Comparison of preoperative and intraoperative assessment of aortic stenosis severity by echocardiography

Conclusions. Intraoperative TOE peak velocities and mean gradients are often significantly lower than preoperative TTE measurements, leading to underestimation of AS severity in nearly half of our study patients. The DI is a more reliable measurement of AS severity in the intraoperative setting.
Source: British Journal of Anaesthesia - Category: Anesthesiology Source Type: research