Table of Contents
ISRN Cardiology
Volume 2011, Article ID 768097, 4 pages
Research Article

Mitral Leaflet Separation Index in Assessing the Severity of Mitral Stenosis

1Department of Cardiology, Kottayam Medical College, Kerala 686008, India
2Department of Medicine, Kottayam Medical College, Kerala 686008, India

Received 13 February 2011; Accepted 30 March 2011

Academic Editor: S. Arques

Copyright © 2011 Joby K. Thomas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Determining the severity of mitral stenosis (MS) is important for both prognostic and therapeutic reasons. The mitral valve area (MVA) can be measured by planimetry, pressure half-time, continuity equation, and proximal isovelocity surface area methods. In this study, we propose a novel yet simple, independent measure of MS severity–the mitral leaflet separation (MLS) index. This new index could be a useful surrogate measure of the MVA. This index would also help when there is a discrepancy between severities of MS estimated by existing methods, in the presence of atrial fibrillation and in the presence of mitral regurgitation.