张长东,肖书娜,尚小珂,卢蓉,王利军,田军,董念国,柳梅,刘义华,李飞,陈澍,孙永丰,李庚

• 1:武汉亚洲心脏病医院心外科
• 2:湖北省妇幼保健院ICU
• 3:华中科技大学同济医学院附属协和医院心脏大血管外科
• 4:武汉市第一医院ICU

摘要(Abstract)：

目的探讨肺动脉高压患者的压力-容积相关参数与不同纽约心脏病协会(NYHA)心功能分级间的相关性。方法纳入2015年4月至2016年6月于武汉亚洲心脏病医院就诊的肺动脉高压患者36例,通过股静脉入径右心导管记录右心房压力曲线、右心室压力曲线、肺动脉压力曲线及不同部位血氧饱和度,同期行心脏磁共振成像(MRI)检查获得单个心动周期下的右心室容积,并使用Mass软件测量连续的右心室容积,再进一步获得右心室压力-容积环参数的计算结果。根据NYHA心功能分级进行分组,即NYHA心功能Ⅰ级(Ⅰ组,5例),NYHA心功能Ⅱ级(Ⅱ组,23例),NYHA心功能Ⅲ级(Ⅲ组,8例)。分析各组患者各参数与NYHA心功能分级之间的相关性及组间差异。结果Ⅱ组患者右心室舒张末期压力(RVEDP)[(9.61±4.31)mmHg比(7.40±3.36)mmHg,P=0.03]和右心室收缩末期压力(RVESP)[(91.37±29.62)mmHg比(45.38±28.01)mmHg,P=0.006]、Ⅲ组患者RVEDP[(13.75±7.44)mmHg比(7.40±3.36)mmHg,P=0.03]和RVESP[(93.45±30.56)mmHg比(45.38±28.01)mmHg,P=0.006]均显著高于Ⅰ组,差异均有统计学意义。Spearman相关性分析显示,NYHA心功能Ⅰ级、Ⅱ级、Ⅲ级患者间右心室收缩末期容积(RVESV)(R=0.375,P=0.02)、RVEDP(R=0.377,P=0.03)和RVESP(R=0.378,P=0.02)呈正相关,而右心室舒张末期容积(RVEDV)(R=–0358,P=0.02)呈负相关,差异均具有统计学意义。将患者分为NYHA心功能Ⅰ级比Ⅱ级+Ⅲ级进行分析显示,RVESP(R=0.493,P=0.008)和右心室动脉有效弹性(RVEa)(R=0.345,P=0.02)呈正相关;分为Ⅰ级+Ⅱ级比Ⅲ级进行分析时,RVEDV(R=0.383,P=0.02)、RVESV(R=0.398,P=0.02)和RVEDP(R=0.360,P=0.03)呈正相关,差异均有统计学意义。ROC曲线分析发现,当患者分为NYHAⅠ级和Ⅱ+Ⅲ级两组、预测结局为NYHAⅡ/Ⅲ级时,RVEa灵敏度为0.871,特异度为0.800时,ROC曲线下面积为0.836,P=0.02;RVESP灵敏度为0.903,特异度为0.800时,ROC曲线下面积为0.892,P=0.006,。结论右心室压力-容积参数可能是判断肺动脉高压患者临床心功能状态的更为客观的指标,可作为量化心功能分级的参考选择,对于慢性进展性但又症状偏轻患者的心功能评价具有潜在价值,值得临床医师更多的关注和研究。

关键词(KeyWords)： 肺动脉高压;右心室;NYHA心功能分级;压力-容积关系

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张长东,肖书娜,尚小珂,卢蓉,王利军,田军,董念国,柳梅,刘义华,李飞,陈澍,孙永丰,李庚

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