A technique is described to localize the anterolateral papillary muscle and to assess its performance in vivo. Using this technique, we measured sequentially the pressure generated within the anterolateral papillary muscle and its changes in length during the cardiac cycle in eight open-chest anesthetized dogs. Pressure within the anterolateral papillary muscle was measured with a 1.6 mm diamet...

後乳頭筋（PPM）壊死を疑う急性心筋梗塞（AMI）後の左室自由壁破裂（LVFWR）に対し，意図的に外科的修復術を遅延した症例を報告する．症例は胸背部痛を主訴に緊急搬送された67歳女性である．経胸壁心エコー検査（TTE）で心嚢液貯留とPPM頭部の可動性亢進と低輝度所見を認めPPM壊死が疑われた．冠動脈造影検査で回旋枝起始部閉塞を認めた．心臓脱転などの手術操作でのPPM断裂への進展が懸念され，Oozing型で呼吸循環動態破綻がないことからIABP（intra-aortic balloon pumping）管理を含む内科的治療とした．発症から7日目のTTEで心嚢液増加を認め，非縫合術式を行った．術後3日目にIABPを離脱し，12日目に自宅独歩退院となった．

Various structural anomalies of the left ventricular papillary muscles have been observed in recent years. Many of these have been linked to electrocardiographic aberrations. Recently two reports have appeared where the base of the posterior papillary muscle was identified as the source of frequent premature ventricular complexes. In some of these patients these frequent premature ventricular c...

Background: Primary intra cardiac tumors are rare. In this article, we present papillary fibroelastoma of mitral valve chordae. Case Presentation: A 35-year old man presented with atypical chest pain and palpitation. Physical examination and electrocardiogram were normal. Transesophageal echocardiography (TEE) revealed a mass of 1015 mm attached to chordae of anteromedial papillary muscle of ...

BACKGROUND Papillary muscle rupture (PMR) is a rare, but often life-threatening mechanical complication of myocardial infarction (MI). Immediate surgical intervention is considered the optimal and most rational treatment for acute PMR, but carries high risks. At this point it is not entirely clear which patients are at highest risk. In this study we sought to determine in-hospital mortality and...

The left ventricular papillary muscles appear to be the last portions of the heart to be perfused by coronary arterial blood. As a consequence they are sensitive anatomic markers of myocardial ischemia. Foci of necrosis or fibrosis therefore are commonly seen in these structures, particularly the posteromedial papillary muscle, which has a poorer blood supply than does the anterolateral muscle....

The objective of this study was to describe a simple and reproducible papillary-ventricular complex technique for repairing functional mitral regurgitation. To avoid a recurrence of mitral regurgitation subsequent to left ventricular remodelling, we performed papillary muscle plication and papillary muscle and head approximation in combination with relocation of the papillary muscle heads to co...