REAL-TIME THREE-DIMENSIONAL ECHOCARDIOGRAPHY FOR QUANTIFYING LEFT VENTRICULAR MASS

To test the accuracy of real-time three-dimensional echocardiography (RT3DE) imaging system for evaluating left ventricular mass (LVM) in phantom and excised canine heart. Methods Ten left ventricular (LV) wall phantoms made of two rubber-bursas, ten excised canine hearts underwent RT3DE and two-dimensional echocardiography (2DE). In RT3DE "full volume" imaging, the myocardial volume was mea-sured using 2,4,8, and 16-plane method with the analysis software of RT3DE. Mass was then calculated by multiplying the resulting myocardial volume by specific density of myocardial tissue. In 2DE the masses were measured by area-length meth-od. The true LV wall phantom mass was measured by water displacement and the canine LVM was weighed by anatomy, which served as a reference standard. We compared RT3DE or 2DE with true mass. Results In LV wall phantoms, RT3DE correlated with true masses strongly (r = 0.813-0.994) and weakly correlated between 2DE and true masses (r = 0.628). In excised canine hearts, there is an excellent correlation between RT3DE and true masses (r = 0.764-0.991), while 2DE value showed a lesser correlation (r = 0.514). There are no difference between RT-3DE and true masses (P > 0.05) but different between 2DE and true masses (P < 0.05). In different planes, there was no difference between 8-plane and 16-plane (P > 0.05) but different between 8-plane and 2, 4-plane (P < 0.05). Conclusion RT3DE can accurately quantify LVM and provide a new tool to evaluate LV function. For LVM by RT3DE, 8-plane measurement method is the best choice for accuracy and convenience.

Combined Effects of Blood Pressure and Aldosterone on Cardiac Left Ventricular Mass Index—Ethnic Differences between Kazakh, Uygur and Han Subjects

Previous Background: Hemodynamic factors, like blood pressure, have been established to be major determinants of cardiac left ventricular structure. However, several factors other than blood pressure to influence cardiac mass have been implicated. When we did medical survey, cardiac left ventricular mass index (LVMI) of one ethnic group that had higher blood pressure was found to be smaller than that of the other ethnic groups with a lower blood pressure. Such contradicted data from the present study were analyzed combining blood pressure, LVMI and chemical parameters obtained from blood and urine. Methods: In a medical survey conducted in Xinjiang, China, 279 people (65 - 70 years old) from three ethnic groups (Kazakh, Uygur and Han) from two separated regions provided blood and urine samples and underwent echocardiography and 24-h ambulatory blood pressure monitoring (ABPM). Results: Systolic and diastolic blood pressure obtained from ABPM and urinary sodium excretion values were significantly higher in Kazakh than that in Uygur and Han. However, LVMI in Kazakh was lower than that in other 2 groups. Plasma aldosterone concentration (PAC) and plasma renin activity (PRA) were significantly lowest in Kazakh. The values of LVMI in all ethnic groups were positively related to both blood pressure and PAC. An inverse correlation was identified between PAC and urinary sodium excretion value. Conclusion: Although higher blood pressure in Kazakh subjects, their LVMI was lower than those of Uygur and Han, whose blood pressure was lower than that in Kazakh. These results suggest that blood pressure is not always a determinant for LVMI value. There is a possibility that relatively lower PAC resulted from higher sodium intake suppressed the rise in LVMI caused by higher blood pressure in Kazakh.

Study on the Effect of Simvastatin on Left Ventricular Mass and Endothelial Function and the Relationship between Their Changes in the Patients with Essential Hypertension

Objective:To study the effect of Simvastatin on the left ventricular mass and endothelial function and to investigate the relationship between their changes in the patients with essential hypertension(EH). Methods: 50 patients with hypertension without severe complication were divided into two groups in a randomized,controlled and single blind trial.Group I(n=25)were given Simvastatin and hydragogue for 12 weeks while Group Ⅱ were given hydragogue during the same time.We detected the left ventricular mass and the brachial artery dilatation induced by reactive hyperemia(DIRH)or nitroglycerin(DING)respectively with ultrasonography in all patients before and after treatment.25 normal subjects without any treatment were taken as the control. Results:The left ventricular mass index(LVMI)was higher in the two groups of patients[(133.61±31.02)g/m 2;(118.04±39.62)g/m 2]than that in the control(88.79±22.73)g/m 2 before treatment(P<0.01,0.000 1,respectively)while the blood pressure was higher.The DIRH was lower in the two groups of patients(5.93±2.24)%;(6.54±3.16)%than that in the control(13.09±2.99)%,P<0.000 1.There was no significantly differences in age,serum concentrations of total cholesterol,triglyceride,sugar,blood pressure or the DING between two groups of patients and the control(P>0.05).And there was no significant difference in the all variables between group Ⅰ and group Ⅱ before treatment.After treatment the LVMI decreased[(133.61±31.02)g/m 2 VS(91.07±16.01)g/m 2,P<0.01]and the DTRH increased[(5.93±2.24)% VS(13.53±2.38)%,P<0.01]in the patients of group Ⅰ while there was no significant change in LVMI and DIRH in the patients of group Ⅱ.The blood pressure in the two groups of patients was decreased to the normal.Compared with group Ⅱ,the changes of LVMI and DIRH was higher in patients of group Ⅰ though the serum concentrations of total cholesterol,triglyceride or sugar were not significantly different.No significant change in serum concentrations oftotal cholesterol,triglyceride or sugar was found during treatment in the two groups of patients.Analysis showed that the LVMI correlated with DIRH and the change of LVMI correlated better with the change of DIRH(r=-0.56;0.69,P<0.000 1,respectly). Conclusions: The increase of left ventricular mass was related with endothelial dysfunction in essential hypertension.Being independent of the changes of serum concentrations of total cholesterol,triglyceride or sugar and blood pressure,Simvastatin could inhibit the increase of left ventricular mass and improve endothelial function.

Hepcidin-25 negatively predicts left ventricular mass index in chronic kidney disease patients

AIM： To assess the correlation between the serum hep-cidin-25 level and left ventricular mass index.METHODS： This study was a cross-sectional study conducted between March 2009 and April 2010. Demo-graphic and biochemical data, including the serum hep-cidin-25 level, were collected for chronic kidney disease （CKD） patients. Two-dimensional echocardiography was performed to determine the left ventricle mass （LVM）, left ventricular mass index （LVMI）, interventricular septum thickness （IVSd）, left ventricle posterior wall thickness （LVPW）, right ventricular dimension （RVD）, left atrium （LA） and ejection fraction （EF）.RESULTS： A total of 146 patients with stage 1 to 5 CKD were enrolled. Serum hepcidin-25 levels were 16.51 ± 5.2, 17.59 ± 5.32, 17.38 ± 6.47, 19.98 ± 4.98 and 22.03 ± 4.8 ng/mL for stage 1 to 5 CKD patients, respectively. Hepcidin-25 level was independently pre-dicted by the serum ferritin level （β = 0.6, P = 0.002） and the estimated glomerular fltration rate （β = -0.48, P = 0.04）. There were negative correlations between the serum hepcidin level and the LVM and LVMI （ P = 0.04 and P = 0.005, respectively）. Systolic blood pressure （BP） was positively correlated with the LVMI （ P = 0.005）. In the multivariate analysis, a decreased serum hepci-din-25 level was independently associated with a higher LVMI （β = -0.28, 95%CI： -0.48 - -0.02, P = 0.006） after adjusting for body mass index, age and systolic BP.CONCLUSION： A lower serum hepcidin level is associ-ated with a higher LVMI in CKD patients. Low hepcidin levels may be independently correlated with unfavor-able cardiovascular outcomes in this population.

Is hepatic steatosis associated with left ventricular mass index increase in the general population?

AIM To investigate the association between hepatic steatosis and change in left ventricular mass index(LVMI) over five years, and examine whether systolic and diastolic blood pressures are mediators of the association between hepatic steatosis and LVMI using a general population sample.METHODS We analyzed data from the Study of Health in Pomerania. The study population comprised 1298individuals aged 45 to 81 years. Hepatic steatosis was defined as the presence of a hyperechogenic pattern of the liver together with elevated serum alanine transferase levels. Left ventricular mass was determined echocardiographically and indexed to height2.7. Path analyses were conducted to differentiate direct and indirect paths from hepatic steatosis to LVMI encompassing systolic and diastolic blood pressure as potential mediating variables.RESULTS Hepatic steatosis was a significant predictor for all measured echocardiographic characteristics at baseline. Path analyses revealed that the association of hepatic steatosis with LVMI change after five years was negligibly small(β =-0.12, s.e. = 0.21, P = 0.55). Systolic blood pressure at baseline was inversely associated with LVMI change(β =-0.09, s.e. = 0.03, P < 0.01), while no association between diastolic blood pressure at baseline and LVMI change was evident(β = 0.03, s.e. = 0.05, P = 0.56). The effect of the indirect path from hepatic steatosis to LVMI via systolic baseline blood pressure was small(β =-0.20, s.e. = 0.10, P = 0.07). No indirect effect was observed for the path via diastolic baseline blood pressure(β = 0.03, s.e. = 0.06, P = 0.60). Similar associations were observed in the subgroup of individuals not receiving beta-blockers, calcium channel blockers, or drugs acting on the reninangiotensin system.CONCLUSION Baseline associations between hepatic steatosis and LVMI do not extend to associations with LVMI change after five years. More studies are needed to study the longitudinal effects of hepatic steatosis on LVMI.

The Influence of Ethnicity in the Relationship between Sedentary Screen Time and Left Ventricular Mass: Insights from the MAG-SALVAGES

Background: The influence of race/ethnicity on the relationship between sedentary screen time and left ventricular mass has been recently suggested, but remains a subject of debate, and has never been explored in Africa. Purpose: To determine whether there is a racial/ethnic influence on the relationship between sedentary screen time and left ventricular mass in MAGhreb and Sub Saharan Africa Left-Ventricul ArGEometry Study (MAG-SALVAGES) participants. Methods: 100 blacks sub-Saharan African and 187 white Maghreb aged 18 - 55 years underwent an interview on their behavioral measures, physical activity and eating habits. Their left ventricular mass has also been measured by a resting transthoracic echography according to the American Society of Echography. Generalized linear models evaluated a test-for-trend across higher levels of sedentary screen time in progressive models with left ventricular measurements as dependent variables. The study population was stratified into quartiles of sedentary screen time (separately for whites and blacks) and examined the joint association of sedentary screen time and LVM within quartiles of physical activity. Results: Among White Maghreb, higher screen time was associated with smaller left ventricular mass (P Conclusions: Sedentary screen time is associated with smaller left ventricular mass in White Maghreb, not in black sub-Saharan African. The lack of association in blacks supports a potential qualitative difference in the cardiovascular consequences of sedentary screen based behavior.

Effects of Weight Loss on Pericardial Fat and Left Ventricular Mass Assessed with Cardiac Magnetic Resonance Imaging in Morbid Obesity

Background: Obesity is a risk factor for cardiovascular disease and mortality. Significant weight loss has beneficial effects on left ventricular structure, in particular on regression of left ventricular hypertrophy (LVH). We therefore evaluated the consequences of significant weight loss on left ventricular morphology, hemodynamics and pericardial fat. Methods: We performed volumetric cardiac magnetic resonance (CMR) imaging before and after significant weight loss due to laparoscopic adjustable gastric banding (LAGB). CMR was used to measure cardiac mass, volume and function, as well as to quantify pericardial fat. Results: Eleven patients (age 40.5 ± 10 yrs, body mass index 42.5 ± 3.9 kg/m2) underwent CMR imaging before and a median 15.4 months after gastric banding. The BMI declined by 9.3 ± 3.3 kg/m2 (p Discussion: Significant weight loss in obesity is accompanied by a marked regression of LVH, with no apparent change in cardiac volume or function. The local effect of a diminished amount of pericardiac fat tissue may be more important than absolute weight loss with respect to the regression of LVH in obesity.

Comparative Proteomic Analysis in Left Ventricular Remodeling following Myocardial Infarction in Rats

Objective Left ventricular remodeling （LVR） following myocardial infarction （MI） is a key pathophysiological process in which MI develops into heart failure. The exact mechanism of LVR remains unclear. We performed differential proteomic analysis on the myocardia of rats with LVR after MI, to explore the mechanism of ventricular remodeling after MI. Methods In the LVR group （n=12）, after the anterior descending coronary artery was ligated, the rats were fed for four weeks before the LVR models were established. Rats in the sham-operated group （n=11） underwent thread-drawing without ligation. The hemodynamic parameters, pathological findings, and proteomics were compared between the two groups. Results In the LVR group, the left ventricular end-diastolic pressure increased, the maximal left ventricular pressure increase/decrease ratio decreased significantly, and the left ventricular systolic pressure decreased. H-E staining and Masson staining of cardiac muscle tissues of the LVR group showed myocytolysis, disarray, and collagen proliferation. Twenty-one differentially expressed proteins were detected by proteomic analysis. We validated two proteins using western blot analysis. The differentially expressed proteins could be divided into six categories： energy metabolism-related proteins, cytoskeletal proteins, protein synthesis-related proteins, channel proteins, anti-oxidation- related proteins, and immune-related proteins. Conclusion These differentially expressed proteins might play key roles in LVR following M

Left Ventricular Measurements in Black Sub-Saharan Africans and White Maghreb

Background: Evidence that blacks have greater left ventricular mass (LVM) than whites has been demonstrated by large population-based American studies. However, to our knowledge, there is no study to date comparing LVM in Black Sub-Saharan Africans (BSSA) and the Maghreb white population. We compared LVM measured echocardiographically in asymptomatic BSSA and Maghreb. Methods and Results: A total of 100 asymptomatic BSSA and 189 Maghreb, (18 to 55 years old), underwent resting two-dimensional transthoracic echocardiography. LVM and geometry were assessed according to the 2015 American Society of Echocardiography and the European Association of Cardiovascular Imaging updated guidelines for cardiac chamber quantification. Crude or indexed LVM to body surface area or height2.7 was similar in BSSA and in Maghreb (132.7 ± 37.0 vs. 134.2 ± 35.7 g;73.1 ± 17.8 vs. 72.9 ± 16.2 g/m2;32.1 ± 9.8 vs. 33.6 ± 9.5 g/m2.7). However, the left ventricular posterior wall was thicker in BSSA. Patterns of left ventricular geometry (normal, concentric remodeling, or concentric or eccentric hypertrophy) were equally distributed among the two ethnic groups. Conclusions: Left ventricular posterior wall thickness but not LVM is greater in BSSA than in Maghreb.

Correlation between IL-33/sST2 signaling pathway and patients with essential hypertensive left ventricular hypertrophy

Objective:To detect the levels of interleukin-33(IL-33)and soluble ST2(sST2)in peripheral blood of patients with essential hypertensive left ventricular hypertrophy,and to discusstheir correlation with patients with essential hypertensive left ventricular hypertrophy was further discussed.Methods:A total of 220 patients with essential hypertension treated in the Department of Cardiovascular Medicine of the First Affiliated Hospital of Bengbu Medical College were enrolled as the experimental group.According to left ventricular mass index(LVMI),patients with essential hypertension were divided into the non-left ventricular hypertrophy group(NLVH,n=108 cases)and the left ventricular hypertrophy group(LVH,n=112 cases).We used ELISA to detect the serum levels of IL-33 and sST2,the expression levels of IL-33 in peripheral blood lymphocytes of the NLVH group and the LVH group(60 cases each)were detected by Western blot,and the relationship between IL-33 and LVMI,a marker of left ventricular hypertrophic condition,was analyzed by Pearson.The relationship between IL-33,sST2 and left ventricular hypertrophy in essential hypertension was studied.Results:Compared with the NLVH group,the expression levels of IL-33 and sST2 in the LVH group were significantly increased.The results of Western blot showed that the expression level of IL-33 in the LVH group(1.07±0.08)was higher than that in the NLVH group(0.63±0.05)(P<0.05).Pearson correlation analysis showed that IL-33 was positively correlated with LVMI,sST2 was positively correlated with LVMI.Conclusion:The levels of IL-33 and sST2 in serum and the expression levels of IL-33 protein in peripheral blood lymphocytes are significantly increased in patients with hypertensive left ventricular hypertrophy,and the occurrence and development of essential hypertensive left ventricular hypertrophy may be related to IL-33 and sST2.

Contribution of Ambulatory Pulsed Pressure in the Modification of the Left Ventricular Geometry of the African Black People

Introduction-Purpose: Pulsed pressure is recognized as an important predictor of cardiovascular risk. The purpose of this study was to identify a possible association between high ambulatory pulsed pressure and left ventricular geometry change in African black people. Material and methods: We conducted a bicentric, retrospective descriptive and analytical study that took place from 2010 to 2015 at the Abidjan Heart Institute and the Polyclinic Sainte Anne Marie in Abidjan. The people were selected from MAPA’s archive files. Those aged 18 years and over were included, all of whom had valid echocardiography and MAPA. The analyzed parameters concerned epidemiological data with age, gender and body surface area. The clinical data analyzed included systolic, diastolic, mean and 24-hours pulsed pressures. On the echocardiographic parameters, it was the evaluation of the ventricular mass indexed to the body surface. Results: A total of 177 patients records were selected. The mean age of the patients was 56.32 ± 10.51 years. There was a male predominance with a sex ratio of 1.15. The main cardiovascular risk factors found outside high blood pressure were dyslipidemia (06.87%) and obesity (13.7%). In clinical terms, hypertension was found in 75% of cases (n = 133) versus 25% (n = 44) of normotensive patients. These blood pressure profiles allowed us to classify our study population into two groups: hypertensives people and normotensives people. The hypertensives people had significantly higher mean pulsed pressure levels than the normotensives people. All normotensive patients had normal pulsed pressure. In the hypertensive population, the prevalence of high pulsed pressure was 31% (n = 41) versus 69% (n = 92) normal pulsed pressure. Concerning the relationship between 24 hour ambulatory pulsed pressure and left ventricular mass, hypertensives patients with a high ambulatory pulsed pressure had a significantly higher average indexed ventricular mass than the opposite groups (p = 0.039). Their ejection fraction was significantly lower than those of the opposite populations (p = 0.000). On the analysis of the correlation between the left ventricular mass and the tension profile, we noted in our series, a strong and significant correlation (r = 0.6342;p = 0.0000) between pulsed pressure and the ventricular geometry change. Conclusion: High ambulatory pulsed pressure remains an independent factor of change in left ventricular geometry in black people.

CHF患者血红蛋白水平差异与血清BNP、TNF-α、sICAM-1的关系以及对MWS和LVMI的影响

目的研究慢性心力衰竭(CHF)患者血红蛋白水平与血浆B型钠尿肽(BNP)、血清肿瘤坏死因子-α(TNF-α)、可溶性细胞间黏附分子-1(sICAM-1)的关系及对左心室质量指数(LVMI)和平均室壁应力(MWS)、心功能的影响。方法对入选的121例CHF患者测定了血红蛋白浓度、血浆BNP、血清TNF-α和sICAM-1水平,超声心动图测量左室射血分数(LVEF),评价心功能;计算LVMI和MWS;按血红蛋白水平分为CHF贫血组和非贫血组,同时选择27例正常人作为对照组。结果CHF患者Hb水平和LVEF低于正常对照组,而血浆BNP、血清TNF-α和sICAM-1水平以及MWS和LVMI高于对照组(P<0.01);随着心功能恶化,Hb水平和LVEF则逐渐降低,而血浆BNP、血清TNF-α和sICAM-1水平以及MWS和LVMI逐渐升高;CHF贫血组患者血浆BNP、血清TNF-α和sICAM-1水平以及MWS和LVMI均升高,明显高于非贫血组患者P<0.01);随着贫血程度的加重,CHF患者血浆BNP、血清TNF-α和sICAM-1水平以及MWS和LVMI进一步升高(P<0.01);CHF患者MWS和LVMI与Hb水平、血浆BNP、TNF-α和sICAM-1水平均呈正相关(P<0.01)。结论CHF患者Hb水平的降低和TNF-α和sICAM-1水平的升高参与了心功能不全心室重构发生发展的病理生理过程,而CHF患者贫血的出现使心功能不全心室重构程度加重化。

慢性心力衰竭患者血清sST2水平与BNP及LVMI的相关性研究

目的观察慢性心力衰竭患者外周血血清可溶性ST2(sST2)水平的变化,探讨sST2对心功能的评价作用及其在心力衰竭中的诊断价值。方法选择心内科住院患者70例,将其中慢性心力衰竭患者55例作为观察组,心脏神经官能症或心律失常患者15例作为对照组。检测并比较2组血清sST2、脑钠肽(BNP)水平及左室质量指数(LVMI),并分析其相关性。结果观察组血清sST2、BNP水平及LVMI均高于对照组,差异有统计学意义(P<0.01)。心功能级别越高,血清sST2、BNP水平及LVMI也越高。心力衰竭患者血清sST2与BNP、LVMI均具有良好的正相关性。结论 sST2可作为心力衰竭的标志物,且与心力衰竭的严重程度相关。

加味黄连温胆汤治疗H型高血压痰瘀互结证患者临床疗效及对LVMI的影响

[目的]观察加味黄连温胆汤对H型痰瘀互结证高血压患者的临床疗效以及对该类患者左心室质量指数的影响。[方法]将入选的70例符合诊断标准的H型高血压患者随机分成对照组(西药常规治疗)35例和治疗组(常规治疗结合加味黄连温胆汤)35例,两组患者的治疗周期均为8周。观察治疗前后症状改善程度、血压水平、血同型半胱氨酸(Hcy)、血脂以及左心室质量指数(LVMI)的变化。[结果]治疗组中医证候疗效总有效率为94.29%,对照组为71.43%,治疗组高于对照组(P<0.05);血压疗效方面,治疗组有效率为94.3%,对照组为77.1%,治疗组优于对照组(P<0.05);治疗后两组患者三酰甘油、总胆固醇、低密度脂蛋白胆固醇都降低,高密度脂蛋白胆固醇水平都增加(P<0.01),且治疗组效果更显著(P<0.05);在LVMI方面,治疗组与对照组均较治疗前有所下降(P<0.01),但治疗组下降更明显(P<0.05);血Hcy水平治疗组优与对照组(P<0.05)。治疗过程中,两组患者均未出现不良反应。[结论]与单纯西药治疗相比,联合加味黄连温胆汤能够改善H型高血压痰瘀互结证患者的临床症状并降低其LVMI,且安全性良好。

骨化三醇治疗对老年慢性心力衰竭患者血清NT-proBNP、MMP-9及心肌细胞凋亡、血管内皮功能和LVMI的影响

目的探讨骨化三醇治疗对老年慢性心力衰竭(CHF)患者血清NT-proBNP、MMP-9及心肌细胞凋亡、血管内皮功能和左心室质量指数(LVMI)的影响。方法将2019年8月至2021年12月于该院就诊的86例老年CHF患者纳入研究,采用随机数字ge法分为常规组和骨化三醇组,每组43例。常规组给予常规治疗,骨化三醇组在常规治疗基础上给予骨化三醇治疗,持续治疗6个月。观察两组治疗前后血清N-末端脑钠肽前体(NT-proBNP)、基质金属蛋白酶-9(MMP-9)、LVMI、心肌细胞凋亡指标[细胞凋亡抑制因子(Fas/APO-1)、可溶性Fas(sFas)、可溶性Fas配体(sFasL)]、血管内皮功能[血清内皮素(ET-1)、血管内皮生长因子(VEGF)、血浆一氧化氮(NO)、肱动脉内皮依赖性舒张功能(FMD)]变化及用药的安全性。结果治疗后,骨化三醇组NT-proBNP、MMP-9水平及LVMI均低于常规组P<0.05),Fas/APO-1、sFas、sFasL水平也均低于常规组(P<0.05)。两组NEGF、NO、FMD水平均较同组治疗前不同程度升高(P<0.05),ET-1较治疗前降低(P<0.05),骨化三醇组各指标水平均优于常规组,差异有统计学意义(P<0.05)。两组心血管事件及药物不良反应发生率比较,差异无统计学意义(P>0.05)。结论骨化三醇治疗能够降低老年CHF患者血清NT-proBNP、MMP-9水平及LVMI,抑制心肌细胞凋亡,改善血管内皮功能,对保护患者心功能具有临床研究价值。

老年冠心病患者UA、LVMI、ABI、baPWV的变化及其与冠脉病变的相关性

目的探讨老年冠心病患者尿酸(UA)、左心室重量指数(LVMI)、踝臂指数(ABI)、肱踝脉搏波传导速度(baPWV)的变化及其与冠脉病变的相关性。方法选择吴川市人民医院2020年2月至2021年2月收治的75例老年冠心病患者作为观察组,并选择同期于该院体检的70例健康老年人作为对照组。比较两组受检者的UA、LVMI、ABI、baPWV,同时比较不同冠状动脉狭窄程度(Gensini)积分患者的UA、LVMI、ABI、baPWV,并采用Pearson相关分析法分析UA、LVMI、ABI、baPWV水平与Gensini积分的相关性。结果观察组患者的UA、LVMI、ABI、baPWV分别为(428.49±63.01)μmol/L、(123.28±14.63)g/m^(2)、1.18±0.26、(1762.11±200.30)cm/s,明显高于对照组的(330.15±40.70)μmol/L、(102.45±11.29)g/m^(2)、0.87±0.15、(1250.30±120.74)cm/s,差异均有统计学意义(P<0.05);Gensini积分≥30患者的UA、LVMI、ABI、baPWV分别为(446.37±70.12)μmol/L、(130.28±18.24)g/m^(2)、(1.80±0.40)、(1700.06±184.08)cm/s,明显高于Gensini积分<30患者的(390.09±33.25)μmol/L、(112.30±15.49)g/m^(2)、1.02±0.11、(1622.30±100.20)cm/s,差异均有统计学意义(P<0.05);经Pearson相关分析结果显示,UA、LVMI、ABI、baPWV与Gensini积分均呈正相关(r=0.547、0.650、0.326、0.805,P<0.05)。结论老年冠心病UA、LVMI、ABI、baPWV与冠脉病变密切相关,对其检测有助于病情的评估和指导临床治疗。

老年原发性醛固酮增多症高血压患者的脑钠肽前体水平及与LVMI和激活醛固酮水平的相关性

目的分析原发性醛固酮增多症引起老年高血压患者N末端B型脑钠肽前体(N terminal pro_B_type natriuretic peptide,NT_proBNP)水平及与左心室质量指数(left ventricular mass index,LVMI)和激活醛固酮水平的相关性。方法将98例老年高血压患者作为研究对象,其中46例原发性醛固酮增多症为观察组,52例原发性高血压为对照组,分析两组NT_proBNP、LVMI水平及其与激活醛固酮水平的相关性。结果观察组log NT_proBNP水平(1.95±0.37)g/m2高于对照组(1.71±0.38)g/m2(P<0.05),LVMI水平(117.95±17.36)g/m^2亦高于对照组(105.96±15.97)g/m2(P<0.05),且其左心室肥厚比例(67.39%)亦高于对照组(51.92%)(P<0.05)。多元线性逐步回归分析显示,观察组NT_proBNP水平与LVMI和激活醛固酮水平密切相关,而对照组NT_proBNP水平与患者收缩压水平密切相关。结论原发性醛固酮增多症容易引起高血压老年患者NT_proBNP水平上升,且NT_proBNP水平与LVMI和激活醛固酮水平密切相关。

稳定性冠状动脉疾病合并高血压患者的LVMI与冠脉病变程度的相关性

目的探讨稳定性冠状动脉疾病合并高血压患者的左心室重量指数(LVMI)与冠脉病变程度的相关性。方法回顾性分析2020年9月至2021年10月咸阳市第一人民医院收治的84例稳定性冠状动脉疾病合并高血压患者的临床资料。所有患者入院后均行心脏超声检查,按照LVMI将所有患者分为A组(LVMI≥115.71 g/m^(2))41例和B组(LVMI<115.71 g/m^(2))43例;同时将所有患者按照冠脉Gensini积分分为高分组(得分>40分)21例、中分组(得分20~40分)48例、低分组(得分<20分)15例。比较A组和B组患者的冠脉病变支数、总胆固醇(TC)、空腹血糖(FPG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、甘油三酯(TG)、血清肌酐(Scr)、血清B型脑钠肽(BNP)水平和冠脉Gensini积分差异;比较不同冠脉Gensini积分患者的LVMI水平;采用Pearson相关性分析法分析冠脉Gensini积分与生化指标的相关性;采用多元线性回归法分析影响冠脉Gensini积分的相关因素。结果A组和B组患者的TC、FPG、LDL-C、HDL-C水平比较差异均无统计学意义(P>0.05);A组患者的TG、Scr、BNP水平分别为(1.72±0.36)mmol/L、(79.43±16.21)μmol/L、(421.57±105.34)pg/mL,明显高于B组的(1.41±0.29)mmol/L、(74.23±14.71)μmol/L、(313.29±95.45)pg/mL,差异均具有统计学意义(P<0.05);A组患者的冠脉Gensini积分为(38.41±12.32)分,明显高于B组的(21.18±7.21)分,差异有统计学意义(P<0.05);A组患者1支冠脉病变发生的比例明显低于B组,3支冠脉病变发生的比例明显高于B组,差异均具有统计学意义(P<0.05);三组不同冠脉Gensini积分组患者间的LVMI水平比较,冠脉Gensini积分高分组患者的LVMI明显高于中分组及低分组,中分组患者的LVMI明显高于低分组,差异均有统计学意义(P<0.05);经多元线性回归分析结果显示,LVMI、SBP、TG、BNP、Scr是冠脉Gensini积分增高的相关危险因素(P<0.05)。结论稳定性冠状动脉疾病合并高血压患者的LVMI升高与冠脉的病变程度密切相关。

高血压病患者MAP、LVMI、PTH、血小板〔Ca^(2+)〕i的相关性分析

测定了20例原发性高血压(EH)患者及15例正常人的平均动脉压(MAP)、左室重量指数(LVMI)、甲状旁腺激素(PTH—M)及血小板胞浆游离钙([Ca^(2+)]i),并测定了EH患者上述参数的相关系数。结果表明EH上述多数显著高于正常人,MAP、LVMI和血小板[Ca(2-)]i与PTH呈正相关。提示 PTH在钙与高血压关系中起重要作用。

慢性肾脏病非透析患者瘦组织质量/脂肪组织质量比值与左心室肥厚的关系

目的:探讨瘦组织质量(lean tissue mass,LTM)/脂肪组织质量(adipose tissue mass,ATM)比值对慢性肾脏病(chronic kidney disease,CKD)非透析患者左心室肥厚(left ventricular hypertrophy,LVH)的影响。方法:纳入CKD非透析患者417例,根据左心室重量指数(left ventricular mass index,LVMI)分为左心室正常组(Non-LVH组)240例、左心室肥厚组(LVH组)177例。收集基线资料及实验室指标等参数,同时收集超声心动图及生物电阻抗检测结果,比较两组之间的基线数据及LTM/ATM比值等数据。采用多因素Logistic回归分析CKD非透析患者LVH的危险因素。绘制受试者工作特征(receiver operating characteristic,ROC)曲线评价LTM/ATM对LVH的预测价值。结果:LVH组高血压患病率、年龄、女性比例、收缩压显著高于Non-LVH组,BMI、血红蛋白、血白蛋白、估算的肾小球滤过率(estimated Glomerular Filtration Rate,eGFR)显著低于Non-LVH组,差异均有统计学意义。LVH组LTM、瘦组织指数、LTM/ATM比值低于Non-LVH组,两组之间容量负荷差异无统计学意义。多因素Logistic回归分析显示年龄、BMI、收缩压、血红蛋白、LTM/ATM比值+性别均为CKD非透析患者LVH的独立危险因素。LTM/ATM比值+性别联合血红蛋白预测LVH的ROC曲线下面积为0.769。结论:低LTM/ATM比值为CKD非透析患者LVH的危险因素,该比值预测此类患者LVH的发生具有一定价值。