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原发性慢性肾脏病患者动态血压特点及其与左心室肥厚的关系 被引量:5

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摘要 目的:研究原发性慢性肾脏病( CKD)肾脏替代治疗前患者动态血压特征,分析相关参数尤其是血压变异性与左心室肥厚( LVH)的关系。方法:收集我科住院的非透析原发性CKD患者127例,按其内生肌酐清除率( Ccr)水平分为早期组[CKD1~3期(n=95,Ccr≥30 ml·min-1&·1.73 m^-2)]和晚期组[CKD4~5期(n=32,Ccr﹤30 ml·min^-1·1.73 m^-2)]。无创性便携式动态血压监测仪行动态血压监测( ABPM),超声心动图检测LVH有关指标,分析动态血压相关指标,尤其是血压变异性( BPV)与LVH的关系。结果:(1)与早期组相比,晚期组24 h、昼间、夜间舒张压变异性( mDBPV,dDBPV,nDBPV)和24 h收缩压变异性(mSBPV)均减小(P﹤0.05);高血压和反杓型血压发生率均升高(P均﹤0.05);舒张末期左室内径(LVDd)、室间隔厚度(IVST)、左室后壁厚度(PWT)、左心室质量指数(LVMI)均升高(P均﹤0.05),LVH发生率升高(P﹤0.05)。(2)与非左心室肥厚组( non-LVH组)相比:左心室肥厚组( LVH 组)高血压和反杓型血压发生率升高( P 均﹤0.05);但BPV各指标变化不显著( P均﹥0.05)。(3)与非高血压组( non-H组)相比:高血压组( H-组)LVMI值和LVH发生率均显著升高(P均﹤0.05)。(4)与非反杓型血压组相比,反杓型血压组 LVMI 值及 LVH发生率均显著升高(P均﹤0.05)。(5)单因素相关性分析显示,LVMI与年龄、mSBP、mDBP、dSBP、dDBP、nSBP和nDBP均呈正相关( P均﹤0.05),与Ccr、mDBPV、nDPS和nDPD 均呈负相关( P均﹤0.05);多因素逐步回归分析显示,Ccr和nSBP进入回归方程y=51.772-0.289x1+0.526x2(y=LVMI;51.772=常数,t=3.616,P=0.000;x1=Ccr,t=-5.984,P=0.000;x2=nSBP,t=5.181,P=0.000)。结论:随着肾功能减退,CKD患者高血压发生率升高;血压昼夜节律改变,以反杓型血压为主;血压变异性减小。LVH的发生与CKD患者夜间收缩压升高、血压昼夜节律异常尤其是反杓型血压密切相关,同时也与肾功能减退本身密切相关,但与血压变异性的关系较弱。
出处 《中国中西医结合肾病杂志》 2014年第7期620-623,共4页 Chinese Journal of Integrated Traditional and Western Nephrology
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