The need for multiple transducer positions, especially from right parasternal windows, is consistently mentioned in the recommendations for the accurate measurement of peak velocities across a stenotic aortic valve, but yet poorly adopted.

We performed a subanalysis of the largest prospective series on the right parasternal acoustic windows in patients with aortic stenosis (330 consecutive) to calculate the degree of misalignment and estimate the potential outcome implication of this often-forgotten approach.

The right parasternal view was highly feasible with an average estimated misalignment from the apical view of 14 ± 16 degree; in 10 cases, an estimated misalignment >40 degree. Right parasternal assessment (vs. apical alone) provided a significant reclassification from moderate to severe or even very-severe aortic valve stenosis. Considering a wellestablished survival benefit provided by either percutaneous or surgical valve replacement in patients with severe aortic stenosis the reclassification would result in approximately 1 life-year saved for every 30–35 patients in whom parasternal view were effectively utilized.

为了准确测量狭窄主动脉瓣的峰值速度，在建议中始终提到需要多个换能器位置，尤其是从右胸骨旁窗口取多个传感器的位置，但采用率却很低。

我们对主动脉瓣狭窄患者（连续330次）的右胸骨旁声窗进行了最大的前瞻性分析，以计算错位的程度并评估这种经常被遗忘的方法的潜在结果。

正确的胸骨旁观是高度可行的，根尖观中的平均估计错位为14±16度。在10例中，估计错位> 40度。正确的胸骨旁评估（相对于顶端）对主动脉瓣狭窄从中度到重度甚至非常重度进行了重大分类。考虑到经皮瓣膜置换术或手术瓣膜置换术对重度主动脉瓣狭窄患者提供了公认的生存益处，因此，重新分类将为每位有效利用胸骨旁视点的30-35名患者挽救大约1个生命年。