Baron S B, Comess K A
Department of Internal Medicine, University of Arizona Health Sciences Center, Tucson.
Postgrad Med. 1990 May 1;87(6):85-8, 91-3, 96-8. doi: 10.1080/00325481.1990.11716333.
Doppler echocardiography provides crucial information in the evaluation of a patient with suspected significant heart valve dysfunction. Doppler studies can provide quantitative data on the gradients across the stenotic valves and in many cases derive the actual valve area (with use of the pressure half-time method for stenotic atrioventricular valves or the continuity equation for semilunar valves). When combined with two-dimensional echocardiographic studies, Doppler studies may discern the cause of valve dysfunction. In valvular regurgitation, semi-quantitative estimation of the severity of the problem can be obtained by pulsed Doppler flow mapping or color Doppler echocardiography. These methods show great value for rapid evaluation of valve dysfunction in the emergency setting.
多普勒超声心动图在评估疑似严重心脏瓣膜功能障碍的患者时提供关键信息。多普勒研究可以提供有关狭窄瓣膜两端压力阶差的定量数据，并且在许多情况下可以得出实际的瓣膜面积（对于狭窄的房室瓣使用压力减半时间法，对于半月瓣使用连续性方程）。当与二维超声心动图研究相结合时，多普勒研究可以辨别瓣膜功能障碍的原因。在瓣膜反流中，可以通过脉冲多普勒血流图或彩色多普勒超声心动图对问题的严重程度进行半定量评估。这些方法在急诊情况下对瓣膜功能障碍的快速评估具有很大价值。
