BACKGROUND Prophylactic antibiotics have significantly led to a reduction in the risk of postoperative surgical site infections(SSI)in orthopaedic surgery.The aim of using antibiotics for this purpose is to achieve se...BACKGROUND Prophylactic antibiotics have significantly led to a reduction in the risk of postoperative surgical site infections(SSI)in orthopaedic surgery.The aim of using antibiotics for this purpose is to achieve serum and tissue drug levels that exceed,for the duration of the operation,the minimum inhibitory concentration of the likely organisms that are encountered.Prophylactic antibiotics reduce the rate of SSIs in lower limb arthroplasty from between 4%and 8%to between 1%and 3%.Controversy,however,still surrounds the optimal frequency and dosing of antibiotic administration.AIM To evaluate the impact of introduction of a weight-adjusted antibiotic prophylaxis regime,combined with a reduction in the duration of administration of post-operative antibiotics on SSI incidence during the 2 years following primary elective total hip and knee arthroplasty METHODS Following ethical approval,patients undergoing primary total hip arthroplasty(THA)/total knee arthroplasty(TKA)with the old regime(OR)of a preoperative dose[cefazolin 2 g intravenously(IV)],and two subsequent doses(2 h and 8 h),were compared to those after a change to a new regime(NR)of a weight-adjusted preoperative dose(cefazolin 2 g IV for patients<120 kg;cefazolin 3g IV for patients>120 kg)and a post-operative dose at 2 h.The primary outcome in both groups was SSI rates during the 2 years post-operatively.RESULTS A total of n=1273 operations(THA n=534,TKA n=739)were performed in n=1264 patients.There was no statistically significant difference in the rate of deep(OR 0.74%(5/675)vs NR 0.50%(3/598);fishers exact test P=0.72),nor superficial SSIs(OR 2.07%(14/675)vs NR 1.50%(9/598);chi-squared test P=0.44)at 2 years postoperatively.With propensity score weighting and an interrupted time series analysis,there was also no difference in SSI rates between both groups[RR 0.88(95%CI 0.61 to 1.30)P=0.46].CONCLUSION A weight-adjusted regime,with a reduction in number of post-operative doses had no adverse impact on SSI incidence in this population.展开更多
We read with interest the recent systematic reviewaArtificial intelligence and machine learning for hemorrhagic trauma careoby Peng et al.[1],which evaluated literature on machine learning(ML)in the management of trau...We read with interest the recent systematic reviewaArtificial intelligence and machine learning for hemorrhagic trauma careoby Peng et al.[1],which evaluated literature on machine learning(ML)in the management of traumatic haemorrhage.We thank the authors for their contribution to the role of ML in trauma.展开更多
The advent of biologics and small molecules in inflammatory bowel disease(IBD)has marked a significant turning point in the prognosis of IBD,decreasing the rates of corticosteroid dependence,hospitalizations and impro...The advent of biologics and small molecules in inflammatory bowel disease(IBD)has marked a significant turning point in the prognosis of IBD,decreasing the rates of corticosteroid dependence,hospitalizations and improving overall quality of life.The introduction of biosimilars has also increased affordability and enhanced access to these otherwise costly targeted therapies.Biologics do not yet represent a complete panacea:A subset of patients do not respond to first-line anti-tumor necrosis factor(TNF)-alpha agents or may subsequently demonstrate a secondary loss of response.Patients who fail to respond to anti-TNF agents typically have a poorer response rate to second-line biologics.It is uncertain which patient would benefit from a different sequencing of biologics or even a combination of biologic agents.The introduction of newer classes of biologics and small molecules may provide alternative therapeutic targets for patients with refractory disease.This review examines the therapeutic ceiling in current treatment strategies of IBD and the potential paradigm shifts in the future.展开更多
Objective:Sudden cardiac death(SCD)and malignant ventricular arrhythmia(VA)are increasingly recognized as important issues for people living with a Fontan circulation,but data are lacking.We sought to characterize the...Objective:Sudden cardiac death(SCD)and malignant ventricular arrhythmia(VA)are increasingly recognized as important issues for people living with a Fontan circulation,but data are lacking.We sought to characterize the cohort who had sudden cardiac death,most likely related to VA and/or documented VA in the Australia and New Zealand Fontan Registry including risk factors and clinical outcomes.Methods:A retrospective cohort study was performed.Inclusion criteria were documented non-sustained ventricular tachycardia,sustained ventricular tachycardia,ventricular fibrillation,resuscitated cardiac arrest or SCD>30 days post-Fontan completion.Results:Of 1611 patients,20(1.2%)had VA;14(1.0%)had VA without SCD and 6(<1%)had SCD(6%of all deaths recorded in Registry;5 of those had documented VA at the time of arrest and 1 was presumed to be VA-associated).The median age at first VA was 20.5(14–32)years,10(50%)were females,and the median age at Fontan operation was 8(4–17)years.On univariable analysis,hypoplastic left heart syndrome(p=0.03)and older age Fontan operation(p<0.001)were associated with VA.Earlier Fontan era(p<0.003),atriopulmonary Fontan(p<0.001),pre-Fontan atrioventricular valve repair(p=0.013)pre-or post-Fontan atrial arrhythmia(p=0.010)were associated with SCD.Patients with VA had a 3 times higher risk of death or heart transplant(HR 3.27(1.19,8.98),p=0.02).Conclusions:A proportion of people living with a Fontan circulation have malignant VA.Routine VA screening in this cohort is essential.More data are needed to aid risk stratification.展开更多
Continuous renal replacement therapy(CRRT)is widely used for treating critically-ill patients in the emergency department in China.Anticoagulant therapy is needed to prevent clotting in the extracorporeal circulation ...Continuous renal replacement therapy(CRRT)is widely used for treating critically-ill patients in the emergency department in China.Anticoagulant therapy is needed to prevent clotting in the extracorporeal circulation during CRRT.Regional citrate anticoagulation(RCA)has been shown to potentially be safer and more effective,and is now recommended as the preferred anticoagulant method for CRRT.However,there is still a lack of unified standards for RCA management in the world,and there are many problems in using this method in clinical practice.The Emergency Medical Doctor Branch of the Chinese Medical Doctor Association(CMDA)organized a panel of domestic emergency medicine experts and international experts of CRRT to discuss RCA-related issues,including the advantages and disadvantages of RCA in CRRT anticoagulation,the principle of RCA,parameter settings for RCA,monitoring of RCA(mainly metabolic acid-base disorders),and special issues during RCA.Based on the latest available research evidence as well as the paneled experts'clinical experience,considering the generalizability,suitability,and potential resource utilization,while also balancing clinical advantages and disadvantages,a total of 16 guideline recommendations were formed from the experts'consensus.展开更多
The management of patients with irreparable rotator cuff tears remains a challenge for orthopaedic surgeons with the final treatment option in many algorithms being either a reverse shoulder arthroplasty or a tendon t...The management of patients with irreparable rotator cuff tears remains a challenge for orthopaedic surgeons with the final treatment option in many algorithms being either a reverse shoulder arthroplasty or a tendon transfer. The long term results of these procedures are however still widely debated, especially in younger patients. A variety of arthroscopic treatment options have been proposed for patients with an irreparable rotator cuff tear without the presence of arthritis of the glenohumeral joint. These include a simple debridement with or without a biceps tenotomy, partial rotator cuff repair with or without an interval slide, tuberplasty, graft interposition of the rotator cuff, suprascapular nerve ablation, superior capsule reconstruction and insertion of a biodegradable spacer(Inspace) to depress the humeral head. These options should be considered as part of the treatment algorithm in patients with an irreparable rotator cuff and could be used as either as an interim procedure, delaying the need for more invasive surgery in the physiologically young and active, or as potential definitive procedures in the medically unfit.The aim of this review is to highlight and summarise arthroscopic procedures and the results thereof currently utilised in the management of these challenging patients.展开更多
The overall incidence of osteochondral defect in the general population is estimated to be 15 to 30 per100000 people.These lesions can become symptomatic causing pain,swelling and decreased function of the knee,and ma...The overall incidence of osteochondral defect in the general population is estimated to be 15 to 30 per100000 people.These lesions can become symptomatic causing pain,swelling and decreased function of the knee,and may eventually progress to osteoarthritis.In the young and active population,partial or total knee arthroplasty(TKA)is rarely the treatment of choice due to risk of early failure.Osteochondral allograft transplantation has been demonstrated to be a safe and effective treatment of large osteochondral and chondral defects of the knee in appropriately selected patients.The treatment reduces pain,improves function and is a viable limb salvage procedure for patients,especially young and active patients for whom TKA is not recommended.Either large dowels generated with commercially available equipment or free hand shell allografts can be implanted in more posterior lesions.Current recommendations for fresh allografts stored at4C advise implantation within 21-28 d of procurement for optimum chondrocyte viability,following screening and testing protocols.Higher rates of successful allograft transplantation are observed in younger patients,unipolar lesions,normal or corrected malalignment,and defects that are treated within 12 mo of symptom onset.Patients with bipolar lesions,uncorrectable malalignment,advanced osteoarthritis,and those over40 tend to have less favourable outcomes.展开更多
Since the first report of use of endoscopy in children in the 1970 s, there has seen an exponential growthin published experience and innovation in the field. In this review article we focus on modern age therapeutic ...Since the first report of use of endoscopy in children in the 1970 s, there has seen an exponential growthin published experience and innovation in the field. In this review article we focus on modern age therapeutic endoscopy practice, explaining use of traditional as well as new and innovative techniques, for diagnosis and treatment of diseases in the paediatric upper gastrointestinal tract.展开更多
A major concern inhibiting some clinicians from embracing peritoneal dialysis(PD) as the preferred first modality of dialysis is the effects of PD solutions on the peritoneal membrane. These anatomical and functional ...A major concern inhibiting some clinicians from embracing peritoneal dialysis(PD) as the preferred first modality of dialysis is the effects of PD solutions on the peritoneal membrane. These anatomical and functional changes predispose to complications like peritonitis,encapsulating peritoneal sclerosis and ultrafiltration failure. In recent years, "biocompatible" and glucosesparing PD regimens have been developed to minimize damage to the peritoneal membrane. Can the use of these more expensive solutions be justified on current evidence? In this review of the literature, we explore how we may individualize the prescription of biocompatible PD fluid.展开更多
<strong>Introduction:</strong> Interdialytic weight-gain (IDWG) has been linked to various complications in hemodialysis (HD) patients. <strong>Method:</strong> Prospective clinical-observation...<strong>Introduction:</strong> Interdialytic weight-gain (IDWG) has been linked to various complications in hemodialysis (HD) patients. <strong>Method:</strong> Prospective clinical-observational study to evaluate the effect of IDWG in HD patients on the rate of hospital admissions over a 12-month period, and the impact of high IDWG on the frequency of IDH. <strong>Results:</strong> Of the 240 patients, those who had IDWG ≥ 4%, 81% had at least one hospital admission due to volume-overload or the need for extra HD-session(s). On the other hand, only 19% of those having IDWG < 4% had been admitted or got extra HD sessions (p < 0.001). Of those who were admitted (over 12 months) due to volume overload;74.1% had IDWG ≥ 4%, while 25.9% had IDWG < 4% (p < 0.001). Regarding IDH, 87% of patients having IDWG ≥ 4% had at least one episode of IDH/week. On the other hand, only 22.5% of those with IDWG < 4% had one episode of IDH/week (p < 0.001). When analyzing those who had at least one IDH episode/week;72.9% of them had IDWG ≥ 4%, while only 27.1% had IDWG < 4% (p < 0.001). <strong>Conclusion:</strong> In HD patients, the frequency of hospital admission due to volume-overload and the need for extra HD-sessions is strongly related to the amount of IDWG (>4% in our patients), the same stands for the frequency of IDH. Thus, control of IDWG in HD patients is of great importance, keeping in mind the importance of the nutrition status of HD patients that may also impact IDWG.展开更多
Cardiovascular magnetic resonance is a non-invasive imaging modality which is emerging as important tool for the investigation and management of pediatric cardiovascular disease. In this review we describe the key tec...Cardiovascular magnetic resonance is a non-invasive imaging modality which is emerging as important tool for the investigation and management of pediatric cardiovascular disease. In this review we describe the key technical and practical differences between scanning children and adults, and highlight some important considerations that must be taken into account for this patient population. Using case examples commonly seen in clinical practice, we discuss the important clinical applications of cardiovascular magnetic resonance, and briefly highlight key future developments in this field.展开更多
Background The coronavirus disease 2019(COVID-19)pandemic has had a profound and prolonged impact on healthcare services and healthcare workers.Aims The Australian COVID-19 Frontline Healthcare Workers Study aimed to ...Background The coronavirus disease 2019(COVID-19)pandemic has had a profound and prolonged impact on healthcare services and healthcare workers.Aims The Australian COVID-19 Frontline Healthcare Workers Study aimed to investigate the severity and prevalence of mental health issues,as well as the social,workplace and financial disruptions experienced by Australian healthcare workers during the COVID-19 pandemic.Methods A nationwide,voluntary,anonymous,single timepoint,online survey was conducted between 27 August and 23 October 2020.Individuals self-identifying as frontline healthcare workers in secondary or primary care were invited to participate.Participants were recruited through health organisations,professional associations or colleges,universities,government contacts and national media.Demographics,home and work situation,health and psychological well-being data were collected.Results A total of 9518 survey responses were received;of the 9518 participants,7846(82.4%)participants reported complete data.With regard to age,4110(52.4%)participants were younger than 40 years;6344(80.9%)participants were women.Participants were nurses(n=3088,39.4%),doctors(n=2436,31.1%),allied health staff(n=1314,16.7%)or in other roles(n=523,6.7%).In addition,1250(15.9%)participants worked in primary care.Objectively measured mental health symptoms were common:mild to severe anxiety(n=4694,59.8%),moderate to severe burnout(n=5458,70.9%)and mild to severe depression(n=4495,57.3%).Participants were highly resilient(mean(SD)=3.2(0.66)).Predictors for worse outcomes on all scales included female gender;younger age;pre-existing psychiatric condition;experiencing relationship problems;nursing,allied health or other roles;frontline area;being worried about being blamed by colleagues and working with patients with COVID-19.Conclusions The COVID-19 pandemic is associated with significant mental health symptoms in frontline healthcare workers.Crisis preparedness together with policies and practices addressing psychological well-being are needed.展开更多
We developed and evaluated a multiplex PCR (m-PCR) for application in routine diagnostic laboratories to detect Campylobacter spp. in stool samples including C. concisus, C. jejuni, and C. coli. When this m-PCR was ap...We developed and evaluated a multiplex PCR (m-PCR) for application in routine diagnostic laboratories to detect Campylobacter spp. in stool samples including C. concisus, C. jejuni, and C. coli. When this m-PCR was applied on spiked faecal samples, C. concisus, C. jejuni, and C. coli were specifically identified at 105 cells/gm of faeces. To compare the sensitivity of the m-PCR with conventional culture techniques, the same spiked stool samples were cultured on an antibiotic free Columbia blood agar using the filtration technique. The detection limit of conventional culture method was 105 cells/gm of stool for C. concisus and 106 cells/gm of stool for C. jejuni and C. coli. The m-PCR was applied to test 127 faecal samples from children with gastroenteritis and the results were compared with the conventional bacterial cultures data. By this m-PCR technique, C. jejuni was detected in 7 samples, C. coli in 2 samples, and C. concisus in 7 samples. However, the conventional culture results for these samples were 6 for C. jejuni, 2 for C. coli and only one sample was positive for C. concisus. In total, 19 samples were positive for Campylobacter spp. by m-PCR while only 9 samples were positive for Campylobacter spp. by culture. In conclusion, m-PCR is more sensitive than the culture technique to detect C. concisus and other fastidious campylobacters in faeces.展开更多
Current available treatment options for erectile dysfunction (ED) are effective but not without failure and/or side effects. Although the development of phosphodiesterase type 5 (PDE5) inhibitors (i.e. sildenafil...Current available treatment options for erectile dysfunction (ED) are effective but not without failure and/or side effects. Although the development of phosphodiesterase type 5 (PDE5) inhibitors (i.e. sildenafil, tadalafil and vardenafil) has revolutionized the treatment of ED, these oral medications require on-demand access and are not as effective in treating ED related to diabetic, post-prostatectomy and severe veno-occlusive disease states. Improvement in the treatment of ED is dependent on understanding the regulation of human corporal smooth muscle tone and on the identification of relevant molecular targets. Future ED therapies might consider the application of molecular technologies such as gene therapy. As a potential therapeutic tool, gene therapy might provide an effective and specific means for altering intracavernous pressure "on demand" without affecting resting penile function. However, the safety of gene therapy remains a major hurdle to overcome before being accepted as a mainstream treatment for ED. Gene therapy aims to cure the underlying conditions in ED, including fibrosis. Furthermore, gene therapy might help prolong the efficacy of the PDE5 inhibitors by improving penile nitric oxide bioactivity. It is feasible to apply gene therapy to the penis because of its location and accessibility, low penile circulatory flow in the flaccid state and the presence of endothelial lined (lacunar) spaces. This review provides a brief insight of the current role of gene therapy in the management of ED.展开更多
Introduction: Surgical interventions for degenerative spondylolisthesis are varied with comparable claims of success. Fusion based technique is one of the most commonly used surgical interventions in treating this con...Introduction: Surgical interventions for degenerative spondylolisthesis are varied with comparable claims of success. Fusion based technique is one of the most commonly used surgical interventions in treating this condition. The aim of this meta-analysis is to compare the effectiveness of the Lumbar Interbody Fusion techniques (specifically Posterolateral Interbody approach—PLIF) versus Posterolateral Instrumented Fusion (PLF). The clinical outcomes investigated were: back pain, leg pain, function, Oswestery Disability Index (ODI), Disability Rating Index (DRI), fusion and revision rates if reported. Methods: Combinations of keywords and MeSH terms, where appropriate, were used to search for studies in Medline via Ovid, Embase, Cochrane Library, and Google scholar. The initial search was conducted on 10 August 2016 and updated on 13 June 2017. Eligibility criteria for the studies to be selected for this meta-analysis were: Randomised Controlled Trials (RCTs), cohort and consecutive cases studies that compared at PLIF versus PLF surgical interventions at the lumbar region. Heterogeneity indicators and Forest plot were computed using RevMan 5. Results: Out of the initial hits of 3021, 5 articles were selected as relevant and assessed for risk of bias and then data was extracted and tabulated. These 5 studies reported data from (900 patients’ records, follow up ranges from 6 months to 5 years) undergone one of 2 interventions (PLIF or PLF). The overall effect for ODI and leg pain showed no advantage of any intervention over the other while there was a greater odd ratio of fusion if the operation applied PLIF techniques (Overall Z = 2.86, p = 0.004). Conclusions: There is a need for more high quality clinical trials to compare these two interventions. However, available data indicate that there are comparable results in the main clinical outcomes between PLIF and PLF. PLIF has superior fusion rate which does not seem to affect post-operative pain ratings.展开更多
Many observers have noted that the morphological changes that occur in chronic kidney disease(CKD) patients resemble those seen in the geriatric population, with strikingly similar morbidity and mortality profiles and...Many observers have noted that the morphological changes that occur in chronic kidney disease(CKD) patients resemble those seen in the geriatric population, with strikingly similar morbidity and mortality profiles and rates of frailty in the two groups, and shared characteristics at a pathophysiological level especially in respect to the changes seen in their vascular andimmune systems. However, whilst much has been documented about the shared physical characteristics of aging and uremia, the molecular and cellular similarities between the two have received less attention. In order to bridge this perceived gap we have reviewed published research concerning the common molecular processes seen in aging subjects and CKD patients, with specific attention to altered proteostasis, mitochondrial dysfunction, post-translational protein modification, and senescence and telomere attrition. We have also sought to illustrate how the cell death and survival pathways apoptosis, necroptosis and autophagy are closely interrelated, and how an understanding of these overlapping pathways is helpful in order to appreciate the shared molecular basis behind the pathophysiology of aging and uremia. This analysis revealed many common molecular characteristics and showed similar patterns of cellular dysfunction. We conclude that the accelerated aging seen in patients with CKD is underpinned at the molecular level, and that a greater understanding of these molecular processes might eventually lead to new much needed therapeutic strategies of benefit to patients with renal disease.展开更多
Background: Worldwide, diabetic nephropathy-DN is the leading cause of end-stage kidney disease-ESKD, DN is a common cause of renal failure with a reported frequency of 10% - 15% in type-2-diabetes-mellitus-T2DM patie...Background: Worldwide, diabetic nephropathy-DN is the leading cause of end-stage kidney disease-ESKD, DN is a common cause of renal failure with a reported frequency of 10% - 15% in type-2-diabetes-mellitus-T2DM patients, however there is a great discrepancy between countries. The aim of the pre-sent study is to evaluate the findings of kidney biopsies performed on diabetic patients. Materials and Methods: We studied native kidney histopathological findings in the period from January 2016 till end of December 2018 done for patients with T2DM with chronic kidney diseases-CKD. Results: A total of 82 DM-patients, 50 males (61%) and 32 females (39%) with age mean (95% CI) of 50.8 (47.1 - 55.2) years for all patients, ranged between 15 to 65 years. Histological findings showed that 57.3% of patients had DN. While focal-segmental-glomerulosclerosis-FSGS was present in 20.7%—primary in 8.6% and secondary in 12.1%. IgA represented 4.9%, while Lupus nephritis, Membranous and drug induced interstitial nephritis were each present in 3.7%. MCD was present in 2.4%. Lastly diffuse proliferative GN, ANCA associated glomerulonephritis, and hypertensive nephrosclerosis accounted for 1.2%. Conclusion: The prevalence of NDKD is remarkably frequent in DM patients who underwent kidney biopsy and FSGS was the most frequent diagnosis. To get a proper histopathological diagnosis, an adequate tissue biopsy is needed with an adequate number of glomeruli. There is a great need for more consideration to biopsy diabetic patients, as the finding of NDKD requires a different therapeutic approach. This, hopefully, will help to manage these patients better and therefore, ameliorate the progression to ESKD over time and therefore delay the need for RRT.展开更多
AIM To determine if retinal and foot checks are carried out on patients with diabetes receiving haemodialysis.METHODS Eighty-four patients with diabetes receiving haemodialysis were asked if they recalled having eye a...AIM To determine if retinal and foot checks are carried out on patients with diabetes receiving haemodialysis.METHODS Eighty-four patients with diabetes receiving haemodialysis were asked if they recalled having eye and foot screening in the last year, and if so, by whom was the check done.RESULTS Seventy-seven(91.7%) patients recalled having an eye check in the preceding 12 mo. Of these, 52(67.5%) did so in an ophthalmology clinic, 17(22%) in retinal screening, three(3.9%) in an optician clinic. Three patients(3.9%) went to both ophthalmology and retinal screening, and two (2.6%) attended an ophthalmology and optician. Seventy (83.3%) patients recalled having a foot check in the preceding 12 mo. Of these, 33 (47.1%) were done by practice nurse, 14 (20%) by a diabetes nurse, 11 (15.7%) by a general practitioner, eight (11.4%) by a chiropodist, and four (5.7%) were each checked by renal nurse, diabetes consultant, junior doctor, or unknown person at a foot clinic.CONCLUSION Most patients with diabetes on haemodialysis are able to recall having an eye check in the last year, although 8.3% could not. A significant proportion of patients could not recall having a foot check (16.7%) in the last year. This baseline audit suggests that an improvement in the rate of foot screening is important to achieve in patients with diabetes on haemodialysis in our unit.展开更多
Objectives of present study are a) to compare the planning and delivery aspects of five different techniques, planned by a) forward, inverse planning and electronic tissue compensation methods;and b) to evaluate and v...Objectives of present study are a) to compare the planning and delivery aspects of five different techniques, planned by a) forward, inverse planning and electronic tissue compensation methods;and b) to evaluate and verify the accuracy of the planning system using phantom to estimate the skin dose for target and contraletral breast from five techniques. In-vivo skin dosimetry is planned with TL detectors. Five different radiotherapy techniques for treatment of carcinoma breast were studied using archived computed tomography (CT) scans of 25 breast conserving surgery patients (leftsided whole breast), planned for 50 Gy in 25 fractions. Linear accelerator (Clinac 2300 CD) photon beams were used and thermoluminescent detectors (TLD) [LiF:Mg, Ti] estimated dose on humanoid phantom. Dose coverage (95%) (to PTV) and hot spot (105%) covering volumes did not show differences (p > 0.05) in all 5 plans;Electronic compensator plans are better than others. IP-IMRT plan showed the worst Homogeneity Index (HI) (p < 0.05) and needed more monitor units (MU) (437 ± 84), than other techniques. The mean doses to ipsi-lateral lung, contra-lateral breast (CB) and heart OARs (V20 ipsi.lung, CB, V30 Heart,) are the least with IP-IMRT. IP-IMRT and E-COMP plans resulted in significantly lower mean dose to the superficial skin (Dmean, V40skin, 45skin, 50skin) (p < 0.05). The mean doses estimated by TLDs were comparable or higher in 3D-CRT (D) and 3D-CRT (P) for PTV and CB;less for IP-IMRT and E-COMP compared to TPS. IP-IMRT and E-COMP techniques provide good target coverage, low doses to OARs, the least doses to the skin of PTV and contra-lateral breast and less hot spots;E-COMP showed better homogeneity, fewer MUs, and the least dose in non-target zones.展开更多
AIM:To report 4 cases of Cryptococcus gattii(C.gattii)species complex infection with diverse ophthalmic manifestations,and to review the literature to examine pathobiology of disease,classical ophthalmic presentations...AIM:To report 4 cases of Cryptococcus gattii(C.gattii)species complex infection with diverse ophthalmic manifestations,and to review the literature to examine pathobiology of disease,classical ophthalmic presentations and outcomes,and treatment modalities for this emerging pathogen.METHODS:Cases of C.gattii meningoencephalitis with ophthalmic manifestations were identified via chart review at two institutions in Australia and one institution in the mid-west region of the United States and are reported as a case series.Additionally,a MEDLINE literature review was conducted to identify all reported cases of C.gattii with ophthalmic manifestations from 1990-2020.Cases were reviewed and tabulated,together with our series of patients,in this report.RESULTS:Four cases of C.gattii with ophthalmic manifestations are presented;three from Australia and one from the USA.A literature review identified a total of 331 cases of C.gattii with visual sequelae.The majority of cases occurred in immunocompetent individuals.Blurred vision and diplopia were the most common presenting symptoms,with papilloedema the most common sign,reported in 10%-50%of cases.Visual loss was reported in 10%-53%of cases,as compared to rates of visual loss of 1%-9%in C.neoformans infection.Elevated intracranial pressure,cerebrospinal fluid(CSF)fungal burden,and abnormal neurological exam at presentation correlated with poor visual outcomes.The mainstays of treatment are anti-fungal agents and aggressive management of intracranial hypertension with serial lumbar punctures.CSF diversion procedures should be considered for refractory cases.Acetazolamide and mannitol are associated with high complication rates,and adjuvant corticosteroids have demonstrated higher mortality rates;these treatments should be avoided.CONCLUSION:Permanent visual loss represents a devastating yet potentially preventable sequelae of C.gattii infection.Intracranial hypertension needs to be recognised early and aggressively managed.Referral to an ophthalmologist/neuro-ophthalmologist in all cases of cryptococcal infection independent of visual symptoms at time of diagnosis is recommended.展开更多
文摘BACKGROUND Prophylactic antibiotics have significantly led to a reduction in the risk of postoperative surgical site infections(SSI)in orthopaedic surgery.The aim of using antibiotics for this purpose is to achieve serum and tissue drug levels that exceed,for the duration of the operation,the minimum inhibitory concentration of the likely organisms that are encountered.Prophylactic antibiotics reduce the rate of SSIs in lower limb arthroplasty from between 4%and 8%to between 1%and 3%.Controversy,however,still surrounds the optimal frequency and dosing of antibiotic administration.AIM To evaluate the impact of introduction of a weight-adjusted antibiotic prophylaxis regime,combined with a reduction in the duration of administration of post-operative antibiotics on SSI incidence during the 2 years following primary elective total hip and knee arthroplasty METHODS Following ethical approval,patients undergoing primary total hip arthroplasty(THA)/total knee arthroplasty(TKA)with the old regime(OR)of a preoperative dose[cefazolin 2 g intravenously(IV)],and two subsequent doses(2 h and 8 h),were compared to those after a change to a new regime(NR)of a weight-adjusted preoperative dose(cefazolin 2 g IV for patients<120 kg;cefazolin 3g IV for patients>120 kg)and a post-operative dose at 2 h.The primary outcome in both groups was SSI rates during the 2 years post-operatively.RESULTS A total of n=1273 operations(THA n=534,TKA n=739)were performed in n=1264 patients.There was no statistically significant difference in the rate of deep(OR 0.74%(5/675)vs NR 0.50%(3/598);fishers exact test P=0.72),nor superficial SSIs(OR 2.07%(14/675)vs NR 1.50%(9/598);chi-squared test P=0.44)at 2 years postoperatively.With propensity score weighting and an interrupted time series analysis,there was also no difference in SSI rates between both groups[RR 0.88(95%CI 0.61 to 1.30)P=0.46].CONCLUSION A weight-adjusted regime,with a reduction in number of post-operative doses had no adverse impact on SSI incidence in this population.
基金JMW,RSS,EP,EK,WM,ZBP,and NRMT have received research funding from a precision trauma care research award from the Combat Casualty Care Research Program of the US Army Medical Research and Materiel Command(DM180044).
文摘We read with interest the recent systematic reviewaArtificial intelligence and machine learning for hemorrhagic trauma careoby Peng et al.[1],which evaluated literature on machine learning(ML)in the management of traumatic haemorrhage.We thank the authors for their contribution to the role of ML in trauma.
文摘The advent of biologics and small molecules in inflammatory bowel disease(IBD)has marked a significant turning point in the prognosis of IBD,decreasing the rates of corticosteroid dependence,hospitalizations and improving overall quality of life.The introduction of biosimilars has also increased affordability and enhanced access to these otherwise costly targeted therapies.Biologics do not yet represent a complete panacea:A subset of patients do not respond to first-line anti-tumor necrosis factor(TNF)-alpha agents or may subsequently demonstrate a secondary loss of response.Patients who fail to respond to anti-TNF agents typically have a poorer response rate to second-line biologics.It is uncertain which patient would benefit from a different sequencing of biologics or even a combination of biologic agents.The introduction of newer classes of biologics and small molecules may provide alternative therapeutic targets for patients with refractory disease.This review examines the therapeutic ceiling in current treatment strategies of IBD and the potential paradigm shifts in the future.
文摘Objective:Sudden cardiac death(SCD)and malignant ventricular arrhythmia(VA)are increasingly recognized as important issues for people living with a Fontan circulation,but data are lacking.We sought to characterize the cohort who had sudden cardiac death,most likely related to VA and/or documented VA in the Australia and New Zealand Fontan Registry including risk factors and clinical outcomes.Methods:A retrospective cohort study was performed.Inclusion criteria were documented non-sustained ventricular tachycardia,sustained ventricular tachycardia,ventricular fibrillation,resuscitated cardiac arrest or SCD>30 days post-Fontan completion.Results:Of 1611 patients,20(1.2%)had VA;14(1.0%)had VA without SCD and 6(<1%)had SCD(6%of all deaths recorded in Registry;5 of those had documented VA at the time of arrest and 1 was presumed to be VA-associated).The median age at first VA was 20.5(14–32)years,10(50%)were females,and the median age at Fontan operation was 8(4–17)years.On univariable analysis,hypoplastic left heart syndrome(p=0.03)and older age Fontan operation(p<0.001)were associated with VA.Earlier Fontan era(p<0.003),atriopulmonary Fontan(p<0.001),pre-Fontan atrioventricular valve repair(p=0.013)pre-or post-Fontan atrial arrhythmia(p=0.010)were associated with SCD.Patients with VA had a 3 times higher risk of death or heart transplant(HR 3.27(1.19,8.98),p=0.02).Conclusions:A proportion of people living with a Fontan circulation have malignant VA.Routine VA screening in this cohort is essential.More data are needed to aid risk stratification.
文摘Continuous renal replacement therapy(CRRT)is widely used for treating critically-ill patients in the emergency department in China.Anticoagulant therapy is needed to prevent clotting in the extracorporeal circulation during CRRT.Regional citrate anticoagulation(RCA)has been shown to potentially be safer and more effective,and is now recommended as the preferred anticoagulant method for CRRT.However,there is still a lack of unified standards for RCA management in the world,and there are many problems in using this method in clinical practice.The Emergency Medical Doctor Branch of the Chinese Medical Doctor Association(CMDA)organized a panel of domestic emergency medicine experts and international experts of CRRT to discuss RCA-related issues,including the advantages and disadvantages of RCA in CRRT anticoagulation,the principle of RCA,parameter settings for RCA,monitoring of RCA(mainly metabolic acid-base disorders),and special issues during RCA.Based on the latest available research evidence as well as the paneled experts'clinical experience,considering the generalizability,suitability,and potential resource utilization,while also balancing clinical advantages and disadvantages,a total of 16 guideline recommendations were formed from the experts'consensus.
文摘The management of patients with irreparable rotator cuff tears remains a challenge for orthopaedic surgeons with the final treatment option in many algorithms being either a reverse shoulder arthroplasty or a tendon transfer. The long term results of these procedures are however still widely debated, especially in younger patients. A variety of arthroscopic treatment options have been proposed for patients with an irreparable rotator cuff tear without the presence of arthritis of the glenohumeral joint. These include a simple debridement with or without a biceps tenotomy, partial rotator cuff repair with or without an interval slide, tuberplasty, graft interposition of the rotator cuff, suprascapular nerve ablation, superior capsule reconstruction and insertion of a biodegradable spacer(Inspace) to depress the humeral head. These options should be considered as part of the treatment algorithm in patients with an irreparable rotator cuff and could be used as either as an interim procedure, delaying the need for more invasive surgery in the physiologically young and active, or as potential definitive procedures in the medically unfit.The aim of this review is to highlight and summarise arthroscopic procedures and the results thereof currently utilised in the management of these challenging patients.
文摘The overall incidence of osteochondral defect in the general population is estimated to be 15 to 30 per100000 people.These lesions can become symptomatic causing pain,swelling and decreased function of the knee,and may eventually progress to osteoarthritis.In the young and active population,partial or total knee arthroplasty(TKA)is rarely the treatment of choice due to risk of early failure.Osteochondral allograft transplantation has been demonstrated to be a safe and effective treatment of large osteochondral and chondral defects of the knee in appropriately selected patients.The treatment reduces pain,improves function and is a viable limb salvage procedure for patients,especially young and active patients for whom TKA is not recommended.Either large dowels generated with commercially available equipment or free hand shell allografts can be implanted in more posterior lesions.Current recommendations for fresh allografts stored at4C advise implantation within 21-28 d of procurement for optimum chondrocyte viability,following screening and testing protocols.Higher rates of successful allograft transplantation are observed in younger patients,unipolar lesions,normal or corrected malalignment,and defects that are treated within 12 mo of symptom onset.Patients with bipolar lesions,uncorrectable malalignment,advanced osteoarthritis,and those over40 tend to have less favourable outcomes.
文摘Since the first report of use of endoscopy in children in the 1970 s, there has seen an exponential growthin published experience and innovation in the field. In this review article we focus on modern age therapeutic endoscopy practice, explaining use of traditional as well as new and innovative techniques, for diagnosis and treatment of diseases in the paediatric upper gastrointestinal tract.
文摘A major concern inhibiting some clinicians from embracing peritoneal dialysis(PD) as the preferred first modality of dialysis is the effects of PD solutions on the peritoneal membrane. These anatomical and functional changes predispose to complications like peritonitis,encapsulating peritoneal sclerosis and ultrafiltration failure. In recent years, "biocompatible" and glucosesparing PD regimens have been developed to minimize damage to the peritoneal membrane. Can the use of these more expensive solutions be justified on current evidence? In this review of the literature, we explore how we may individualize the prescription of biocompatible PD fluid.
文摘<strong>Introduction:</strong> Interdialytic weight-gain (IDWG) has been linked to various complications in hemodialysis (HD) patients. <strong>Method:</strong> Prospective clinical-observational study to evaluate the effect of IDWG in HD patients on the rate of hospital admissions over a 12-month period, and the impact of high IDWG on the frequency of IDH. <strong>Results:</strong> Of the 240 patients, those who had IDWG ≥ 4%, 81% had at least one hospital admission due to volume-overload or the need for extra HD-session(s). On the other hand, only 19% of those having IDWG < 4% had been admitted or got extra HD sessions (p < 0.001). Of those who were admitted (over 12 months) due to volume overload;74.1% had IDWG ≥ 4%, while 25.9% had IDWG < 4% (p < 0.001). Regarding IDH, 87% of patients having IDWG ≥ 4% had at least one episode of IDH/week. On the other hand, only 22.5% of those with IDWG < 4% had one episode of IDH/week (p < 0.001). When analyzing those who had at least one IDH episode/week;72.9% of them had IDWG ≥ 4%, while only 27.1% had IDWG < 4% (p < 0.001). <strong>Conclusion:</strong> In HD patients, the frequency of hospital admission due to volume-overload and the need for extra HD-sessions is strongly related to the amount of IDWG (>4% in our patients), the same stands for the frequency of IDH. Thus, control of IDWG in HD patients is of great importance, keeping in mind the importance of the nutrition status of HD patients that may also impact IDWG.
基金Supported by NIHR Biomedical Research UnitRoyal Brompton and Harefield NHS Foundation Trust and Imperial College London
文摘Cardiovascular magnetic resonance is a non-invasive imaging modality which is emerging as important tool for the investigation and management of pediatric cardiovascular disease. In this review we describe the key technical and practical differences between scanning children and adults, and highlight some important considerations that must be taken into account for this patient population. Using case examples commonly seen in clinical practice, we discuss the important clinical applications of cardiovascular magnetic resonance, and briefly highlight key future developments in this field.
基金The Royal Melbourne Hospital Foundation and the Lord Mayor’s Charitable Foundation kindly provided financial support for this study.
文摘Background The coronavirus disease 2019(COVID-19)pandemic has had a profound and prolonged impact on healthcare services and healthcare workers.Aims The Australian COVID-19 Frontline Healthcare Workers Study aimed to investigate the severity and prevalence of mental health issues,as well as the social,workplace and financial disruptions experienced by Australian healthcare workers during the COVID-19 pandemic.Methods A nationwide,voluntary,anonymous,single timepoint,online survey was conducted between 27 August and 23 October 2020.Individuals self-identifying as frontline healthcare workers in secondary or primary care were invited to participate.Participants were recruited through health organisations,professional associations or colleges,universities,government contacts and national media.Demographics,home and work situation,health and psychological well-being data were collected.Results A total of 9518 survey responses were received;of the 9518 participants,7846(82.4%)participants reported complete data.With regard to age,4110(52.4%)participants were younger than 40 years;6344(80.9%)participants were women.Participants were nurses(n=3088,39.4%),doctors(n=2436,31.1%),allied health staff(n=1314,16.7%)or in other roles(n=523,6.7%).In addition,1250(15.9%)participants worked in primary care.Objectively measured mental health symptoms were common:mild to severe anxiety(n=4694,59.8%),moderate to severe burnout(n=5458,70.9%)and mild to severe depression(n=4495,57.3%).Participants were highly resilient(mean(SD)=3.2(0.66)).Predictors for worse outcomes on all scales included female gender;younger age;pre-existing psychiatric condition;experiencing relationship problems;nursing,allied health or other roles;frontline area;being worried about being blamed by colleagues and working with patients with COVID-19.Conclusions The COVID-19 pandemic is associated with significant mental health symptoms in frontline healthcare workers.Crisis preparedness together with policies and practices addressing psychological well-being are needed.
文摘We developed and evaluated a multiplex PCR (m-PCR) for application in routine diagnostic laboratories to detect Campylobacter spp. in stool samples including C. concisus, C. jejuni, and C. coli. When this m-PCR was applied on spiked faecal samples, C. concisus, C. jejuni, and C. coli were specifically identified at 105 cells/gm of faeces. To compare the sensitivity of the m-PCR with conventional culture techniques, the same spiked stool samples were cultured on an antibiotic free Columbia blood agar using the filtration technique. The detection limit of conventional culture method was 105 cells/gm of stool for C. concisus and 106 cells/gm of stool for C. jejuni and C. coli. The m-PCR was applied to test 127 faecal samples from children with gastroenteritis and the results were compared with the conventional bacterial cultures data. By this m-PCR technique, C. jejuni was detected in 7 samples, C. coli in 2 samples, and C. concisus in 7 samples. However, the conventional culture results for these samples were 6 for C. jejuni, 2 for C. coli and only one sample was positive for C. concisus. In total, 19 samples were positive for Campylobacter spp. by m-PCR while only 9 samples were positive for Campylobacter spp. by culture. In conclusion, m-PCR is more sensitive than the culture technique to detect C. concisus and other fastidious campylobacters in faeces.
文摘Current available treatment options for erectile dysfunction (ED) are effective but not without failure and/or side effects. Although the development of phosphodiesterase type 5 (PDE5) inhibitors (i.e. sildenafil, tadalafil and vardenafil) has revolutionized the treatment of ED, these oral medications require on-demand access and are not as effective in treating ED related to diabetic, post-prostatectomy and severe veno-occlusive disease states. Improvement in the treatment of ED is dependent on understanding the regulation of human corporal smooth muscle tone and on the identification of relevant molecular targets. Future ED therapies might consider the application of molecular technologies such as gene therapy. As a potential therapeutic tool, gene therapy might provide an effective and specific means for altering intracavernous pressure "on demand" without affecting resting penile function. However, the safety of gene therapy remains a major hurdle to overcome before being accepted as a mainstream treatment for ED. Gene therapy aims to cure the underlying conditions in ED, including fibrosis. Furthermore, gene therapy might help prolong the efficacy of the PDE5 inhibitors by improving penile nitric oxide bioactivity. It is feasible to apply gene therapy to the penis because of its location and accessibility, low penile circulatory flow in the flaccid state and the presence of endothelial lined (lacunar) spaces. This review provides a brief insight of the current role of gene therapy in the management of ED.
文摘Introduction: Surgical interventions for degenerative spondylolisthesis are varied with comparable claims of success. Fusion based technique is one of the most commonly used surgical interventions in treating this condition. The aim of this meta-analysis is to compare the effectiveness of the Lumbar Interbody Fusion techniques (specifically Posterolateral Interbody approach—PLIF) versus Posterolateral Instrumented Fusion (PLF). The clinical outcomes investigated were: back pain, leg pain, function, Oswestery Disability Index (ODI), Disability Rating Index (DRI), fusion and revision rates if reported. Methods: Combinations of keywords and MeSH terms, where appropriate, were used to search for studies in Medline via Ovid, Embase, Cochrane Library, and Google scholar. The initial search was conducted on 10 August 2016 and updated on 13 June 2017. Eligibility criteria for the studies to be selected for this meta-analysis were: Randomised Controlled Trials (RCTs), cohort and consecutive cases studies that compared at PLIF versus PLF surgical interventions at the lumbar region. Heterogeneity indicators and Forest plot were computed using RevMan 5. Results: Out of the initial hits of 3021, 5 articles were selected as relevant and assessed for risk of bias and then data was extracted and tabulated. These 5 studies reported data from (900 patients’ records, follow up ranges from 6 months to 5 years) undergone one of 2 interventions (PLIF or PLF). The overall effect for ODI and leg pain showed no advantage of any intervention over the other while there was a greater odd ratio of fusion if the operation applied PLIF techniques (Overall Z = 2.86, p = 0.004). Conclusions: There is a need for more high quality clinical trials to compare these two interventions. However, available data indicate that there are comparable results in the main clinical outcomes between PLIF and PLF. PLIF has superior fusion rate which does not seem to affect post-operative pain ratings.
文摘Many observers have noted that the morphological changes that occur in chronic kidney disease(CKD) patients resemble those seen in the geriatric population, with strikingly similar morbidity and mortality profiles and rates of frailty in the two groups, and shared characteristics at a pathophysiological level especially in respect to the changes seen in their vascular andimmune systems. However, whilst much has been documented about the shared physical characteristics of aging and uremia, the molecular and cellular similarities between the two have received less attention. In order to bridge this perceived gap we have reviewed published research concerning the common molecular processes seen in aging subjects and CKD patients, with specific attention to altered proteostasis, mitochondrial dysfunction, post-translational protein modification, and senescence and telomere attrition. We have also sought to illustrate how the cell death and survival pathways apoptosis, necroptosis and autophagy are closely interrelated, and how an understanding of these overlapping pathways is helpful in order to appreciate the shared molecular basis behind the pathophysiology of aging and uremia. This analysis revealed many common molecular characteristics and showed similar patterns of cellular dysfunction. We conclude that the accelerated aging seen in patients with CKD is underpinned at the molecular level, and that a greater understanding of these molecular processes might eventually lead to new much needed therapeutic strategies of benefit to patients with renal disease.
文摘Background: Worldwide, diabetic nephropathy-DN is the leading cause of end-stage kidney disease-ESKD, DN is a common cause of renal failure with a reported frequency of 10% - 15% in type-2-diabetes-mellitus-T2DM patients, however there is a great discrepancy between countries. The aim of the pre-sent study is to evaluate the findings of kidney biopsies performed on diabetic patients. Materials and Methods: We studied native kidney histopathological findings in the period from January 2016 till end of December 2018 done for patients with T2DM with chronic kidney diseases-CKD. Results: A total of 82 DM-patients, 50 males (61%) and 32 females (39%) with age mean (95% CI) of 50.8 (47.1 - 55.2) years for all patients, ranged between 15 to 65 years. Histological findings showed that 57.3% of patients had DN. While focal-segmental-glomerulosclerosis-FSGS was present in 20.7%—primary in 8.6% and secondary in 12.1%. IgA represented 4.9%, while Lupus nephritis, Membranous and drug induced interstitial nephritis were each present in 3.7%. MCD was present in 2.4%. Lastly diffuse proliferative GN, ANCA associated glomerulonephritis, and hypertensive nephrosclerosis accounted for 1.2%. Conclusion: The prevalence of NDKD is remarkably frequent in DM patients who underwent kidney biopsy and FSGS was the most frequent diagnosis. To get a proper histopathological diagnosis, an adequate tissue biopsy is needed with an adequate number of glomeruli. There is a great need for more consideration to biopsy diabetic patients, as the finding of NDKD requires a different therapeutic approach. This, hopefully, will help to manage these patients better and therefore, ameliorate the progression to ESKD over time and therefore delay the need for RRT.
文摘AIM To determine if retinal and foot checks are carried out on patients with diabetes receiving haemodialysis.METHODS Eighty-four patients with diabetes receiving haemodialysis were asked if they recalled having eye and foot screening in the last year, and if so, by whom was the check done.RESULTS Seventy-seven(91.7%) patients recalled having an eye check in the preceding 12 mo. Of these, 52(67.5%) did so in an ophthalmology clinic, 17(22%) in retinal screening, three(3.9%) in an optician clinic. Three patients(3.9%) went to both ophthalmology and retinal screening, and two (2.6%) attended an ophthalmology and optician. Seventy (83.3%) patients recalled having a foot check in the preceding 12 mo. Of these, 33 (47.1%) were done by practice nurse, 14 (20%) by a diabetes nurse, 11 (15.7%) by a general practitioner, eight (11.4%) by a chiropodist, and four (5.7%) were each checked by renal nurse, diabetes consultant, junior doctor, or unknown person at a foot clinic.CONCLUSION Most patients with diabetes on haemodialysis are able to recall having an eye check in the last year, although 8.3% could not. A significant proportion of patients could not recall having a foot check (16.7%) in the last year. This baseline audit suggests that an improvement in the rate of foot screening is important to achieve in patients with diabetes on haemodialysis in our unit.
文摘Objectives of present study are a) to compare the planning and delivery aspects of five different techniques, planned by a) forward, inverse planning and electronic tissue compensation methods;and b) to evaluate and verify the accuracy of the planning system using phantom to estimate the skin dose for target and contraletral breast from five techniques. In-vivo skin dosimetry is planned with TL detectors. Five different radiotherapy techniques for treatment of carcinoma breast were studied using archived computed tomography (CT) scans of 25 breast conserving surgery patients (leftsided whole breast), planned for 50 Gy in 25 fractions. Linear accelerator (Clinac 2300 CD) photon beams were used and thermoluminescent detectors (TLD) [LiF:Mg, Ti] estimated dose on humanoid phantom. Dose coverage (95%) (to PTV) and hot spot (105%) covering volumes did not show differences (p > 0.05) in all 5 plans;Electronic compensator plans are better than others. IP-IMRT plan showed the worst Homogeneity Index (HI) (p < 0.05) and needed more monitor units (MU) (437 ± 84), than other techniques. The mean doses to ipsi-lateral lung, contra-lateral breast (CB) and heart OARs (V20 ipsi.lung, CB, V30 Heart,) are the least with IP-IMRT. IP-IMRT and E-COMP plans resulted in significantly lower mean dose to the superficial skin (Dmean, V40skin, 45skin, 50skin) (p < 0.05). The mean doses estimated by TLDs were comparable or higher in 3D-CRT (D) and 3D-CRT (P) for PTV and CB;less for IP-IMRT and E-COMP compared to TPS. IP-IMRT and E-COMP techniques provide good target coverage, low doses to OARs, the least doses to the skin of PTV and contra-lateral breast and less hot spots;E-COMP showed better homogeneity, fewer MUs, and the least dose in non-target zones.
基金Campbell TG received support from the Hector Maclean Scholarship through the Centre for Eye Research Australia and Department of Surgery,University of Melbourne,Australia。
文摘AIM:To report 4 cases of Cryptococcus gattii(C.gattii)species complex infection with diverse ophthalmic manifestations,and to review the literature to examine pathobiology of disease,classical ophthalmic presentations and outcomes,and treatment modalities for this emerging pathogen.METHODS:Cases of C.gattii meningoencephalitis with ophthalmic manifestations were identified via chart review at two institutions in Australia and one institution in the mid-west region of the United States and are reported as a case series.Additionally,a MEDLINE literature review was conducted to identify all reported cases of C.gattii with ophthalmic manifestations from 1990-2020.Cases were reviewed and tabulated,together with our series of patients,in this report.RESULTS:Four cases of C.gattii with ophthalmic manifestations are presented;three from Australia and one from the USA.A literature review identified a total of 331 cases of C.gattii with visual sequelae.The majority of cases occurred in immunocompetent individuals.Blurred vision and diplopia were the most common presenting symptoms,with papilloedema the most common sign,reported in 10%-50%of cases.Visual loss was reported in 10%-53%of cases,as compared to rates of visual loss of 1%-9%in C.neoformans infection.Elevated intracranial pressure,cerebrospinal fluid(CSF)fungal burden,and abnormal neurological exam at presentation correlated with poor visual outcomes.The mainstays of treatment are anti-fungal agents and aggressive management of intracranial hypertension with serial lumbar punctures.CSF diversion procedures should be considered for refractory cases.Acetazolamide and mannitol are associated with high complication rates,and adjuvant corticosteroids have demonstrated higher mortality rates;these treatments should be avoided.CONCLUSION:Permanent visual loss represents a devastating yet potentially preventable sequelae of C.gattii infection.Intracranial hypertension needs to be recognised early and aggressively managed.Referral to an ophthalmologist/neuro-ophthalmologist in all cases of cryptococcal infection independent of visual symptoms at time of diagnosis is recommended.