Unusual Case of Acute Posteromedial Papillary Muscle Rupture After Acute Anterior Myocardial Infarction

The Difficult Diagnosis of Ischaemic Papillary Muscle Rupture: Case report from an urban emergency department

“…As in this case, the posteromedial papillary muscle is often affected during a myocardial infarction in the area perfused by the RCA; in comparison, the anterolateral papillary muscle has a dual blood supply and therefore very rarely exhibits ischaemic complications. 1 Thirdly, it is rare for cases of papillary muscle rupture with severe mitral regurgitation to have an uncomplicated postoperative course, as observed with the current patient. This condition usually carries a high mortality rate; Schroeter et al determined a 30-day postoperative mortality rate of 39.3%, while another study reported rates of 4.2% and 25.0% for intraoperative and in-hospital mortality, respectively.…”

Papillary Muscle Rupture Following Non‐ST‐Elevation Myocardial Infarction: A Case Report

“…Case 1 was successfully managed surgically, while surgery was deferred in case 2 due to refractory cardiogenic shock and multi‐organ failure. The first case further highlights the known variability in coronary blood supply of papillary muscles, with the LAD (usually a wrap‐around type 3 vessel) supplying an apically inserted posteromedial papillary muscle …”

“…The first case further highlights the known variability in coronary blood supply of papillary muscles, with the LAD (usually a wrap-around type 3 vessel) supplying an apically inserted posteromedial papillary muscle. [6][7][8] The incidence of PMR following STEMI has declined, while it has increased in the setting of NSTEMI. There are two plausible explanations to this observation.…”

Interventricular Septal Rupture: An Uncommon Complication of an Acute Myocardial Infarction

“…The posterolateral papillary muscle is supplied only by the dominant right coronary artery or left circumflex artery, therefore, it is more often involved. TTE may show a leaflet of the mitral valve during systole into the atrium or the ruptured papillary muscle head with inadequate movements in the ventricle or a mobile mass attached to the chordae tendineae [19,20].…”