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脑钠肽对血液透析患者心功能不全的诊断价值

, PP. 892-894

Keywords: 脑钠肽,肾功能衰竭,慢性,血液透析,心力衰竭

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Abstract:

目的评价脑钠肽(bnp)在慢性肾衰竭血液透析患者透析前后血浆浓度的变化及其对心功能不全的诊断价值。方法应用放射免疫分析法检测93例慢性肾衰血液透析患者透析前后血浆bnp水平,并与52例正常人对照。同时应用彩色多普勒超声心动图测定这93例透析患者透析前的左室舒张末内径(lvdd)及左室射血分数(lvef),比较透析患者血浆bnp水平与其心脏功能的关系。结果(1)52例正常对照组的血浆bnp中位数为3.35pg/ml(1.00~9.73pg/ml),93例透析患者透析前后血浆bnp中位数分别为146.5pg/ml(56.2~546.9pg/ml)和90.0pg/ml(18.3~310.5pg/ml),三者之间差异具有显著性(p<0.001)。(2)透析前合并心衰(lvef<50%)患者透析前后血浆bnp分别为686.0pg/ml(334.5~1319.3pg/ml)和248.0pg/ml(80.3~814.5pg/ml),均显著高于心功能正常(lvef≥50%)患者的62.8pg/ml(22.0~321.6pg/ml)和20.7pg/ml(1.0~200.9pg/ml)(p=0.002)。(3)透析前左室增大(lvdd男性≥55mm,女性≥50mm)组患者透析前后血浆bnp分别为609.0pg/ml(254.1~1152.0pg/ml)和310.0pg/ml(28.3~839.6pg/ml),显著大于左室正常组患者的62.8pg/ml(23.2~192.5pg/ml)和22.4pg/ml(1.0~80.7pg/ml)(p<0.001)。(4)对lvdd及lvef与透析前血浆bnp水平的多元逐步回归分析显示,bnp升高与左心室增大、左心功能减低有显著相关性(p<0.01)。结论(1)慢性肾衰血液透析患者血浆bnp水平显著高于正常对照组,血液透析可使血浆bnp显著减低,但仍显著高于正常对照组。(2)慢性肾衰血液透析患者合并左心室增大或左心功能不全者,其血浆bnp水平显著高于左室或左心功能正常者,血浆bnp升高与左心室增大、左心功能减低有显著相关性。

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