ABSTRACT
OBJECTIVE: To evaluate alfentanil, sufentanil, and the combination of both opioids in patients undergoing cardiac surgery. DESIGN: Prospective, randomized study. SETTING: University hospital. PARTICIPANTS: Patients undergoing coronary artery bypass graft (CABG) surgery (n = 195), randomly assigned to 3 groups of 65 each. INTERVENTIONS: Patients in group A received alfentanil, induction (15 microg/kg) and maintenance (15 microg/kg/hr); patients in group S received sufentanil, induction (1 microg/kg) and maintenance (1 microg/kg/h); and patients in group AS received alfentanil and sufentanil, induction with alfentanil (15 microg/kg) and maintenance with sufentanil (1 microg/kg/hr). MEASUREMENTS AND MAIN RESULTS: Hemodynamic data showed a reduction of all parameters at induction in the 3 groups (p < 0.05). Cardiac index decreased at induction in all groups (p < 0.05) but increased in groups S and AS toward baseline values at the end of surgery. The intubation time and length of stay in the intensive care unit were less in group AS (2.3 +/- 1.2 hours; p < 0.001 and 20 +/- 8 hours; p < 0.05), than in groups A (4.2 +/- 1.7 hours and 28 +/- 13 hours) and S (3.1 +/- 1.1 hours; p < 0.05 and 26 +/- 12 hours). Length of hospital stay and patients' outcome were similar in the 3 groups. CONCLUSION: Although the differences among groups regarding extubation time, intensive care unit length of stay, and some hemodynamic data were statistically significant, the differences were clinically small. All 3 anesthetic protocols were shown to be safe and appropriate for patients undergoing elective coronary artery bypass graft surgery and early postoperative tracheal extubation.
