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ORIGINAL ARTICLE

Off-Pump Coronary Artery Bypass Surgery in Severe Left Ventricular Dysfunction

Rasoul Azarfarin, MD, Leili Pourafkari, MD, Rezayat Parvizi, MD, Azin Alizadehasl, MD, Roghaiyeh Mahmoodian, MS

Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran

Azin Alizadehasl, MD, Tel: +98 411 3363880, Fax: +98 411 3344021, Email: alizadeasl{at}yahoo.com, Cardiovascular Research Center, Madani Heart Hospital, Tabriz University of Medical Sciences, Tabriz, Iran.

ABSTRACT

Our aim was to examine hospital outcomes of coronary artery bypass surgery in patients with and without left ventricular dysfunction, with regard to the surgical technique (off- or on-pump). Between March 2007 and March 2008, 689 consecutive patients underwent isolated first-time coronary artery bypass; 127 had ejection fractions ≤30% (group 1) and 562 had ejection fractions >30% (group 2). Data of preoperative risk profiles and hospital outcomes were collected prospectively. Off-pump operations were performed in 49 (38.6%) patients in group 1 and 196 (34.9%) in group 2. The incidences of infectious, neurologic, and cardiac complications postoperatively were significantly higher in group 1. In multivariate analysis, preoperative ejection fraction ≤30% was found to be an independent risk factor for postoperative complications and hospital mortality. The subgroup of patients undergoing off-pump surgery in both groups had a significantly lower rate of total complications than those undergoing conventional on-pump operations, but no significant difference in mortality was observed between those undergoing off-pump or conventional surgery in either group. Off-pump surgery helped to limit the increased morbidity rate after coronary bypass in patients with ventricular dysfunction.

Key Words: Left Ventricular Dysfunction • Coronary Artery Bypass • Off-Pump • Hospital Mortality • Postoperative Complications

Asian Cardiovasc Thorac Ann 2010; 18:44-48
© 2010 by SAGE Publications
DOI: 10.1177/0218492309354126




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