Ventricular reconstruction results in improved left ventricular function and amelioration of mitral insufficiency

Aditya K. Kaza, Mayank R. Patel, Steven M. Fiser, Stewart M. Long, John A. Kern, Curtis G. Tribble, Irving L. Kron

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Introduction: Surgical restoration of the left ventricular wall (Dor procedure) has been advocated as a therapy for left ventricular dysfunction due to ischemic cardiomyopathy. This procedure involves placement of an endoventricular patch through a ventriculotomy. Methods: We reviewed our series of patients that underwent the Dor procedure within the past 4 years and examined their pre and postoperative ventricular function and mitral valve function. Pre and postoperative ejection fraction and degree of mitral regurgitation were analyzed using the paired Student t-test. We hypothesized that this procedure would result in improved ventricular function and that it would also help improve mitral valve function. Results: Thirty-four patients underwent this procedure, with one death. Of these, 30 patients underwent concomitant coronary artery bypass grafting and 8 patients had mitral intervention (seven had an Alfieri repair of the mitral valve, and one had mitral valve annuloplasty). The average preoperative ejection fraction among these patients was 26.8% (range 10-45%). The post-operative ejection fraction was significantly higher at 35.4% (range 25-52%) (P < .001). We noted an improvement in ejection fraction in 27 patients (82%). We also noted that 21 of 33 patients (64%) had improvement in the degree of mitral regurgitation based on echocardiography data (P < .001). Conclusions: We conclude that the Dor procedure results in improvement in the left ventricular function. Furthermore, we also note that this procedure ameliorates mitral regurgitation in a majority of these patients even in the absence of associated mitral valve procedures, probably due to reduction in the size of the ventricle and improved orientation of the papillary muscles.

Original languageEnglish (US)
Pages (from-to)828-832
Number of pages5
JournalAnnals of surgery
Issue number6
StatePublished - 2002

ASJC Scopus subject areas

  • Surgery


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