Butorphanol compared with fentanyl in general anaesthesia for ambulatory laparoscopy |
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Authors: | Beverly K Philip David A Scott Dubravka Freiberger Richard R Gibbs Catherine Hunt Ellen Murray |
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Institution: | Department of Anesthesia, Brigham and Women's Hospital, Harvard Medical School, Boston, MA. |
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Abstract: | Butorphanol was compared with fentanyl as the narcotic component of general anaesthesia for ambulatory laparoscopic surgery. This double-blind, randomized study enrolled 60 healthy women who received equianalgesic doses of fentanyl 1 microgram.kg-1 (F, n = 30) or butorphanol 20 micrograms.kg-1 (B, n = 30) prior to induction of anaesthesia. Tracheal anaesthesia was maintained with nitrous oxide/oxygen, isoflurane, and succinylcholine by infusion. Intraoperatively, patients who received B demonstrated lower pulse rate before and after intubation (P less than 0.05, P less than 0.01) and lower diastolic blood pressure after intubation (P less than 0.01). Anesthesiologists judged the maintenance phase as satisfactory more often with B (P less than 0.05). Postoperatively, there were no differences in analgesic need. No major side-effects occurred in either group. Among minor side-effects, patients who received B reported postoperative sedation more often, 77% vs 37% (P less than 0.01), which occurred during the first 45 min of recovery (P less than 0.05). Discharge times were not different. On the first postoperative day, more subjects who received B were satisfied with their anaesthesia experience (P less than 0.05). Butorphanol 20 micrograms.kg-1 is an acceptable alternative analgesic in general anaesthesia for ambulatory laparoscopy. |
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Keywords: | Anaesthesia: outpatient" target="_blank">Anaesthesia: outpatient Analgesics: butorphanol" target="_blank">Analgesics: butorphanol fentanyl |
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