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Partial Posteromedial Papillary Muscle Rupture Caused by Myocardial Ischemia Only without Myocardial Infarction
Author(s) -
Tsujimoto Masanaga,
Tanaka Hidekazu,
Matsumoto Kensuke,
Inoue Takeshi,
Okita Yutaka,
Hirata Kenichi
Publication year - 2016
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/echo.13223
Subject(s) - medicine , cardiology , papillary muscle , myocardial infarction , stenosis , chest pain , mitral regurgitation , ischemia , circumflex , ejection fraction , scintigraphy , angiography , infarction , artery , heart failure
Mini‐Abstract A 66‐year‐old woman with a history of exertional chest pain was admitted to our hospital. Transthoracic echocardiography displayed an ejection fraction of 71% without regional wall‐motion abnormalities. Transesophageal echocardiography revealed severe mitral regurgitation due to prolapse of P2 scallop with posteromedial papillary muscle (PPM) rupture. Coronary angiography showed 90% stenosis in the left circumflex artery (LCx), and myocardial ischemia without infarction in the lateral wall was observed by means of stress scintigraphy. The surgical inspection and histological finding confirmed diagnosis of P2 scallop prolapse with partial PPM rupture. PPM rupture due to only myocardial ischemia was extremely rare.