Mitral valve surgery for dilated cardiomyopathy with mitral regurgitation

Masashi Toyama, Akihiko Usui, Tomonobu Abe, Hideki Oshima, Toshiaki Akita, Yuichi Ueda

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Outcomes of surgery for non-ischemic non-valvular dilated cardiomyopathy with associated mitral regurgitation were assessed in 8 consecutive patients who underwent 9 mitral valve operations between 2001 and 2004. Mitral valve replacement was performed when the coaptation depth exceeded 10 mm. Two patients initially underwent mitral valvuloplasty, and 6 underwent valve replacement. One patient had valve replacement soon after valvuloplasty. Transthoracic echocardiography was performed immediately before surgery, before discharge, and during follow-up. Transesophageal echocardiography was carried out intraoperatively to assess valvular and ventricular function. Postoperative mean functional class was significantly better than the preoperative value (2.4 ± 0.7 vs. 3.3 ± 0.7), and the improvement was sustained during follow-up (2.0 ± 0.7). The ejection fraction and left ventricular end-diastolic dimension did not improve. One patient died without leaving hospital and two died during follow-up. The 2- and 4-year survival rates were 75.0% and 37.5%. Mitral valve surgery improved functional class without obvious changes in ejection fraction or left ventricular end-diastolic dimension.

Original languageEnglish
Pages (from-to)371-376
Number of pages6
JournalAsian Cardiovascular and Thoracic Annals
Issue number5
Publication statusPublished - 10-2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine


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