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Wen Cheng
Gregory P. Fontana
Sharo Raissi
Carlos Blanche
Robert M. Kass
Kathy E. Magliato
Alfredo Trento
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Right arrow Coronary disease

J Thorac Cardiovasc Surg 2002;124:313-320
© 2002 The American Association for Thoracic Surgery

Surgery for Acquired Cardiovascular Disease (ACD)

Off-pump coronary surgery: Effect on early mortality and stroke

Wen Cheng, MD, Timothy A. Denton, MD, Gregory P. Fontana, MD, Sharo Raissi, MD, Carlos Blanche, MD, Robert M. Kass, MD, Kathy E. Magliato, MD, James Mirocha, MS, Alfredo Trento, MD

From the Division of Cardiothoracic Surgery, Cedars-Sinai Medical Center, Los Angeles, Calif.

Presented at the Seventh Annual Meeting "Cardiothoracic Techniques and Technology" 2001, New Orleans, La, Jan 25, 2001.

Received for publication July 6, 2001. Revisions requested Aug 28, 2001; revisions received Oct 24, 2001. Accepted for publication Dec 10, 2001. Address for reprints: Wen Cheng, MD, Department of Cardiothoracic Surgery, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Suite 6215, Los Angeles, CA 90048 (E-mail: chengw{at}cshs.org).

Background: Avoiding cardiopulmonary bypass in coronary artery bypass grafting is thought to reduce early mortality and morbidity.
Methods: We used our prospective database to compare all patients having off-pump coronary surgery (n = 389) with those having on-pump coronary surgery (n = 2412) between March 15, 1995, and November 1, 2000. Patients were grouped by age (years) in decades (>90, 80-89, 70-79, 60-69, <60 years). The Northern New England risk model was applied. Thirty-two independent variables were entered into a stepwise logistic regression analysis with the end points being surgical mortality and postoperative stroke.
Results: Patients undergoing off-pump operations were older (70.9 ± 12 vs 68.1 ± 11 years; P < .001), and their Northern New England predicted risk was higher (11.9% ± 13% vs 9.2% ± 10%; P < .001). However, patients having on-pump bypass had significantly more bypass grafts constructed (3.3 ± 0.8 vs 1.9 ± 0.8; P < .001) and triple-vessel coronary artery disease (58% vs 28%; P < .001). There were no significant differences in postoperative mortality, stroke rate, complications, and length of stay between the groups. Logistic regression analysis did not show that cardiopulmonary bypass was a risk factor for either surgical mortality (odds ratio, 1.08; P = .83) or stroke (odds ratio, 1.59; P = .27).
Conclusion: Off-pump coronary bypass did not reduce early mortality and morbidity. Early and late results should be compared in a prospective randomized study.




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