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Comparative Study
Journal Article
Surgical anterior ventricular endocardial restoration (SAVER) for dilated ischemic cardiomyopathy.
Seminars in Thoracic and Cardiovascular Surgery 2001 October
Anterior infarction changes ventricular shape and volume. Akinesia is most commonly observed after early reperfusion. Dyskinesia develops in the absence of reperfusion. Both produce heart failure by dysfunction of the remote muscle. Traditional surgery deals with dyskinesia. This study evaluates surgical anterior ventricular endocardial restoration (SAVER), an operation that excludes the apical and septal scar in both akinesia and dyskinesia. A new international group of cardiologists and surgeons from 13 centers, the RESTORE Group) investigated SAVER in ischemic cardiomyopathy following anterior infarction. From January 1998 to July 2000, 662 patients underwent surgery. Early and 3-year outcomes were investigated. Concomitant procedures included coronary artery bypass grafting (CABG) in 92%, mitral repair in 22%, and mitral replacement in 3%. Hospital mortality was 7.7%. Mortality among 606 patients with SAVER and CABG alone was 4.9%. It was 8.1% among 147 patients who underwent concomitant mitral valve repair. Few patients required IABPs (8.4%), LVADs (0.4%), or ECMO (0.6%). Postoperatively, ejection fraction increased from 29.7% +/- 11.3% to 40.0% +/- 12.3% and left ventricular end systolic volume decreased from 96 +/- 63 to 62 +/- 39 mL/m(2) (P <. 05). At 3 years, the survival rate was 89.4% +/- 1.3%. Survival was lower among those with preoperative volume >80 mL/m(2) compared with volume < or = 80 mL/m(2) (83.5% +/- 3.3% v 94.5% +/- 2.0%). Freedom from readmission to hospital for heart failure was at 88.7% at 3 years and was not related to preoperative volume. SAVER is a safe and effective procedure for treating the remodeled dilated anterior ventricle following anterior myocardial infarction.
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