二尖瓣反流分级
参数 | 中度二尖瓣反流 | 严重MR |
|---|---|---|
缩流颈* | 3-7毫米 | >7mm |
有效瓣口面积 | 0.20〜0.40厘米2 | >0.40厘米2 |
反流容积 | 30～60毫升 | > 60毫升 |
返流分数 | 30–50% | > 50% |
*异常瓣膜下的血流最细直径，比瓣膜解剖直径稍小。 | ||
MR＝二尖瓣反流 | ||
Data from Otto CM, Nishimura RA, Bonow RO, et al: 2020 ACC/AHA Guideline for the Management of Patients With Valvular Heart Disease: Executive Summary: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines.Circulation 143(5):e35–e71, 2021.doi: 10.1161/CIR.0000000000000932 | ||
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