COMPARISON OF DOPPLER-DETERMINED ELEVATED PULMONARY ARTERIAL-PRESSURE WITH PRESSURE MEASURED AT CARDIAC-CATHETERIZATION
COMPARISON OF DOPPLER-DETERMINED ELEVATED PULMONARY ARTERIAL-PRESSURE WITH PRESSURE MEASURED AT CARDIAC-CATHETERIZATION
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DOI：
10.1016/0002-9149(86)90627-2
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发表时间：
1986-04-01
影响因子：
2.8
通讯作者：
NISTAL, F
中科院分区：
文献类型：
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作者：
MARTINDURAN, R;LARMAN, M;NISTAL, F
本研究评估使用脉冲多普勒超声心动图测量肺动脉（PA）压力。分析了51例患者的右心室（RV）流出道PA血流。重点关注PA血流形态、RV收缩间期、达峰时间和加速时间指数。PA压力与总肺阻力相关。PA血流的三种形态学模式被发现：I型表示PA压力正常（敏感性85%，特异性100%），II和III型表示PA高血压（敏感性100%，特异性85%）。当应用对数函数时，RV射血前/RV射血比、达峰时间和加速时间指数显示出良好的相关系数改善。达到峰值流量的时间（PA压力r = 0.77，总肺阻力r = -0.79），特别是加速时间指数（PA压力r = -0.84，总肺阻力r = -0.87）的相关性最好。肺血流分析是评估肺动脉压力的一种可靠的新工具，对于评估肺总阻力更是如此。加速时间指数是与这两个变量相关性最好的参数。
This study assesses use of pulsed Doppler echocardiography to measure pulmonary artery (PA) pressure. PA flow at the right ventricular (RV) outflow tract was analyzed in 51 patients. Attention was focused on PA flow morphologic pattern, RV systolic intervals, time to peak flow and acceleration time index. Correlation was made with PA pressure and total pulmonary resistance. Three morphologic patterns of PA flow were found: type I indicates normal PA pressure (sensitivity 85%, specificity 100%) and types II and III indicate PA hypertension (sensitivity 100%, specificity 85%). The RV preejection/RV ejection ratio, time to peak flow and acceleration time index show a good correlation coefficient improved when a logarithmic function was applied. The best correlation was achieved with time to peak flow (r = 0.77 with PA pressure, r = -0.79 with total pulmonary resistance), and especially with acceleration time index (r = -0.84 with PA pressure, r = -0.87 with total pulmonary resistance). Analysis of pulmonary flow is a reliable new tool for evaluating PA pressure and is even better for evaluating total pulmonary resistance. Acceleration time index is the parameter that correlates best with these 2 variables.