How to evaluate the severity of aortic stenosis: discrepancy between valve area and pressure gradient

DOI 37 References

Bibliographic Information

Other Title
  • 大動脈弁狭窄症の重症度評価 ‐弁口面積と圧較差がくい違ったら？‐

Search this article

Description

Management of patients with aortic stenosis (AS) relies on accurate assessment of symptoms, AS severity, and left ventricular ejection fraction (LVEF). AS severity is best described by the measurements of maximum velocity, mean gradient, and valve area. In clinical practice, some patients have an apparent discrepancy in stenosis severity between those defined above. The continuous wave beam parallel to the stenotic jet should be taken using the best of multiple windows to avoid measurement error. Loading conditions influence velocity and pressure gradients; therefore, these parameters vary depending on cardiac output. Hence, no single calculated number should be relied on for final judgment. Evaluation of AS based on data obtained from echocardiography will play a more and more important role in the grading of AS.

Journal

  • Choonpa Igaku

    Choonpa Igaku 40 (5), 473-483, 2013

    The Japan Society of Ultrasonics in Medicine

References(37)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top