Tribouilloy C, Lesbre J P
Service de cardiologie B, hôpital Sud, Amiens.
Arch Mal Coeur Vaiss. 1990 May;83(6):839-52.
Doppler echocardiography has made decisive advances in the non-invasive quantification of valvular stenosis. The simplified Bernoulli formula gives access to the maximum and mean transvalvular pressure gradients which correlate very well with the gradients measured at catheterisation. In addition, it is possible to calculate valve surface area in aortic and mitral stenosis from the continuity equation providing its conditions of application are respected. The Doppler surface area of mitral stenosis can also be estimated with some reservations by measuring pressure half time. Doppler echocardiography provides a reliable non-invasive hemodynamic study of valvular stenosis and should lead to a reduction in the number of indications of cardiac catheterisation, especially as pulmonary artery pressures can be determined from Doppler recordings of tricuspid and pulmonary regurgitation.
多普勒超声心动图在瓣膜狭窄的无创定量评估方面取得了决定性进展。简化的伯努利公式可用于获取最大和平均跨瓣膜压力梯度，这些梯度与心导管检查测得的梯度相关性非常好。此外，只要遵守其应用条件，就可以根据连续性方程计算主动脉瓣和二尖瓣狭窄时的瓣膜面积。二尖瓣狭窄的多普勒面积也可通过测量压力减半时间进行一些保留性的估计。多普勒超声心动图为瓣膜狭窄提供了可靠的无创血流动力学研究，并且应该会减少心导管检查的适应证数量，特别是因为肺动脉压力可以从三尖瓣和肺动脉反流的多普勒记录中确定。
