Park Kwon-Jae, Woo Jong Soo, Yi Jung Hoon, Park Jong Yoon
Department of Thoracic and Cardiovascular Surgery, Dong-A University Medical Center, Dong-A University College of Medicine, Korea.
Korean J Thorac Cardiovasc Surg. 2013 Apr;46(2):124-9. doi: 10.5090/kjtcs.2013.46.2.124. Epub 2013 Apr 9.
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).
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.
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.
Both QR and CR showed excellent long-term results and were considered equally effective methods for PML prolapse.
二尖瓣后叶（PML）脱垂的二尖瓣修复术因其高成功率和高患者满意度而被视为标准治疗方法。本研究的目的是评估PML脱垂的两种不同技术，四边形切除术（QR）和弦索置换术（CR）的临床效果。
研究对象为1997年11月至2010年12月期间因PML脱垂接受二尖瓣修复术的56例患者。根据手术技术将患者分为两组。其中，31例患者接受了QR（QR组），25例患者接受了CR（CR组）。我们回顾性分析了患者的病历，以比较两组的临床结果。
二尖瓣修复术后，两组二尖瓣反流（MR）程度均降至轻度或更低，CR组残余MR量略高，但无统计学差异。3例患者接受了二尖瓣相关再次手术（QR组2例，CR组1例）。QR组7年无二尖瓣相关再次手术生存率为93%，CR组为96%，两组间无显著差异。
QR和CR均显示出优异的长期效果，被认为是治疗PML脱垂同样有效的方法。
