Lighty G W, Gargiulo A, Kronzon I, Politzer F
Circulation. 1986 Nov;74(5):1002-6. doi: 10.1161/01.cir.74.5.1002.
Forty adult patients underwent Doppler and two-dimensional echocardiographic examination of the pulmonary artery from multiple views to determine the variability in the magnitude of Doppler-determined flow velocity and pulmonary arterial diameter from various echocardiographic windows. Flows were recorded from two or more views in 32 patients (80%). Twelve of these patients (38%) had flow velocities recorded from two or more views that were within 6% of each other. Twenty of these patients (62%) had view-dependent differences in measured flow velocity ranging from 7% to 48%. The commonly used parasternal short-axis view yielded the highest pulmonary arterial flow velocity in only 35% of the patients studied. Determinations of pulmonary arterial blood flow can vary markedly when measured from different sites, and this is presumably due to varying ability to approximate a zero-degree Doppler angle from different views. Measurement of pulmonary arterial flow velocity should be attempted from multiple views, and the highest flow velocity should be selected as that obtained with the best zero-degree Doppler angle approximation.
40名成年患者接受了肺动脉的多普勒和二维超声心动图检查，从多个视角进行，以确定不同超声心动图窗口下多普勒测定的流速大小和肺动脉直径的变异性。32名患者（80%）的血流记录来自两个或更多视角。其中12名患者（38%）从两个或更多视角记录的流速彼此相差在6%以内。其中20名患者（62%）测量的流速存在视角依赖性差异，范围为7%至48%。在仅35%的研究患者中，常用的胸骨旁短轴视图产生了最高的肺动脉流速。从不同部位测量时，肺动脉血流的测定可能会有显著差异，这可能是由于从不同视角接近零多普勒角度的能力不同。应尝试从多个视角测量肺动脉流速，并选择通过最佳零多普勒角度近似获得的最高流速。
