampsia clinically and to get new insights into the pathophysiology of the disease it is at first essential to be familiar with conditions in normal pregnancy.Animal models and biomarkers can help to learn more about disease conditions and to find new treatment strategies.In this article we review the changes in kidney function during normal pregnancy and the differential diagnosis of proteinuria in pregnancy.We summarize different pathophysiological theories of preeclampsia with a special focus on the renal facets of the disease.We describe the current animal models and give a broad overview of different biomarkers that were reported to predict preeclampsia or have a prognostic value in preeclampsia cases.We end with a summary of treatment options for preeclampsia related symptoms including the use of plasmapheresis as a rescue therapy for so far refractory preeclampsia.Most of these novel biomarkers for preeclampsia are not yet implemented in clinical use.Therefore,we recommend using proteinuria(measured by UPC ratio) as a screening parameter for preeclampsia.Delivery is the only curative treatment for preeclampsia.In earlypreeclampsia the primary therapy goal is to prolong pregnancy until a state were the child has an acceptable chance of survival after delivery.展开更多
BACKGROUND The prevalence of older individuals with type 2 diabetes mellitus (T2DM) is increasing due to the aging population and improved medical care. These patients are very susceptible to disease and treatment-rel...BACKGROUND The prevalence of older individuals with type 2 diabetes mellitus (T2DM) is increasing due to the aging population and improved medical care. These patients are very susceptible to disease and treatment-related hospitalizations, resulting in higher health care costs, morbidity, and decreased quality of life. However, data of treatment-related complications, especially dysglycemiarelated hospitalizations, are lacking. AIM To assess the prevalence and associated factors for dysglycemia-related hospitalizations among elderly diabetic patients in Thailand using nationwide patient sample. METHODS T2DM patients aged ≥ 65 years who received medical care at public hospitals in Thailand in the year 2014 were included. The prevalence of hospitalization due to dysglycemia within one year was examined. Multivariable logistic regression was performed to assess the independent factors associated with hospitalization due to hypoglycemia and hyperglycemia RESULTS A total of 11404 elderly T2DM patients were enrolled in this study. The mean age was 72.9 ± 5.5 years. The prevalence of hospital admissions due to diabetic ketoacidosis, hyperosmolar hyperglycemic state, hyperglycemic dehydration syndrome, and hypoglycemia among elderly T2DM patients in the year 2014 was 0.1%, 0.1%, 1.7% and 3.1%, respectively. Increased hospitalization due to hypoglycemia was associated with older age, female sex, had hypertension, dementia, lower body mass index, elevated hemoglobin A1C (HbA1C), decreased kidney function, insulin use. Increased hospitalization due to hyperglycemia was associated with dementia, depression, lower body mass index, elevated HbA1C, and insulin use. CONCLUSION The prevalence of dysglycemia-related hospitalization in elderly T2DM patients in Thailand was 4.9%. Close monitoring of blood glucose should be provided in high-risk patients for prevention and early detection for these complications.展开更多
BACKGROUND Diabetic retinopathy(DR) separately has been noted as a major public health problem worldwide as well. Currently, many studies have demonstrated an association between diabetic nephropathy and DR in type 1 ...BACKGROUND Diabetic retinopathy(DR) separately has been noted as a major public health problem worldwide as well. Currently, many studies have demonstrated an association between diabetic nephropathy and DR in type 1 diabetes mellitus(T1DM) patients, but this association is less strong in T2DM. The evidence for an association between renal function and DR and visual impairment among T2DM patients is limited, particularly in the Asian population.AIM To assess the association between glomerular filtration rate(GFR) and DR, severe DR, and severe visual impairment among T2DM patients in Thailand.METHODS We conducted a nationwide cross-sectional study based on the DM/HT study of the Medical Research Network of the Consortium of Thai Medical Schools. This study evaluated adult T2DM patients from 831 public hospitals in Thailand in the year 2013. GFR was categorized into ≥ 90, 60-89, 30-59 and < 30 mL/min/1.73 m^2.The association between GFR and DR, severe DR, and severe visual impairment were assessed using multivariate logistic regression.RESULTS A total of 13192 T2DM patients with available GFR were included in the analysis.The mean GFR was 66.9 ± 25.8 mL/min/1.73 m^2. The prevalence of DR,proliferative DR, diabetic macular edema, and severe visual impairment were 12.4%, 1.8%, 0.2%, and 2.1%, respectively. Patients with GFR of 60-89, 30-59 and <30 mL/min/1.73 m^2 were significantly associated with increased DR and severe DR when compared with patients with GFR of ≥ 90 mL/min/1.73 m^2. In addition,increased severe visual impairment was associated with GFR 30-59 and < 30 m L/min/1.73 m^2.CONCLUSION Decreased GFR was independently associated with increased DR, severe DR, and severe visual impairment. GFR should be monitored in diabetic patients for DR awareness and prevention.展开更多
The number of patients reinitiating dialysis after a failed transplant increases over time and has more than doubled between the year 1988 and 2010 (an increase from 2463 to 5588). More importantly, patients returni...The number of patients reinitiating dialysis after a failed transplant increases over time and has more than doubled between the year 1988 and 2010 (an increase from 2463 to 5588). More importantly, patients returning to dialysis have been shown to have a greater thanthree-fold increase in the annual adjusted mortality rates compared with those with a functioning graft. Continuation of immunosuppression to preserve residual graft function has been implicated to be a contributing factor, seemingly due to immunosuppression-ass-ociated cardiovascular and infectious complications and malignancy risk, among others. Nonetheless, maintenance low-dose immunosuppression has been suggested to confer survival beneft in patients returning to peritoneal dialysis. Whether early vs late reinitiation of dialysis or whether transplantectomy has an impact on patient survival remains poorly defined. Consensus guidelines for the management of a failed allograft are lacking. In this article, we present a literature overview on the ideal timing of dialysis reinitiation after graft loss, the management of immunosuppression after graft failure, and the risks and benefits of transplantectomy. The authors’ perspectives on the management of this special patient population are also discussed.展开更多
BACKGROUND Focal segmental glomerulosclerosis(FSGS)is one of the most common glomerular diseases leading to renal failure.FSGS has a high risk of recurrence after kidney transplantation.Prevention of recurrent FSGS us...BACKGROUND Focal segmental glomerulosclerosis(FSGS)is one of the most common glomerular diseases leading to renal failure.FSGS has a high risk of recurrence after kidney transplantation.Prevention of recurrent FSGS using rituximab and/or plasmapheresis has been evaluated in multiple small studies with conflicting results.AIM To assess the risk of recurrence of FSGS after transplantation using prophylactic rituximab with or without plasmapheresis,and plasmapheresis alone compared to the standard treatment group without preventive therapy.METHODS This meta-analysis and systematic review were performed by first conducting a literature search of the MEDLINE,EMBASE,and Cochrane databases,from inception through March 2021;search terms included‘FSGS,’’steroid-resistant nephrotic syndrome’,‘rituximab,’and‘plasmapheresis,’.We identified studies that assessed the risk of post-transplant FSGS after use of rituximab with or without plasmapheresis,or plasmapheresis alone.Inclusion criteria were:Original,published,randomized controlled trials or cohort studies(either prospective or retrospective),case-control,or cross-sectional studies;inclusion of odds ratio,relative risk,and standardized incidence ratio with 95%confidence intervals(CI),or sufficient raw data to calculate these ratios;and subjects without interventions(controls)being used as comparators in cohort and cross-sectional studies.Effect estimates from individual studies were extracted and combined using a random effects model.RESULTS Eleven studies,with a total of 399 kidney transplant recipients with FSGS,evaluated the use of rituximab with or without plasmapheresis;thirteen studies,with a total of 571 kidney transplant recipients with FSGS,evaluated plasmapheresis alone.Post-transplant FSGS recurred relatively early.There was no significant difference in recurrence between the group that received rituximab(with or without plasmapheresis)and the standard treatment group,with a pooled risk ratio of 0.82(95%CI:0.47-1.45,I2=65%).Similarly,plasmapheresis alone was not associated with any significant difference in FSGS recurrence when compared with no plasmapheresis;the pooled risk ratio was 0.85(95%CI:0.60-1.21,I2=23%).Subgroup analyses in the pediatric and adult groups did not yield a significant difference in recurrence risk.We also reviewed and analyzed posttransplant outcomes including timing of recurrence and graft survival.CONCLUSION Overall,the use of rituximab with or without plasmapheresis,or plasmapheresis alone,is not associated with a lower risk of FSGS recurrence after kidney transplantation.Future studies are required to assess the effectiveness of rituximab with or without plasmapheresis among specific patient subgroups with high-risk for FSGS recurrence.展开更多
AIM To evaluate the incidence and characteristics of kidney stones in kidney transplant recipients. METHODS A literature search was performed using MEDLINE, EMBASE, and Cochrane Database of Systematic Reviews from the...AIM To evaluate the incidence and characteristics of kidney stones in kidney transplant recipients. METHODS A literature search was performed using MEDLINE, EMBASE, and Cochrane Database of Systematic Reviews from the inception of the databases through March 2016. Studies assessing the incidence of kidney stones in kidney transplant recipients were included. We applied a randomeffects model to estimate the incidence of kidney stones.RESULTS Twenty one studies with 64416 kidney transplant patients were included in the analyses to assess the incidence of kidney stones after kidney transplantation. The estimated incidence of kidney stones was 1.0%(95%CI: 0.6%-1.4%). The mean duration to diagnosis of kidney stones after kidney transplantation was 28 ± 22 mo. The mean age of patients with kidney stones was 42 ± 7 years. Within reported studies, approximately 50% of kidney transplant recipients with kidney stones were males. 67% of kidney stones were calcium-based stones(30% mixed CaO x/CaP, 27%CaO x and 10%CaP), followed by struvite stones(20%) and uric acid stones(13%).CONCLUSION The estimated incidence of kidney stones in patients after kidney transplantation is 1.0%. Although calcium based stones are the most common kidney stones aftertransplantation, struvite stones(also known as "infection stones") are not uncommon in kidney transplant recipients. These findings may impact the prevention and clinical management of kidney stones after kidney transplantation.展开更多
African Americans have exceptionally high rates of hypertension and hypertension related complications. It is commonly reported that the blood pressure lowering efficacy of renin angiotensin system(RAS) inhibitors is ...African Americans have exceptionally high rates of hypertension and hypertension related complications. It is commonly reported that the blood pressure lowering efficacy of renin angiotensin system(RAS) inhibitors is attenuated in African Americans due to a greater likelihood of having a low renin profile. Therefore these agents are often not recommended as initial therapy in African Americans with hypertension. However, the high prevalence of comorbid conditions, such as diabetes, cardiovascular and chronic kidney disease makes treatment with RAS inhibitors more compelling. Despite lower circulating renin levels and a less significant fall in blood pressure in response to RAS inhibitors in African Americans, numerous clinical trials support the efficacy of RAS inhibitors to improve clinical outcomes in this population, especially in those with hypertension and risk factors for cardiovascular and related diseases. Here, we discuss the rationale of RAS blockade as part of a comprehensive approach to attenuate the high rates of premature morbidity and mortality associated with hypertension among African Americans.展开更多
BACKGROUND Hemodialysis machine-generated circuit pressures and clearance profiles are potential predictors of quality assurances. In our practice, we previously we observed that elevated static access pressures were ...BACKGROUND Hemodialysis machine-generated circuit pressures and clearance profiles are potential predictors of quality assurances. In our practice, we previously we observed that elevated static access pressures were associated with abnormal Kt/V values, high access recirculation and deviation of the Kt/V profile (Abnormal Kt/V profile) from normally expected values (Normal Kt/V profile). AIM To hypothesize that static or derived access pressures would correlate with direct intra-access blood flow rates and that clearance (Kt/V) profiles would correlate with measured Kt/V values. METHODS Static access pressures, real-time adequacy of dialysis and intra-access blood flow were investigated in end stage renal disease patients undergoing hemodialysis. Wilcoxon-Mann-Whitney test, chi-square test or Fisher’s exact test was used to investigate differences between the groups;Spearman’s rank correlation test to investigate relationships between static pressures, direct intra-access pressures and Kt/V profiles;and multinomial logistic regression models to identify the independent effect of selected variables on Kt/V profiles. Odds ratio were calculated to measure the association between the variables and Kt/V profiles. RESULTS One hundred and seven patients were included for analysis. There were no significant differences between genders, and types of vascular access between the normal vs. abnormal clearance (Kt/V) profile groups. No significant correlation could be demonstrated between static access pressures and Kt/V profiles, static access pressures and intra-access blood flow, intra-access blood flow and Kt/V profiles, measured Kt/V and Kt/V profiles or recirculation and Kt/V profiles. CONCLUSION In this study utilizing measured versus estimated data, we could not validate that dialysis machine generated elevated static pressures predict intra-access blood flow disturbances or that abnormal Kt/V profiles predict access recirculation or inadequate dialysis. These parameters, though useful estimates, cannot be accepted as quality assurance for dialysis adequacy or access function without further evidences.展开更多
<strong>Background:</strong> The kidney volume is a very reliable ultrasound measure, reflecting contributions from all kidney parts. It could be affected by gender, body size and disease conditions. Its u...<strong>Background:</strong> The kidney volume is a very reliable ultrasound measure, reflecting contributions from all kidney parts. It could be affected by gender, body size and disease conditions. Its use in renal function assessment is based on its correlation with the glomerular filtration rate (GFR). <strong>Objectives:</strong> To assess the determinants and clinical correlates of kidney volume in hypertension and in chronic kidney disease (CKD). <strong>Materials and Methods:</strong> The two-center study was carried out at the Federal Medical Centre, Abeokuta (June-December 2017) and Babcock University Teaching Hospital, Ilishan-Remo (August 2019-January 2020). The kidneys of sixty participants who had hypertension without kidney disease (HWKD) and 58 with CKD were scanned from the front and back and their blood samples were taken for electrolytes and hemoglobin concentration. <strong>Result:</strong> The participants with CKD were significantly older than those with hypertension, P < 0.001. The mean kidney volume of hypertensives, 132.4 ± 18.3, was significantly higher than those with CKD, 63.7 ± 5.9, P < 0.001. The glomerular filtration rate (GFR) and hemoglobin concentration were significantly higher in hypertensives than in CKD, P < 0.001, P < 0.001 respectively. The systolic blood pressure (SBP), creatinine and the albumin creatinine ratio (ACR) were significantly higher in CKD than in hypertension, P < 0.001, P < 0.001 and P < 0.001 respectively. <strong>Conclusion:</strong> The mean kidney volume was higher in hypertension and in males. The GFR and hemoglobin levels were significantly higher in hypertension than in CKD while blood pressure and ACR were significantly higher in CKD than in hypertension. Kidney volume was positively and negatively correlated with GFR and ACR respectively.展开更多
Hyponatremia, serum sodium 〈 135 mEq/L, is themost common electrolyte abnormality and is in a state of flux. Hyponatremic patients are symptomatic and should be treated but our inability to consistently determine the...Hyponatremia, serum sodium 〈 135 mEq/L, is themost common electrolyte abnormality and is in a state of flux. Hyponatremic patients are symptomatic and should be treated but our inability to consistently determine the causes of hyponatremia has hampered the delivery of appropriate therapy. This is especially applicable to differentiating syndrome of inappropriate antidiuresis (SIAD) from cerebral salt wasting (CSW) or more appropriately, renal salt wasting (RSW), because of divergent therapeutic goals, to water-restrict in SIAD and administer salt and water in RSW. Differentiating SIAD from RSW is extremely diffcult because of identical clinical parameters that defne both syndromes and the mindset that CSW occurs rarely. It is thus insuffcient to make the diagnosis of SIAD simply because it meets the defned characteristics. We review the pathophysiology of SIAD and RSW, the evolution of an algorithm that is based on determinations of fractional excretion of urate and distinctive responses to saline infusions to differentiate SIAD from RSW. This algorithm also simplifes the diagnosis of hyponatremic patients due to Addison’s disease, reset osmostat and prerenal states. It is a common perception that we cannot accurately assess the volume status of a patient by clinical criteria. Our algorithm eliminates the need to determine the volume status with the realization that too many factors affect plasma renin, aldosterone, atrial/brain natriuretic peptide or urine sodium concentration to be useful. Reports and increasing recognition of RSW occurring in patients without evidence of cerebral disease should thus elicit the need to consider RSW in a broader group of patients and to question any diagnosis of SIAD. Based on the accumulation of supporting data, we make the clinically important proposal to change CSW to RSW, to eliminate reset osmostat as type C SIAD and stress the need for a new defnition of SIAD.展开更多
<strong>Introduction:</strong> Uric acid is a product of purine metabolism and elevated serum concentration are very common in, and linked with hypertension and chronic kidney disease, conditions associate...<strong>Introduction:</strong> Uric acid is a product of purine metabolism and elevated serum concentration are very common in, and linked with hypertension and chronic kidney disease, conditions associated with heavy health burden and cardiovascular complications particularly in sub Sahara Africa. An assessment of factors relating hyperuricemia to hypertension and chronic kidney disease would therefore be necessary as way of mitigating the poor quality of life, morbidity and mortality associated with these diseases in low income nations. <strong>Methods:</strong> A single centre, descriptive comparative study in which the demographic, clinical and laboratory data of hypertensive and non-dialyzed chronic kidney disease (CKD) patients were analyzed. Serum biochemical parameters with uric acid, hematocrit and urine dip strip protein were assessed. Predictors of hyperuricemia were determined using multivariate analysis. <strong>Results:</strong> One hundred and thirty nine hypertensives and 69 CKD were studied. The mean age of the participants was 54.3 ± 11.7 years, hypertensives (52.9 ± 15.7 years) and CKD (57.3 ± 16.1 years). Both groups had more males, P = 0.8. Majority (78.3%) of the CKD cohorts had stage 4 or 5 (non-dialyzed) disease. The systolic and diastolic blood pressure, creatinine and uric acid were lower in hypertension than in CKD, P = 0.07, P = 0.05, P < 0.001 and P = 0.004 respectively. The hematocrit, albumin and GFR were higher in HTN than CKD, P < 0.001, P < 0.001 and P < 0.001 respectively. The prevalence of hyperuricemia was 56.2%. The mean uric acid was 505.9 ± 23.6 mmol/L, 382 7 ± 10.5 mmol/L for hypertensive and 755.9 ± 14.8 mmol/L for CKD, P < 0.001. The prevalence of systolic HTN, proteinuria, hypoalbuminemia and anemia were 51%, 75%, 46% and 59%, and were higher in males. Hyperuricemia was related to advancing age, proteinuria, elevated creatinine, hypoalbuminemia, anemia and hypertriglyceridemia. Proteinuria (OR—4.66, 95% CI—2.42 - 9.65), elevated creatinine (OR—3.12, 95% CI—2.40 - 6.92), hypoalbuminemia (OR—2.92, 95% CI—1.83 - 5.78) and anemia (OR—4.01, 95% CI—3.78 - 7.99) independently predicted hyperuricemia.<strong> Conclusion:</strong> Hyperuricemia is commoner in CKD than hypertension and was higher in males and positively correlated with the blood pressure, proteinuria and creatinine, but negatively related to hematocrit, albumin and glomerular filtration rate. Independent predictors of hyperuricemia were proteinuria, elevated creatinine, hypoalbuminemia and anemia. Measures are needed to prevent and treat hyperuricemia to reduce the health burden associated with hypertension and CKD.展开更多
BACKGROUND Many studies have demonstrated an association between type 2 diabetes mellitus(T2DM)and atrial fibrillation(AF).However,the potential independent contributions of T2DM and AF to the prevalence of visual imp...BACKGROUND Many studies have demonstrated an association between type 2 diabetes mellitus(T2DM)and atrial fibrillation(AF).However,the potential independent contributions of T2DM and AF to the prevalence of visual impairment have not been evaluated.AIM To determine whether such an association between T2DM and incident AF with visual impairment exists,and if so,the prevalence and magnitude of this association.METHODS We conducted a nationwide cross-sectional study based on the DM/HT study of the Medical Research Network of the Consortium of Thai Medical Schools.This study had evaluated adult T2DM patients from 831 public hospitals in Thailand in the year 2013.T2DM patients were categorized into two groups:patients without and with incident AF.T2DM patients without AF were selected as the reference group.The association between incident AF and visual impairment among T2DM patients was assessed using multivariate logistic regression.RESULTS A total of 27281 T2DM patients with available eye examination data were included in this analysis.The mean age was 60.7±10.5 years,and 31.2%were male.The incident AF was 0.2%.The prevalence of severe visual impairment in all T2DM patients,T2DM patients without AF,and T2DM patients with incident AF were 1.4%,1.4%,and 6.3%,respectively.T2DM patients with incident AF were associated with an increased OR of 3.89(95%CI:1.17-13.38)for severe visual impairment compared with T2DM patients without AF.CONCLUSION T2DM patients with incident AF were independently associated with increased severe visual impairment.Therefore,early eye screening should be provided for these high-risk individuals.展开更多
Background: Diabetes and diabetes-related complications are major causes of morbidity and mortality in the United States. Depressive symptoms and perceived stress have been identified as possible risk factors for beta...Background: Diabetes and diabetes-related complications are major causes of morbidity and mortality in the United States. Depressive symptoms and perceived stress have been identified as possible risk factors for beta cell dysfunction and diabetes. The purpose of this study was to assess associations between depression symptoms and perceived stress with beta cell function between African and Haitian Americans with and without type 2 diabetes. Participants and Methods: Informed consent and data were available for 462 participants (231 African Americans and 231 Haitian Americans) for this cross-sectional study. A demographic questionnaire developed by the Primary Investigator was used to collect information regarding age, gender, smoking, and ethnicity. Diabetes status was determined by self-report and confirmed by fasting blood glucose. Anthropometrics (weight, and height and waist circumference) and vital signs (blood pressure) were taken. Blood samples were drawn after 8 10 hours over-night fasting to measure lipid panel, fasting plasma glucose and serum insulin concentrations. The homeostatic model assessment, version 2 (HOMA2) computer model was used to calculate beta cell function. Depression was assessed using the Beck Depression Inventory-II (BDI-II) and stress levels were assessed using the Perceived Stress Scale (PSS). Results: Moderate to severe depressive symptoms were more likely for persons with diabetes (p = 0.030). There were no differences in perceived stress between ethnicity and diabetes status (p = 0.283). General linear models for participants with and without type 2 diabetes using beta cell function as the dependent variable showed no association with depressive symptoms and perceived stress;however, Haitian Americans had significantly lower beta cell function than African Americans both with and without diabetes and adjusting for age, gender, waist circumference and smoking. Further research is needed to compare these risk factors in other race/ethnic groups.展开更多
文摘BACKGROUND In severe cases of coronary artery disease,percutaneous coronary intervention provide promising results.The stent used could be a drug-eluting stent(DES)or a titanium-nitride-oxide coated stent(TiNOS).AIM To compare the 5-year effectiveness and safety of the two stent types.METHODS The following systematic review and meta-analysis was conducted in accordance with the preferred reporting items for systematic reviews and meta-analysis guidelines,and PubMed/MEDLINE,Scopus,and Cochrane Central were searched from inception till August 2023.Primary outcomes were major adverse cardiac events(MACE),cardiac death,myocardial infarction(MI),cardiac death or MI,and ischemia-driven total lesion revascularization(ID-TLR).RESULTS Four randomized controlled trials(RCT),which analyzed a sum total of 3045 patients with acute coronary syndrome(ACS)after a median follow-up time of 5 years were included.Though statistically insignificant,an increase in the ID-TLR was observed in patients receiving TiNOSs vs DESs.In addition,MI,cardiac death and MI,and definite stent thrombosis(DST)were significantly decreased in the TiNOS arm.Baseline analysis revealed no significant results with meta-regression presenting non-ST elevated MI(NSTEMI)as a statistically significant covariate in the outcome of MACE.CONCLUSION TiNOS was found to be superior to DES in terms of MI,cardiac death or MI,and DST outcomes,however,the effect of the two stent types on ID-TLR and MACE was not significant.A greater number of studies are required to establish an accurate comparison of patient outcomes in TiNOS and DES.
文摘There is a growing body of clinical research on the utility of synthetic data derivatives,an emerging research tool in medicine.In nephrology,clinicians can use machine learning and artificial intelligence as powerful aids in their clinical decision-making while also preserving patient privacy.This is especially important given the epidemiology of chronic kidney disease,renal oncology,and hypertension worldwide.However,there remains a need to create a framework for guidance regarding how to better utilize synthetic data as a practical application in this research.
文摘To review studies on hypertension in Nigeria over the past five decades in terms of prevalence,awareness and treatment and complications.Following our search on Pubmed,African Journals Online and the World Health Organization Global cardiovascular infobase,1060 related references were identified out of which 43 were found to be relevant for this review.The overall prevalence of hypertension in Nigeria ranges from 8%-46.4% depending on the study target population,type of measurement and cut-off value used for defining hypertension.The prevalence is similar in men and women(7.9%-50.2% vs 3.5%-68.8%,respectively) and in the urban(8.1%-42.0%) and rural setting(13.5%-46.4%).The pooled prevalence increased from 8.6% from the only study during the period from 1970-1979 to 22.5%(2000-2011).Awareness,treatment and control of hypertension were generally low with attendant high burden of hypertension related complications.In order to improve outcomes of cardiovascular disease in Africans,public health education to improve awareness of hypertension is required.Further epidemiological studies on hypertension are required to adequately understand and characterize the impact of hypertension in society.
文摘Onco-Nephrology is an emerging subspecialty of Nephrology that focuses on a broad spectrum of renal disorders that can arise in patients with cancer.It encompasses acute kidney injury(AKI),complex fluid,electrolyte,and acid-base disorders,as well as chronic kidney disease caused or exacerbated by cancer and/or its treatment.In many such scenarios including AKI and hyponatremia,objective evaluation of hemodynamics is vital for appropriate management.Point of care ultrasonography(POCUS)is a limited ultrasound exam performed at the bedside and interpreted by the treating physician intended to answer focused clinical questions and guide therapy.Compared to conventional physical examination,POCUS offers substantially higher diagnostic accuracy for various structural and hemodynamic derangements.In this narrative review,we provide an overview of the utility of POCUS enhanced physical examination for the Onconephrologist supported by the current evidence and our experience-based opinion.
文摘Background:We analysed data garnered during the ongoing Italian nationwide coronavirus disease 2019(COVID-19)vaccination campaign for comparing early COVID-19 monovalent vaccine efficacy in older persons who received the primary vaccination cycle,the first vaccine booster,and the second vaccine booster.Methods:We conducted a retrospective analysis of early COVID-19 monovalent vaccine efficacy(i.e.,within 120 days)against COVID-19 related hospitalizations,intensive care unit(ICU)admissions and deaths in older persons(i.e.,aged≥80 years),by accessing official data of the COVID-19 national integrated surveillance program instituted by the Italian National Institute of Health.Vaccine efficacy was compared(odds ratio;OR)among cohorts receiving the primary vaccination cycle,the first vaccine booster,and the second vaccine booster.Results:A consistent decline could be seen in the rate of COVID-19 hospitalizations,ICU admissions and deaths with increasing number of monovalent immunizations.Within 120 days of administration,the first and second vaccine boosters had superior efficacy compared to the primary vaccination cycle,reducing the odds of all endpoints between 62%-71%and 69%-84%,respectively.A modestly superior early efficacy could also be noted for the second versus the first monovalent vaccine booster(ORs of all endpoints further reduced by 18%-48%).Conclusion:Since an increasing number of immunizations is associated with a lower risk of unfavourable COVID-19 outcomes,vaccine boosters may be useful for limiting the clinical burden of this infectious disease in elderly populations.
文摘Approximately 30%-50% of people are recognized to have low levels of vitamin D,and insufficiency and deficiency of vitamin D are recognized as global health problems worldwide.Although the presence of hypovitamin D increases the risk of rickets and fractures,low vitamin D levels are also associated with hypertension,cancer,and cardiovascular disease.In addition,diabetes mellitus(DM) and chronic kidney disease(CKD) are also related to vitamin D levels.Vitamin D deficiency has been linked to onset and progression of DM.Although in patients with DM the relationship between vitamin D and insulin secretion,insulin resistance,and β-cell dysfunction are pointed out,evidence regarding vitamin D levels and DM is contradictory,and well controlled studies are needed.In addition,vitamin D influences the renin-angiotensin system,inflammation,and mineral bone disease,which may be associated with the cause and progression CKD.There is increasing evidence that vitamin D deficiency may be a risk factor for DM and CKD;however,it remains uncertain whether vitamin D deficiency also predisposes to death from DM and CKD.Although at this time,supplementation with vitamin D has not been shown to improve glycemic control or prevent incident DM,clinical trials with sufficient sample size,study periods,and optimal doses of vitamin D supplementation are still needed.This review focuses on the mechanism of vitamin D insufficiency and deficiency in DM or CKD,and discusses the current evidence regarding supplementation with vitamin D in patients with these diseases.
文摘We describe a patient with sudden onset of abdominal pain and ascites,leading to the diagnosis of autosomal dominant polycystic kidney disease(ADPKD).Her presentation was consistent with acute liver cyst rupture as the cause of her acute illness.A review of literature on polycystic liver disease in patients with ADPKD and current management strategies are presented.This case alerts physicians that ADPKD could occasionally present as an acute abdomen;cyst rupture related to ADPKD may be considered in the differential diagnoses of acute abdomen.
文摘Proteinuria is a frequently detected symptom,found in 20% of pregnancies.A common reason for proteinuria in pregnancy is preeclampsia.To diagnose preeclampsia clinically and to get new insights into the pathophysiology of the disease it is at first essential to be familiar with conditions in normal pregnancy.Animal models and biomarkers can help to learn more about disease conditions and to find new treatment strategies.In this article we review the changes in kidney function during normal pregnancy and the differential diagnosis of proteinuria in pregnancy.We summarize different pathophysiological theories of preeclampsia with a special focus on the renal facets of the disease.We describe the current animal models and give a broad overview of different biomarkers that were reported to predict preeclampsia or have a prognostic value in preeclampsia cases.We end with a summary of treatment options for preeclampsia related symptoms including the use of plasmapheresis as a rescue therapy for so far refractory preeclampsia.Most of these novel biomarkers for preeclampsia are not yet implemented in clinical use.Therefore,we recommend using proteinuria(measured by UPC ratio) as a screening parameter for preeclampsia.Delivery is the only curative treatment for preeclampsia.In earlypreeclampsia the primary therapy goal is to prolong pregnancy until a state were the child has an acceptable chance of survival after delivery.
文摘BACKGROUND The prevalence of older individuals with type 2 diabetes mellitus (T2DM) is increasing due to the aging population and improved medical care. These patients are very susceptible to disease and treatment-related hospitalizations, resulting in higher health care costs, morbidity, and decreased quality of life. However, data of treatment-related complications, especially dysglycemiarelated hospitalizations, are lacking. AIM To assess the prevalence and associated factors for dysglycemia-related hospitalizations among elderly diabetic patients in Thailand using nationwide patient sample. METHODS T2DM patients aged ≥ 65 years who received medical care at public hospitals in Thailand in the year 2014 were included. The prevalence of hospitalization due to dysglycemia within one year was examined. Multivariable logistic regression was performed to assess the independent factors associated with hospitalization due to hypoglycemia and hyperglycemia RESULTS A total of 11404 elderly T2DM patients were enrolled in this study. The mean age was 72.9 ± 5.5 years. The prevalence of hospital admissions due to diabetic ketoacidosis, hyperosmolar hyperglycemic state, hyperglycemic dehydration syndrome, and hypoglycemia among elderly T2DM patients in the year 2014 was 0.1%, 0.1%, 1.7% and 3.1%, respectively. Increased hospitalization due to hypoglycemia was associated with older age, female sex, had hypertension, dementia, lower body mass index, elevated hemoglobin A1C (HbA1C), decreased kidney function, insulin use. Increased hospitalization due to hyperglycemia was associated with dementia, depression, lower body mass index, elevated HbA1C, and insulin use. CONCLUSION The prevalence of dysglycemia-related hospitalization in elderly T2DM patients in Thailand was 4.9%. Close monitoring of blood glucose should be provided in high-risk patients for prevention and early detection for these complications.
文摘BACKGROUND Diabetic retinopathy(DR) separately has been noted as a major public health problem worldwide as well. Currently, many studies have demonstrated an association between diabetic nephropathy and DR in type 1 diabetes mellitus(T1DM) patients, but this association is less strong in T2DM. The evidence for an association between renal function and DR and visual impairment among T2DM patients is limited, particularly in the Asian population.AIM To assess the association between glomerular filtration rate(GFR) and DR, severe DR, and severe visual impairment among T2DM patients in Thailand.METHODS We conducted a nationwide cross-sectional study based on the DM/HT study of the Medical Research Network of the Consortium of Thai Medical Schools. This study evaluated adult T2DM patients from 831 public hospitals in Thailand in the year 2013. GFR was categorized into ≥ 90, 60-89, 30-59 and < 30 mL/min/1.73 m^2.The association between GFR and DR, severe DR, and severe visual impairment were assessed using multivariate logistic regression.RESULTS A total of 13192 T2DM patients with available GFR were included in the analysis.The mean GFR was 66.9 ± 25.8 mL/min/1.73 m^2. The prevalence of DR,proliferative DR, diabetic macular edema, and severe visual impairment were 12.4%, 1.8%, 0.2%, and 2.1%, respectively. Patients with GFR of 60-89, 30-59 and <30 mL/min/1.73 m^2 were significantly associated with increased DR and severe DR when compared with patients with GFR of ≥ 90 mL/min/1.73 m^2. In addition,increased severe visual impairment was associated with GFR 30-59 and < 30 m L/min/1.73 m^2.CONCLUSION Decreased GFR was independently associated with increased DR, severe DR, and severe visual impairment. GFR should be monitored in diabetic patients for DR awareness and prevention.
文摘The number of patients reinitiating dialysis after a failed transplant increases over time and has more than doubled between the year 1988 and 2010 (an increase from 2463 to 5588). More importantly, patients returning to dialysis have been shown to have a greater thanthree-fold increase in the annual adjusted mortality rates compared with those with a functioning graft. Continuation of immunosuppression to preserve residual graft function has been implicated to be a contributing factor, seemingly due to immunosuppression-ass-ociated cardiovascular and infectious complications and malignancy risk, among others. Nonetheless, maintenance low-dose immunosuppression has been suggested to confer survival beneft in patients returning to peritoneal dialysis. Whether early vs late reinitiation of dialysis or whether transplantectomy has an impact on patient survival remains poorly defined. Consensus guidelines for the management of a failed allograft are lacking. In this article, we present a literature overview on the ideal timing of dialysis reinitiation after graft loss, the management of immunosuppression after graft failure, and the risks and benefits of transplantectomy. The authors’ perspectives on the management of this special patient population are also discussed.
文摘BACKGROUND Focal segmental glomerulosclerosis(FSGS)is one of the most common glomerular diseases leading to renal failure.FSGS has a high risk of recurrence after kidney transplantation.Prevention of recurrent FSGS using rituximab and/or plasmapheresis has been evaluated in multiple small studies with conflicting results.AIM To assess the risk of recurrence of FSGS after transplantation using prophylactic rituximab with or without plasmapheresis,and plasmapheresis alone compared to the standard treatment group without preventive therapy.METHODS This meta-analysis and systematic review were performed by first conducting a literature search of the MEDLINE,EMBASE,and Cochrane databases,from inception through March 2021;search terms included‘FSGS,’’steroid-resistant nephrotic syndrome’,‘rituximab,’and‘plasmapheresis,’.We identified studies that assessed the risk of post-transplant FSGS after use of rituximab with or without plasmapheresis,or plasmapheresis alone.Inclusion criteria were:Original,published,randomized controlled trials or cohort studies(either prospective or retrospective),case-control,or cross-sectional studies;inclusion of odds ratio,relative risk,and standardized incidence ratio with 95%confidence intervals(CI),or sufficient raw data to calculate these ratios;and subjects without interventions(controls)being used as comparators in cohort and cross-sectional studies.Effect estimates from individual studies were extracted and combined using a random effects model.RESULTS Eleven studies,with a total of 399 kidney transplant recipients with FSGS,evaluated the use of rituximab with or without plasmapheresis;thirteen studies,with a total of 571 kidney transplant recipients with FSGS,evaluated plasmapheresis alone.Post-transplant FSGS recurred relatively early.There was no significant difference in recurrence between the group that received rituximab(with or without plasmapheresis)and the standard treatment group,with a pooled risk ratio of 0.82(95%CI:0.47-1.45,I2=65%).Similarly,plasmapheresis alone was not associated with any significant difference in FSGS recurrence when compared with no plasmapheresis;the pooled risk ratio was 0.85(95%CI:0.60-1.21,I2=23%).Subgroup analyses in the pediatric and adult groups did not yield a significant difference in recurrence risk.We also reviewed and analyzed posttransplant outcomes including timing of recurrence and graft survival.CONCLUSION Overall,the use of rituximab with or without plasmapheresis,or plasmapheresis alone,is not associated with a lower risk of FSGS recurrence after kidney transplantation.Future studies are required to assess the effectiveness of rituximab with or without plasmapheresis among specific patient subgroups with high-risk for FSGS recurrence.
文摘AIM To evaluate the incidence and characteristics of kidney stones in kidney transplant recipients. METHODS A literature search was performed using MEDLINE, EMBASE, and Cochrane Database of Systematic Reviews from the inception of the databases through March 2016. Studies assessing the incidence of kidney stones in kidney transplant recipients were included. We applied a randomeffects model to estimate the incidence of kidney stones.RESULTS Twenty one studies with 64416 kidney transplant patients were included in the analyses to assess the incidence of kidney stones after kidney transplantation. The estimated incidence of kidney stones was 1.0%(95%CI: 0.6%-1.4%). The mean duration to diagnosis of kidney stones after kidney transplantation was 28 ± 22 mo. The mean age of patients with kidney stones was 42 ± 7 years. Within reported studies, approximately 50% of kidney transplant recipients with kidney stones were males. 67% of kidney stones were calcium-based stones(30% mixed CaO x/CaP, 27%CaO x and 10%CaP), followed by struvite stones(20%) and uric acid stones(13%).CONCLUSION The estimated incidence of kidney stones in patients after kidney transplantation is 1.0%. Although calcium based stones are the most common kidney stones aftertransplantation, struvite stones(also known as "infection stones") are not uncommon in kidney transplant recipients. These findings may impact the prevention and clinical management of kidney stones after kidney transplantation.
基金Supported by UL1TR000124,P30AG021684,P20-MD000182 and DK065455,National Institutes of Health
文摘African Americans have exceptionally high rates of hypertension and hypertension related complications. It is commonly reported that the blood pressure lowering efficacy of renin angiotensin system(RAS) inhibitors is attenuated in African Americans due to a greater likelihood of having a low renin profile. Therefore these agents are often not recommended as initial therapy in African Americans with hypertension. However, the high prevalence of comorbid conditions, such as diabetes, cardiovascular and chronic kidney disease makes treatment with RAS inhibitors more compelling. Despite lower circulating renin levels and a less significant fall in blood pressure in response to RAS inhibitors in African Americans, numerous clinical trials support the efficacy of RAS inhibitors to improve clinical outcomes in this population, especially in those with hypertension and risk factors for cardiovascular and related diseases. Here, we discuss the rationale of RAS blockade as part of a comprehensive approach to attenuate the high rates of premature morbidity and mortality associated with hypertension among African Americans.
基金the Gatorade Trust through funds distributed by the University of Florida,Division of Nephrology,Hypertension,and Renal Transplantation,Gainesville,FL [Awarded to Abhilash Koratala(Principal investigator)Abutaleb A Ejaz(Mentor)]
文摘BACKGROUND Hemodialysis machine-generated circuit pressures and clearance profiles are potential predictors of quality assurances. In our practice, we previously we observed that elevated static access pressures were associated with abnormal Kt/V values, high access recirculation and deviation of the Kt/V profile (Abnormal Kt/V profile) from normally expected values (Normal Kt/V profile). AIM To hypothesize that static or derived access pressures would correlate with direct intra-access blood flow rates and that clearance (Kt/V) profiles would correlate with measured Kt/V values. METHODS Static access pressures, real-time adequacy of dialysis and intra-access blood flow were investigated in end stage renal disease patients undergoing hemodialysis. Wilcoxon-Mann-Whitney test, chi-square test or Fisher’s exact test was used to investigate differences between the groups;Spearman’s rank correlation test to investigate relationships between static pressures, direct intra-access pressures and Kt/V profiles;and multinomial logistic regression models to identify the independent effect of selected variables on Kt/V profiles. Odds ratio were calculated to measure the association between the variables and Kt/V profiles. RESULTS One hundred and seven patients were included for analysis. There were no significant differences between genders, and types of vascular access between the normal vs. abnormal clearance (Kt/V) profile groups. No significant correlation could be demonstrated between static access pressures and Kt/V profiles, static access pressures and intra-access blood flow, intra-access blood flow and Kt/V profiles, measured Kt/V and Kt/V profiles or recirculation and Kt/V profiles. CONCLUSION In this study utilizing measured versus estimated data, we could not validate that dialysis machine generated elevated static pressures predict intra-access blood flow disturbances or that abnormal Kt/V profiles predict access recirculation or inadequate dialysis. These parameters, though useful estimates, cannot be accepted as quality assurance for dialysis adequacy or access function without further evidences.
文摘<strong>Background:</strong> The kidney volume is a very reliable ultrasound measure, reflecting contributions from all kidney parts. It could be affected by gender, body size and disease conditions. Its use in renal function assessment is based on its correlation with the glomerular filtration rate (GFR). <strong>Objectives:</strong> To assess the determinants and clinical correlates of kidney volume in hypertension and in chronic kidney disease (CKD). <strong>Materials and Methods:</strong> The two-center study was carried out at the Federal Medical Centre, Abeokuta (June-December 2017) and Babcock University Teaching Hospital, Ilishan-Remo (August 2019-January 2020). The kidneys of sixty participants who had hypertension without kidney disease (HWKD) and 58 with CKD were scanned from the front and back and their blood samples were taken for electrolytes and hemoglobin concentration. <strong>Result:</strong> The participants with CKD were significantly older than those with hypertension, P < 0.001. The mean kidney volume of hypertensives, 132.4 ± 18.3, was significantly higher than those with CKD, 63.7 ± 5.9, P < 0.001. The glomerular filtration rate (GFR) and hemoglobin concentration were significantly higher in hypertensives than in CKD, P < 0.001, P < 0.001 respectively. The systolic blood pressure (SBP), creatinine and the albumin creatinine ratio (ACR) were significantly higher in CKD than in hypertension, P < 0.001, P < 0.001 and P < 0.001 respectively. <strong>Conclusion:</strong> The mean kidney volume was higher in hypertension and in males. The GFR and hemoglobin levels were significantly higher in hypertension than in CKD while blood pressure and ACR were significantly higher in CKD than in hypertension. Kidney volume was positively and negatively correlated with GFR and ACR respectively.
文摘Hyponatremia, serum sodium 〈 135 mEq/L, is themost common electrolyte abnormality and is in a state of flux. Hyponatremic patients are symptomatic and should be treated but our inability to consistently determine the causes of hyponatremia has hampered the delivery of appropriate therapy. This is especially applicable to differentiating syndrome of inappropriate antidiuresis (SIAD) from cerebral salt wasting (CSW) or more appropriately, renal salt wasting (RSW), because of divergent therapeutic goals, to water-restrict in SIAD and administer salt and water in RSW. Differentiating SIAD from RSW is extremely diffcult because of identical clinical parameters that defne both syndromes and the mindset that CSW occurs rarely. It is thus insuffcient to make the diagnosis of SIAD simply because it meets the defned characteristics. We review the pathophysiology of SIAD and RSW, the evolution of an algorithm that is based on determinations of fractional excretion of urate and distinctive responses to saline infusions to differentiate SIAD from RSW. This algorithm also simplifes the diagnosis of hyponatremic patients due to Addison’s disease, reset osmostat and prerenal states. It is a common perception that we cannot accurately assess the volume status of a patient by clinical criteria. Our algorithm eliminates the need to determine the volume status with the realization that too many factors affect plasma renin, aldosterone, atrial/brain natriuretic peptide or urine sodium concentration to be useful. Reports and increasing recognition of RSW occurring in patients without evidence of cerebral disease should thus elicit the need to consider RSW in a broader group of patients and to question any diagnosis of SIAD. Based on the accumulation of supporting data, we make the clinically important proposal to change CSW to RSW, to eliminate reset osmostat as type C SIAD and stress the need for a new defnition of SIAD.
文摘<strong>Introduction:</strong> Uric acid is a product of purine metabolism and elevated serum concentration are very common in, and linked with hypertension and chronic kidney disease, conditions associated with heavy health burden and cardiovascular complications particularly in sub Sahara Africa. An assessment of factors relating hyperuricemia to hypertension and chronic kidney disease would therefore be necessary as way of mitigating the poor quality of life, morbidity and mortality associated with these diseases in low income nations. <strong>Methods:</strong> A single centre, descriptive comparative study in which the demographic, clinical and laboratory data of hypertensive and non-dialyzed chronic kidney disease (CKD) patients were analyzed. Serum biochemical parameters with uric acid, hematocrit and urine dip strip protein were assessed. Predictors of hyperuricemia were determined using multivariate analysis. <strong>Results:</strong> One hundred and thirty nine hypertensives and 69 CKD were studied. The mean age of the participants was 54.3 ± 11.7 years, hypertensives (52.9 ± 15.7 years) and CKD (57.3 ± 16.1 years). Both groups had more males, P = 0.8. Majority (78.3%) of the CKD cohorts had stage 4 or 5 (non-dialyzed) disease. The systolic and diastolic blood pressure, creatinine and uric acid were lower in hypertension than in CKD, P = 0.07, P = 0.05, P < 0.001 and P = 0.004 respectively. The hematocrit, albumin and GFR were higher in HTN than CKD, P < 0.001, P < 0.001 and P < 0.001 respectively. The prevalence of hyperuricemia was 56.2%. The mean uric acid was 505.9 ± 23.6 mmol/L, 382 7 ± 10.5 mmol/L for hypertensive and 755.9 ± 14.8 mmol/L for CKD, P < 0.001. The prevalence of systolic HTN, proteinuria, hypoalbuminemia and anemia were 51%, 75%, 46% and 59%, and were higher in males. Hyperuricemia was related to advancing age, proteinuria, elevated creatinine, hypoalbuminemia, anemia and hypertriglyceridemia. Proteinuria (OR—4.66, 95% CI—2.42 - 9.65), elevated creatinine (OR—3.12, 95% CI—2.40 - 6.92), hypoalbuminemia (OR—2.92, 95% CI—1.83 - 5.78) and anemia (OR—4.01, 95% CI—3.78 - 7.99) independently predicted hyperuricemia.<strong> Conclusion:</strong> Hyperuricemia is commoner in CKD than hypertension and was higher in males and positively correlated with the blood pressure, proteinuria and creatinine, but negatively related to hematocrit, albumin and glomerular filtration rate. Independent predictors of hyperuricemia were proteinuria, elevated creatinine, hypoalbuminemia and anemia. Measures are needed to prevent and treat hyperuricemia to reduce the health burden associated with hypertension and CKD.
文摘BACKGROUND Many studies have demonstrated an association between type 2 diabetes mellitus(T2DM)and atrial fibrillation(AF).However,the potential independent contributions of T2DM and AF to the prevalence of visual impairment have not been evaluated.AIM To determine whether such an association between T2DM and incident AF with visual impairment exists,and if so,the prevalence and magnitude of this association.METHODS We conducted a nationwide cross-sectional study based on the DM/HT study of the Medical Research Network of the Consortium of Thai Medical Schools.This study had evaluated adult T2DM patients from 831 public hospitals in Thailand in the year 2013.T2DM patients were categorized into two groups:patients without and with incident AF.T2DM patients without AF were selected as the reference group.The association between incident AF and visual impairment among T2DM patients was assessed using multivariate logistic regression.RESULTS A total of 27281 T2DM patients with available eye examination data were included in this analysis.The mean age was 60.7±10.5 years,and 31.2%were male.The incident AF was 0.2%.The prevalence of severe visual impairment in all T2DM patients,T2DM patients without AF,and T2DM patients with incident AF were 1.4%,1.4%,and 6.3%,respectively.T2DM patients with incident AF were associated with an increased OR of 3.89(95%CI:1.17-13.38)for severe visual impairment compared with T2DM patients without AF.CONCLUSION T2DM patients with incident AF were independently associated with increased severe visual impairment.Therefore,early eye screening should be provided for these high-risk individuals.
文摘Background: Diabetes and diabetes-related complications are major causes of morbidity and mortality in the United States. Depressive symptoms and perceived stress have been identified as possible risk factors for beta cell dysfunction and diabetes. The purpose of this study was to assess associations between depression symptoms and perceived stress with beta cell function between African and Haitian Americans with and without type 2 diabetes. Participants and Methods: Informed consent and data were available for 462 participants (231 African Americans and 231 Haitian Americans) for this cross-sectional study. A demographic questionnaire developed by the Primary Investigator was used to collect information regarding age, gender, smoking, and ethnicity. Diabetes status was determined by self-report and confirmed by fasting blood glucose. Anthropometrics (weight, and height and waist circumference) and vital signs (blood pressure) were taken. Blood samples were drawn after 8 10 hours over-night fasting to measure lipid panel, fasting plasma glucose and serum insulin concentrations. The homeostatic model assessment, version 2 (HOMA2) computer model was used to calculate beta cell function. Depression was assessed using the Beck Depression Inventory-II (BDI-II) and stress levels were assessed using the Perceived Stress Scale (PSS). Results: Moderate to severe depressive symptoms were more likely for persons with diabetes (p = 0.030). There were no differences in perceived stress between ethnicity and diabetes status (p = 0.283). General linear models for participants with and without type 2 diabetes using beta cell function as the dependent variable showed no association with depressive symptoms and perceived stress;however, Haitian Americans had significantly lower beta cell function than African Americans both with and without diabetes and adjusting for age, gender, waist circumference and smoking. Further research is needed to compare these risk factors in other race/ethnic groups.