Nishimura Yosuke
   Department   School of Medicine  Cardiovascular Surgery, Clinical Medical Sciences
Article types article
Language English
Peer review Peer reviewed
Title Morphometric study of the human mitral annulus: guide for mitral valve surgery.
Journal Formal name:Asian cardiovascular & thoracic annals
Abbreviation:Asian Cardiovasc Thorac Ann
ISSN code:18165370/02184923
Domestic / ForeginForegin
Volume, Issue, Page 22(7),787-93頁
Author and coauthor Eto Masataka, Morita Shigeki, Nakashima Yutaka, Nishimura Yousuke, Tominaga Ryuji
Publication date 2014/09
Summary BACKGROUND:during mitral valve surgery, it is important for surgeons to understand the anatomy of the mitral valve annulus to prevent surgical complications. This study aimed to perform morphometry of the mitral annulus to facilitate secure suturing during ring annuloplasty or replacement of the mitral valve.METHODS:an anatomical study was carried out on 7 human hearts. We divided the mitral valve annulus into sections containing 8 different points. It was noted that the annulus was a complex structure which has fibrous continuity with the mitral leaflets, and with or without the aortic annulus.RESULTS:there was always a segment of the annular fibrous structure which was facing directly toward the left ventricular cavity. The length of the segment ranged from 1.0 to 3.4 mm. In terms of the size of the annulus, there were large variations within the subject and among the subjects. The shortest distance between the mitral annulus and left circumflex coronary artery was at the anterolateral commissure, and the length was 3.3 mm.CONCLUSION:this study has improved understanding of the anatomy of the mitral annulus, which could help surgeons to avoid operative complications. Based on this study, several suggestions are made for placing sutures for mitral valve replacement and mitral ring annuloplasty.
DOI 10.1177/0218492313513596
PMID 24887907