aortic orifice

1. Comparison of Allograft Aortic Valve Orifice Area as Estimated by the Gorlin Formula and the Continuity Equation
   连续性方程和Gorlin公式估测人正常主动脉瓣开口面积的比较
2. Peak and mean blood velocity and velocity-time integral ( VTI) of pulmonary valve orifice were measured in parasternal aortic root short axis view. Results: After occlusion, the E velocity and A velocity at tricuspid valve orifice decreased.
   结果：ASD封堵治疗术后三尖瓣口E峰、A峰峰值速度及肺动脉瓣口血流速度、积分和压力阶差显著降低。

noun

1. the orifice from the lower left chamber of the heart to the aorta