Paradoxic Decrease in Ischemic Mitral Regurgitation With Papillary Muscle Dysfunction | Zendy

Emmanuel Messas | Zendy; Jorge Guerrero | Zendy; Mark D. Handschumacher | Zendy; Chi-Ming Chow | Zendy; Suzanne Sullivan | Zendy; Ehud Schwammenthal | Zendy; Robert A. Levine | Zendy

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Paradoxic Decrease in Ischemic Mitral Regurgitation With Papillary Muscle Dysfunction

Author(s) -

Emmanuel Messas,

Jorge Guerrero,

Mark D. Handschumacher,

Chi-Ming Chow,

Suzanne Sullivan,

Ehud Schwammenthal,

Robert A. Levine

Publication year - 2001

Publication title -

circulation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.795

H-Index - 607

eISSN - 1524-4539

pISSN - 0009-7322

DOI - 10.1161/hc4101.097112

Subject(s) - medicine , cardiology , papillary muscle , mitral regurgitation , functional mitral regurgitation , mitral valve , regurgitation (circulation) , heart failure , ejection fraction

Ischemic mitral regurgitation (MR) was first ascribed to papillary muscle (PM) contractile dysfunction. Current theories include apical leaflet tethering caused by left ventricular (LV) distortion, but PM dysfunction is still postulated and commonly diagnosed. PM contraction, however, parallels apical tethering, suggesting the hypothesis that PM contractile dysfunction can actually diminish MR due to ischemic distortion of the inferior base alone.

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