{"id":360,"date":"2026-01-07T01:00:07","date_gmt":"2026-01-07T01:00:07","guid":{"rendered":"https:\/\/kishiwada.tokushukai.or.jp\/en\/?page_id=360"},"modified":"2026-04-11T03:56:06","modified_gmt":"2026-04-11T03:56:06","slug":"mitral-regurgitation","status":"publish","type":"page","link":"https:\/\/kishiwada.tokushukai.or.jp\/en\/departments\/cardiovascular-center\/mitral-regurgitation\/","title":{"rendered":"Mitral Regurgitation"},"content":{"rendered":"
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What it is<\/div>\n
Mitral regurgitation (acute or chronic)<\/div>\n<\/p><\/div>\n
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High-risk form<\/div>\n
Acute papillary muscle rupture after myocardial infarction<\/div>\n<\/p><\/div>\n
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Treatment<\/div>\n
Valve repair or replacement, often combined with coronary revascularization<\/div>\n<\/p><\/div>\n<\/p><\/div>\n

\n Mitral regurgitation occurs when the mitral valve does not close properly, allowing blood to leak backward.
\n It may develop suddenly after myocardial infarction due to papillary muscle rupture, or progress over time as a result of papillary muscle dysfunction and left ventricular remodeling.\n <\/p>\n

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What it is<\/h2>\n<\/p><\/div>\n
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\n Mitral regurgitation is broadly classified into acute and chronic forms.
\n Acute mitral regurgitation can occur due to papillary muscle rupture following myocardial infarction and often requires urgent surgical treatment.
\n Chronic mitral regurgitation, particularly in ischemic heart disease, is associated with papillary muscle dysfunction and changes in left ventricular geometry over time.\n <\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Acute papillary muscle rupture<\/h2>\n<\/p><\/div>\n
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\n Acute papillary muscle rupture is a life-threatening complication of myocardial infarction.
\n When the papillary muscle supporting the mitral valve ruptures, severe mitral regurgitation develops abruptly and can lead to rapid hemodynamic collapse.\n <\/p>\n

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