概括
右心房压力 (RAP) 和心脏内压力 (IPP) 在早期心脏栓塞中是可比的. 然而,在排水过程中,IPP变得明显低于RAP,影响左心室填充压力的估计.
科学领域:
- 心脏病学 心脏病学
- 生理学 生理学 生理学
- 医学诊断 医学诊断 医学诊断
背景情况:
- 临床心脏坦波纳德评估通常使用心脏内压力 (IPP) 来估计左心室横向填充压力 (TMFP).
- 最近的建议建议右心房压力 (RAP) 可能优于IPP在心周排水期间评估心外压力.
研究的目的:
- 评估IPP和RAP在评估亚急性心脏坦波纳德期间真心周心压的相对优点.
- 分析三种TMFP估计值及其与左心室中风工作和对心周凝集的反应的相关性.
主要方法:
- 测量肺压力 (PWP),RAP和IPP在10名患有亚急性心脏栓塞的患者中.
- 三个TMFP估计的计算:TMFP1 (PWP - IPP),TMFP2 (PWP - 1/3 RAP - 2/3 IPP) 和TMFP3 (PWP - RAP).
- 在坦波纳期间和顺序心周切除后对TMFP的分析,与左心室中风和呼吸变异相关.
主要成果:
- 最初,RAP和IPP是相同的;TMFP的估计是可比的. TMFP1的平均水平为4mm Hg,并显示出显著的吸入性下降.
- 经过心周切开术后,IPP显著下降到RAP以下,但TMFP1显著增加,与左心室中风相关.
- TMFP1和TMFP2与左心室中风相关 (分别r=0.59和0.52),而TMFP3则没有.
结论:
- 心脏吸管可以被诊断为TMFP的平均值高于零,压力的透静平衡可能是一个启发性现象.
- 真心心周压可以在排水过程中降低到RAP以下,这表明在亚急性吸管时心周容量增加.
- TMFP1 (PWP - IPP) 似乎是一个可靠的估计,在心脏吸管和心脏周周切合期间的左心室填充压力.
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