Anesthesia and analgesia
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Anesthesia and analgesia · Nov 1980
Randomized Controlled Trial Clinical TrialOperating room temperature prior to surgical draping: effect on patient temperature in recovery room.
Assessment was made of whether a cold-room environment prior to surgical draping affected patient temperature or the incidence of shivering in the recovery room in patients undergoing major vascular surgery when warming blankets and warmed fluids were used to maintain intraoperative temperature. Forty-two patients scheduled to undergo major vascular surgery were randomly assigned in equal numbers to a "cold or "warm" room. Temperatures in the "warm" rooms were 22.2 C or above (range 22.8-25.6 C) until draping, and in "cold" rooms, 18.9 C or below (ranged 13.9-17.8 C). ⋯ Patient temperatures initially did not differ between groups. Despite significantly greater heat loss prior to draping in the cold-room group (0.63 +/- 0.14 C) than in the warm-room group (0.32 +/- 0.10 C) (p < 0.01), there were no differences in temperature in the recovery room, shivering, myocardial, renal CNS, pulmonary, or graft morbidity in the two groups. In major intra-abdominal vascular operations the use of warming blankets and the practice of warming all fluids for infusion allow a comfortable room temperature without detriment to patient care.
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Anesthesia and analgesia · Oct 1980
Randomized Controlled Trial Comparative Study Clinical TrialSpinal anesthesia: bupivacaine compared with tetracaine.
A solution of 0.75% bupivacaine (Marcaine) in 8.25% dextrose was compared with a similar solution of tetracaine (Pontocaine), the drug most used for spinal anesthesia in the USA. The study employed a randomized double-blind method and a standardized technique for spinal anesthesia in 435 patients. For perineal and lower extremity surgery, 7.5 mg of the local anesthetic was injected, and for intra-abdominal gynecologic surgery, 12 mg was administered. ⋯ Epinephrine added to the local anesthetic solution significantly increased the duration of action of both drugs. It also prolonged the duration of postoperative analgesia of tetracaine significantly more than the duration of bupivacaine. Bupivacaine 0.75% in 8.25% dextrose is a safe, reliable local anesthetic solution for spinal anesthesia.