右心室乳头肌的一种不寻常起源。

An unusual origin of a papillary muscle of the right ventricle.

机构信息

Tulane University School of Medicine, New Orleans, LA, USA.

Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland.

出版信息

Morphologie. 2023 Mar;107(356):147-150. doi: 10.1016/j.morpho.2022.03.002. Epub 2022 Jul 1.

DOI:10.1016/j.morpho.2022.03.002

PMID:35787342

Abstract

Knowledge of anatomical variations of the heart are important to cardiac surgeons, cardiologists, and radiologist. During routine dissection of a 77-year-old male cadaver, we observed an unusual origin of a papillary muscle of the right ventricle arising from the atrioventricular aspect of the moderator band. This papillary muscle was 6.7mm long and 2.6mm wide. It gave rise to two chordae tendineae: one to the inferior (posterior) papillary muscle of the right ventricle and one directly to the inferior (posterior) leaflet of the tricuspid valve. Variants of the internal anatomy of the heart as exemplified in the present case report should be born in mind during image interpretation and invasive procedures of the right ventricle of the heart.

摘要

心脏解剖变异的知识对心脏外科医生、心脏病学家和放射科医生很重要。在对一名 77 岁男性尸体进行常规解剖时，我们观察到右心室乳头肌的一种不寻常起源，它发自房室结 moderator 带的房室面。该乳头肌长 6.7mm，宽 2.6mm。它发出两条腱索：一条至右心室的下（后）乳头肌，另一条直接至三尖瓣的下（后）瓣叶。在解释心脏图像和进行心脏右心室的有创操作时，应牢记本例所报告的心脏内部解剖的变异。