血清胱抑素C与原发性高血压患者左心室肥厚的相关性

目的探讨合并左心室肥厚(LVH)的原发性高血压患者血清胱抑素(Cys)C水平的变化及其之间的相关性。方法收集该院住院的250例原发性高血压患者,按照Cockcroft-Gault公式计算筛选出肌酐清除率≥80 ml/min的患者206例进行Cys C及其他生化指标的测定;采用彩色多普勒超声技术对所有入选对象进行左室舒张末期内径、左室后壁厚度(LPWT)、室间隔厚度(IVST)的测量,并计算左心室质量指数(LVMI);根据左心室质量指数分为LVH组(n=61),非LVH组(n=145),分别分析CysC水平在两组中的变化,并进一步分析其与高血压患者左室质量指数的关系。结果 LVH组Cys C水平显著高于非LVH组(P0.01);当两组调整年龄、体质指数(BMI)、总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、血肌酐(SCr)危险因素后,经多元回归分析,Csy C与IVST,LPWT及LVMI仍呈正相关。结论 Cys C水平与原发性高血压患者LVH有显著相关性,可作为其预测指标。     

高龄高血压患者动态脉压和血脂与左心室肥厚的关系

目的探讨高龄高血压患者动态脉压(APP)和血脂与左心室肥厚(LVH)的相关性。方法入选年龄≥80岁的高血压患者110例,进行24 h动态血压监测、超声心动图检查及血脂检测。根据APP分为高脉压组(≥60mm Hg,1 mm Hg=0.133 kPa)74例和低脉压组(<60 mm Hg)36例,以左心室重量指数(LVMI)作为LVH的诊断标准,又分为LVH组50例和非LVH组60例。并进行相关分析和logistic回归分析。结果与低脉压组比较,高脉压组LVMI、LVH的发生率及各收缩压参数明显升高(P<0.05)。LVH组24 h收缩压、昼间收缩压、APP、脉压指数明显高于非LVH组(P<0.05),2组舒张压差异无统计学意义(P>0.05)。LVMI与APP、脉压指数、24 h收缩压、昼间收缩压、夜间收缩压呈正相关,与HDL-C呈负相关(P<0.05),与所有舒张压参数均无相关性(P>0.05)。APP是LVH的独立危险因素(OR=1.057,95%CI:1.018～1.096,P=0.003)。结论在高龄高血压患者中,APP与LVMI密切相关,是LVH的独立危险因素;HDL-C与LVMI密切相关。     

血浆脂联素水平与高血压患者左心室收缩功能的关系

目的评估原发性高血压患者左心室收缩功能和血浆脂联素水平的关系。方法入选2015年3月至2015年10月门诊收治的原发性高血压患者203例,根据排除标准最终纳入单纯高血压患者160例。根据左心室质量指数(LVMI)125(男性)或120g/m2(女性),将高血压患者分为无左心室肥厚(LVH)组[LVH(-),n=80]与左心室肥厚组[LVH(+),n=80]。对照组是从医院健康体检人群中抽取,包括年龄、性别和体质量指数(BMI)匹配的正常血压健康自愿者(n=82)。采用二维斑点追踪超声心动图(2D-STE)分别评估各组受试者的左心室收缩功能指标[左心室长轴应力(LVLS)、左心室环向应力(LVCS)和左心室径向应力(LVRS)];应用酶联免疫吸附分析法(ELISA)测定血浆脂联素水平。观察和分析各组受试者血浆脂联素水平的差异及其与左心室收缩功能的关系。结果高血压患者收缩压和舒张压高于对照组,脂联素水平低于对照组(均P0.05);在高血压患者中,LVH患者脂联素水平下降更明显(P0.05)。LVH(+)组左心房内径(LAD)、左心室舒张末期内径(LVEDD)高于对照组和LVH(-)组(均P0.05)。LVH(+)组和LVH(-)组室间隔厚度(IVST)、左心室后壁厚度(LVPWT)、相对室壁厚度(RWT)和左心室质量指数(LVMI)高于对照组,且LVH(+)组高于LVH(-)组(均P0.05)。与对照组相比,LVLS在LVH(-)组患者中明显降低[-(17.9±2.0)%比-(21.4±2.3)%,P0.05],在LVH(+)组患者中,LVLS进一步降低[-(15.3±1.8)%,P0.05]。相关分析显示,LAD、RWT和LVMI与血浆脂联素水平呈负相关(分别:r=-0.339、r=-0.377、r=-0.415;均P0.05)。血浆脂联素水平与LVLS呈正相关(r=0.469,P0.01)。多因素逐步回归分析显示,血浆脂联素水平(β=0.278,P0.05)和LVMI(β=0.468,P0.05)是LVLS的影响因素。结论血浆脂联素水平降低可能与高血压患者左心室纵向收缩功能受损相关联。     

替米沙坦对原发性高血压患者左室肥厚及C反应蛋白的干预作用

目的探讨原发性高血压患者C反应蛋白(CRP)与左室肥厚(LVH)的关系,以及应用血管紧张素受体拮抗剂(ARB)治疗能否降低高血压患者的CRP水平及阻断或逆转LVH的发生.方法 老年高血压患者50例,根据Devereux标准分为LVH 组26例和无LVH 组24例,予以替米沙坦治疗24 w,治疗前后分别测定血压、超敏C反应蛋白(hsCRP),计算左室肥厚指数(LVMI).结果 原发性高血压伴LVH者hsCRP水平较无LVH者高(P＜0.05),hsCRP与LVMI呈正相关(P＜0.05);经替米沙坦治疗后两组患者的hsCRP水平均显著下降(P＜0.01),左室肥厚组LVMI较用药前明显下降(P＜0.01).结论 CRP水平可能是LVH的危险因子,炎症可能是形成LVH的机制之一,ARB类降压药物可通过降低CRP的水平减少LVH的发病风险.     

原发性高血压左心室肥厚与C型利钠肽水平关系的研究

目的:研究原发性高血压患者左心室肥厚(LVH)与C型利钠肽(CNP)水平的关系。方法:用酶联免疫吸附法(ELISA)测定58例原发性高血压无LVH组、50例原发性高血压伴LVH组,及50例血压正常的健康对照组血清CNP浓度,采用多普勒超声心动图检查计算左心室质量指数(LVMI)。结果:原发性高血压伴LVH组CNP水平明显高于无LVH及健康对照组(均P<0.01),原发性高血压无LVH组也高于健康对照组(P<0.01)。CNP浓度与LVMI呈正相关(r=0.64,P<0.01)。结论:CNP水平可以反映高血压及LVH程度。     

原发性高血压左心室肥厚患者左心室应变率与心率震荡的关系

目的 探讨原发性高血压左心室肥厚(LVH)患者左心室应变率与心率震荡的相关性.方法 对入选的241例高血压患者及113例健康对照者行超声心动图检查,以左心室质量指数(LVMI)＞125(男),＞120 g/m2(女)和(或)室间隔厚度＞12 mm为LVH诊断标准,将高血压患者分为无左心室肥厚组(NLVH组,n=120)...     

原发性高血压患者血尿酸水平与左心室肥厚的相关性

目的:探究原发性高血压患者血尿酸水平与左心室肥厚的相关性。方法:收集2012年6月至2013年12月,在安贞医院高血压科诊治的原发性高血压患者581例为研究对象,并行超声心动图测定心脏各腔室内径,计算左心室质量指数(LVMI),根据左心室质量指数(LVMI)≥125g/m~2(男),LVMI≥110g/m~2(女)分为高血压左心室肥厚组和非肥厚组(对照组),分析两组患者基本临床资料,再采用多因素Logistics回归分析的方法,进行UA与LVMI的相关性分析。结果:1.肥厚组与对照组比较,肥厚组尿酸[(453.72±120.63)vs.(349.23±87.39)μmol/L,P=0.00],收缩压[(156.02±22.34)vs.(148.19±22.06)mm Hg,P=0.00)]、(1mm Hg=0.133k Pa)脉压[(52.86±14.08)vs.(47.20±15.52)mm Hg,P=0.00]、LVMI[133.51(124.79,146.26),P=0.00]均高于对照组,差异有统计学意义(P0.05);2两组不同性别的高血压患者的血尿酸水平比较:在肥厚组中,男性血尿酸水平高于女性(t=2.73,P=0.01),在对照组中,男性血尿酸水平也高于女性(t=4.57,P=0.00),差异均有统计学意义(P0.05)。3影响左心室肥厚的多因素Logistic回归分析显示,进一步校正了年龄、性别、高血压病程等心血管危险因素,结果显示血尿酸仍是高血压患者左心室肥厚的独立危险因素(OR=1.03,P=0.00),性别(OR=2.51,P=0.00)和脉压(OR=1.02,P=0.03)也与左心室肥厚密切相关(P0.05)。结论:尿酸与高血压左心室肥厚存在相关性,随着高血压患者的尿酸水平增加,其左心室肥厚显著增加。     

老年高血压患者左心室肥厚与动态脉压及动态脉压指数的关系

目的探讨老年高血压患者左心室肥厚与动态脉压(24h APP)及动态脉压指数(24h APPI)的关系。方法入选我院住院确诊的老年高血压患者191例,入选患者均进行24 h无创动态血压监测,按24hAPP分为低脉压组(24hAPP60 mmHg,n=136)和高脉压组(24hAPP≥60 mmHg,n=55);所有患者均行超声心动图检查,并记录左心室舒张末期内径(LVEDD)、室间隔厚度(IVST)、左心室后壁厚度(LVPWT)的数值,计算左心室质量指数(LVMI)。结果高脉压组24hAPPI、LVMI、24 h收缩压(24hSBP)的水平大于低脉压组;简单线性回归分析提示:年龄、24hAPP、24hAPPI、24hSBP为左心室肥厚的危险因素;多元逐步线性回归分析提示24hAPPI为LVMI的独立危险因素。结论 24hAPPI可能为老年高血压患者左心室肥厚的独立危险因素。     

老年男性血清25羟维生素D水平与左心室肥厚的相关性研究

目的探讨老年男性血清25羟维生素D水平对于心脏左心室肥厚(LVH)的预测意义。方法选取333例老年男性患者,根据是否合并LVH分为非LVH组208例,LVH组125例,2组行超声心动检查,采用ELISA法检测血清25羟维生素D,采用多因素多元逐步回归分析。结果与非LVH组比较,LVH组血清肌酐水平明显升高,差异有统计学意义(P<0.05);血清25羟维生素D明显降低[(35.5±14.8)nmol/L vs(30.7±10.8)nmol/L,P<0.05],左心室重量指数(LVMI)明显增高(P<0.01)。体重指数和25羟维生素D与LVMI独立相关(β=0.216,-0.155,P<0.01)。结论在老年男性患者中,较低的25羟维生素D水平可能是LVH的独立危险因素。     

血清尿酸与高血压左心室肥厚的相关性及性别差异

目的探讨血清尿酸与高血压患者左心室肥厚(LVH)的关系,以及这种关系在男女之间是否存在差异。方法选择福建省级机关医院原发性高血压患者2140例,根据血清尿酸水平四分位数分组,比较4组的左心室质量指数(LVMI)和左心室肥厚(LVH)发生率;按男、女分层,比较男、女尿酸四分位组间LVMI和LVH发生率的差异;采用多因素Logistic回归分析男、女患者尿酸与LVH发生的关系。结果随着尿酸四分位水平递增,女性患者LVMI和LVH发生率逐渐增加[分别为(114.41±34.51),(121.34±36.98),(126.86±42.52),(141.74±46.36)g/m2;35.0%,47.0%,52.1%,61.7%;均P0.05],而男性患者4组间LVMI差异有统计学意义[分别为(144.12±76.44),(132.58±40.39),(134.24±41.00),(141.84±55.02)g/m2;P0.05],LVH发生率差异无统计学意义(57.1%,50.2%,54.3%,52.7%;P0.05)。和女性相比,男性尿酸、LVMI升高,LVH发生率增加(均P0.05)。Logistic回归分析显示,尿酸是女性患者中LVH发生的独立危险因素[OR(95%CI)=1.30(1.13~1.56),P0.01],男性患者中尿酸与LVH的相关性无统计学意义(P0.05)。结论尽管女性高血压患者尿酸及LVH程度较男性低,但女性患者尿酸与LVH相关,而男性患者这种相关性无统计学意义。     

Left atrial conduit function for left ventricular filling dynamics in patients with myocardial infarction

This study observed the left atrial function in determining filling dynamics of the left ventricle in patients with myocardial infarction. The study consisted of eight control subjects and ten patients with myocardial infarction. The left ventricular filling volume is considered to be composed of the left atrial passive emptying, active emptying, and conduit volumes. The change of left ventricular filling volume was correlated with that of conduit volume (r = .87, P < .01). However, the change of left ventricular filling volume did not have any correlation to those of left atrial passive emptying and active emptying volumes. These results suggested that the left atrial conduit function was important in determining filling dynamics of the left ventricle.     

Transesophageal Echocardiographic Examination of Left Subclavian Artery Branches

This preliminary study demonstrates the feasibility of examining the proximal segments of the branches of the left subclavian artery during probe withdrawal toward the end of a routine transesophageal echocardiographic study. The branches identified most commonly were the vertebral and the internal mammary arteries.     

Cross-sectional multiplane transesophageal echocardiographic measurements: comparison with standard transthoracic values obtained in the same setting

BACKGROUND: Several algorithms developed for cost-effective use of transesophageal echocardiography (TEE) propose elimination of "screening" transthoracic echocardiographic (TTE) studies. Cross-sectional measurements obtained by TTE (left atrial diameter [LAD], left ventricular internal dimensions in diastole and systole [LVIDd, LVIDs], septal and posterior wall thickness in diastole [VSTd, PWTd], LV end-diastolic and end-systolic volumes [LVEDV and LVESV], and LV ejection fraction [LVEF]) have not been standardized for TEE. METHODS: Forty-six patients (age 27 to 85 years, 60 +/- 13 years, 25 [54%] women) underwent TEE and TTE studies. TTE was performed while the TEE probe was in place and the patient was still sedated. Standard TTE measurements were compared with corresponding TEE values obtained from mid-esophageal and transgastric views. RESULTS: Standard TTE measurements compared favorably with those obtained by TEE at the mid-esophageal three-chamber view for LAD (3.9 +/- 0.6 cm vs 4.0 +/- 0.7 cm, P = NS) and at the transgastric long-axis view for LVIDd (4.6 +/- 0.8 cm vs 4.7 +/- 0.8 cm, P = NS), LVIDs (3.1 +/- 0.9 cm vs 3.1 +/- 0.9 cm, P = NS), and VSTd (0.95 +/- 0.18 cm vs 0.98 +/- 0.19 cm, P = NS). Biplane TTE and TEE measurements of LVEDV (106 +/- 35 ml vs 112 +/- 38 ml, P = NS), LVESV (37 +/- 23 ml vs 37 +/- 25 ml, P = NS), and LVEF (67 +/- 14% vs 69 +/- 14%, P = NS) also correlated closely. The negative predictive values of TEE measurements for excluding abnormal LAD, LVIDd, VSTd, PWTd, and LVEF as defined by TTE were 83%, 94%, 95%, 97%, and 97%, respectively. CONCLUSION: Cross-sectional TEE measurements as obtained in this study are equivalent to standard TTE dimensions and provide reliable information that may facilitate interpretation of TEE studies in the absence of TTE information.     

Using traditional measurements of the left atrial diameter to predict the left atrial volume index

BACKGROUND: Left atrial enlargement by echocardiography is associated with adverse cardiovascular outcomes, yet the best method for assessing left atrial size has not been established. We sought to correlate the traditional left atrial diameter (LAD) measured in the parasternal view with the recently characterized left atrial volume index (LAVI). METHODS: 100 routine clinical patients who received a transthoracic echocardiogram for customary indications were studied. The LAD and LAVI were measured in each patient. RESULTS: The mean LAVI was 32.8 milliliters per square meter (ml/m(2)) and the LAD was 46.8 millimeters (mm). LAD > 4.7 centimeters (cm) was predictive of LAVI > 32 ml/m(2) (P < 0.001; OR 17.33; 95% CI = 5.96-50.44). CONCLUSION: LAD > 4.7 cm via the traditional method can be used to indicate left atrial enlargement. However, a LAD < or = 4.7 cm does not correlate well with the LAVI, and in such patients, extreme caution should be employed when using the LAD to estimate cardiac prognosis.     

左室质量比值和左室质量指数对高血压左室重构识别的比较

目的 比较左室质量比值(％PLM)和左室质量指数(LVMI)对左室重构识别的价值。方法 对187例高血压患者进行超声心动图检查，测量其心脏结构和功能。结果 左室质量适宜(aLVM)、过高(iLVM)和不足的分布分别占48.1％、48．7％和3．2％。％PLM与左室收缩功能的相关系数高于LVMI与左室收缩功能的相关系数。左室肥厚(LVH)时，iLVM的左室射血分数、左室短轴缩短率低于aLVM(P＜0．01)。但在aLVM或iLVM中．LVH和无LVH两组间的左室收缩功能无明显差异(P＞0．05)。结论 ％PLM识别左室重构比LVMI更符合生理情况，更能精确地对高血压患者进行危险分层。