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Annals of Cardiac Anaesthesia | Volume 21 | Issue 4 | October‐December 2018 464 Dear Editor, This is regarding the article on ischemic mitral regurgitation (MR) by Varma et al.[1] In this article, effective regurgitant orifice area (EROA) ≥0.2 cm2, regurgitant volume (R Vol) ≥30 ml, and regurgitant fraction (RF) ≥50% were considered for the quantification of severe ischemic MR based on 2014 American College of Cardiology/American Heart Association (ACC/AHA) guidelines.[2] In the 2017 focused update on valvular heart disease, the criteria for quantifying primary and secondary MR are the same, i.e., EROA ≥0.4 cm2, R Vol ≥60 ml, and RF ≥50%.[3] What is the rationale for this change?

annals of cardiac anaesthesia/annals of cardiac anaesthesia

Rationale for change in the criteria for defining severe ischemic mitral regurgitation in 2017 American College of Cardiology/American heart association guidelines