Korean J Thorac Cardiovasc Surg.  2013 Apr;46(2):124-129. 10.5090/kjtcs.2013.46.2.124.

Outcomes of Mitral Valve Repair: Quadrangular Resection versus Chordal Replacement

• Park KJ
• Woo JS
• Yi JH
• Park JY

• KMID: 1427806
• DOI: http://doi.org/10.5090/kjtcs.2013.46.2.124

Abstract

BACKGROUND
Mitral valve repair for posterior mitral leaflet (PML) prolapse has been considered to be a standard treatment because of its high success rate and high level of patient satisfaction. The aim of this study was to evaluate the clinical results of two different techniques of PML prolapse, quadrangular resection (QR) and chordal replacement (CR).
MATERIALS AND METHODS
The subjects consisted of 56 patients who had undergone mitral valve repair for PML prolapse between November 1997 and December 2010. The patients were divided into two groups according to surgical technique. Among them, 31 patients underwent QR (group QR) and 25 patients had CR (group CR). We reviewed the medical records of the patients retrospectively to compare the clinical outcomes of both groups.
RESULTS
After mitral valve repair, the degree of mitral regurgitation (MR) in both groups decreased to the to a mild degree or less and the amount of remnant MR was slightly higher in the CR group but it was not statistically different. Three patients received mitral valve-related reoperation (2 in the QR group and 1 in the CR group). Freedom from mitral valve-related reoperation at 7 years was 93% for the QR group and 96% for the CR group and was not significantly different between the two groups.
CONCLUSION
Both QR and CR showed excellent long-term results and were considered equally effective methods for PML prolapse.

Keyword

Mitral valve; Mitral valve prolapse; Chordae tendineae

MeSH Terms

Chordae Tendineae
Freedom
Humans
Medical Records
Mitral Valve
Mitral Valve Insufficiency
Mitral Valve Prolapse
Patient Satisfaction
Prolapse
Reoperation
Retrospective Studies