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Ann Thorac Surg 2001;71:537-542
© 2001 The Society of Thoracic Surgeons
a Department of Cardiothoracic Surgery, Vienna General Hospital, University of Vienna, Vienna, Austria
Accepted for publication May 12, 2000.
Address reprint requests to Dr Grimm, Department of Cardiothoracic Surgery, Vienna General Hospital, Waehringer Guertel 18-20, A-1090 Vienna, Austria
e-mail: michael.grimm{at}akh-wien.ac.at
Background. Coronary artery bypass grafting in patients over 75 years is associated with high operative risk. Target vessel revascularization without cardiopulmonary bypass is a promising option for highly selected, older patients. However, the outcome remains uncertain.
Methods. We investigated 44 patients over 75 years, matched for preoperative risk and left ventricular function, who underwent coronary artery bypass grafting either with or without cardiopulmonary bypass (CPB). We analyzed patients characteristics, Parsonnet score, EuroSCORE, short as well as midterm outcome and quality of life (freedom from recurrence of angina, antianginal therapy, sf36 test).
Results. Perioperative mortality was higher in the patient group operated with CPB (15.9) as compared to patients operated without CPB (4.5%, p = 0.0226). Patients operated with cardiopulmonary bypass received more grafts (3.1 ± 0.1) than patients operated without cardiopulmonary bypass (1.6 ± 0.1, p = 0.0001) and and were more likely to undergo complete revascularization (with CPB 100%, without CPB 63.6%, p = 0.0010). Perioperative complications were more frequent and midterm survival was worse in the patient group operated with CPB (log rank p = 0.0228). Quality of life was comparable in both groups.
Conclusions. The concept of incomplete target vessel revascularization of the culprit lesion seems to be a promising option for selected high-risk patients, predominantly due to lower perioperative mortality.
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