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Comparison of Sufentanil and Enflurane–Nitrous Oxide Anesthesia for Myocardial Revascularization

Departments of Anesthesiology and Surgery, The University of Alabama Medical Center, Birmingham, Alabama.

Abstract

This study compared the stress response in patients with coronary artery disease undergoing myocardial revascularization anesthetized with either sufentanil and oxygen or enflurane-nitrous oxide and oxygen. Throughout induction and maintenance of anesthesia, and while the patients were in the intensive care unit, hemodynamics plus plasma catecholamine, sufentanil, and enflurane concentrations were recorded and compared. Three groups were studied: sufentanil, 15 µg/kg at induction; sufentanil, 15 µg/kg at induction plus 10 µg/kg on initiation of cardiopulmonary bypass (CPB); and enflurune anesthesia. Hemodynamics were remarkably stable in all groups but required considerable fine tuning when enflurane was administered. The "stress" of CPB was blunted by the additional dose of sufentanil, as well as by enflurane. This was reflected in those patients receiving the extra sufentanil or enflurane by less severe increases in their epinephrine or norepinephrine concentrations and by less frequent use of sodium nitroprusside to control mean arterial pressure compared to the group of patients given the lower-dose sufentanil. This study suggests that higher blood levels of sufentanil can attenuate, but not eliminate, the stress response to CPB, as can enflurane, and that both the narcotic and inhalation anesthetic techniques for patients with coronary artery disease were quite satisfactory.

Key Words: ANESTHETICS, INTRAVENOUS—sufentanil • ANALGESICS—sufentanil • ANESTHESIA—cardiovascular • ANESTHETICS, VOLATILE—enflurane

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Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999