心室乳头肌的形态学——综述和荟萃分析。

Morphology of papillary muscles in the ventricles of heart - a review and meta-analysis.

机构信息

Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education and Research, Dhanvantari Nagar, Puducherry, India.

出版信息

Morphologie. 2023 Sep;107(358):100591. doi: 10.1016/j.morpho.2023.01.002. Epub 2023 Jan 31.

DOI:10.1016/j.morpho.2023.01.002

PMID:36732176

Abstract

OBJECTIVE

To review the morphology of papillary muscles in both the ventricles of heart.

METHODS

The articles were collected from databases such as MEDLINE etc. using Google as the search engine. Keywords used were papillary muscle morphology, papillary muscle dimensions, papillary muscle blood supply, papillary muscle histology, papillary muscle development and papillary muscle biomechanical properties. Studies were included if they assessed the aforesaid features of papillary muscles. Thirty-four studies were included in the review. Meta-analysis was done for number of right and left ventricular papillary muscles and dimensions of right ventricular papillary muscles. The data obtained from these studies was synthesized, pooled and all analyses were performed using R Statistical Software (v4.1.2; R Core Team 2021) with R package meta version 5.5-0.

RESULTS

Marked difference existed between papillary muscles of right and left ventricles. In right ventricle, one anterior (76%), one posterior (38%) and one septal (30%) papillary muscle were most common. In left ventricle, one anterior (46%) and two posterior papillary muscles (26%) were most common. In both the ventricles, commonly observed gross appearances of papillary muscles were conical and flat-topped. Papillary muscles were lengthier in left ventricle than right ventricle. Anterior papillary muscle was 1.36cm long, 1.36cm broad and 0.64cm thick in right ventricle. It was the largest in both right and left ventricles.

CONCLUSION

The morphology and measurements of papillary muscles vary significantly. Thorough knowledge of these variations will help surgeons to determine appropriate surgical repair procedures for the valve and subvalvular apparatus.

摘要

目的

回顾心脏左右心室乳头肌的形态。

方法

通过 MEDLINE 等数据库以及谷歌搜索引擎收集文章。使用的关键词是乳头肌形态、乳头肌尺寸、乳头肌血液供应、乳头肌组织学、乳头肌发育和乳头肌生物力学特性。纳入评估乳头肌上述特征的研究。共纳入 34 项研究。对右、左心室乳头肌数量和右心室乳头肌尺寸进行了荟萃分析。对这些研究中获得的数据进行了综合、汇总，并使用 R 统计软件（v4.1.2；R 核心团队 2021 年）和 R 包 meta 版本 5.5-0 进行了所有分析。

结果

左右心室的乳头肌存在明显差异。在右心室，最常见的是一个前（76%）、一个后（38%）和一个室间隔（30%）乳头肌。在左心室，最常见的是一个前（46%）和两个后乳头肌（26%）。在左右心室，乳头肌的常见大体外观为锥形和平顶形。左心室的乳头肌比右心室长。右心室的前乳头肌长 1.36cm，宽 1.36cm，厚 0.64cm。它是右、左心室中最大的乳头肌。