Topical anaesthesia for extracorporeal shock wave lithotripsy.
We have investigated 60 patients in a prospective double-blind, placebo-controlled study to assess the efficacy of EMLA (Eutectic Mixture of Local Anaesthetics) cream to provide analgesia during extracorporeal shock wave lithotripsy (ESWL) with a second generation lithotriptor. Before operation, EMLA or placebo cream was applied to the patient's back at the anticipated shock head-skin interface. During the procedure increments of fentanyl 0.5 micrograms kg-1 were given i.v. on patient demand. There was no significant difference (P = 0.83) in the dose of fentanyl given to each group. We cannot recommend, therefore, the use of EMLA cream as an analgesic during ESWL with a second generation lithotriptor.
McDonald
P F
PF
Department of Anaesthetics, Royal Perth Hospital, Western Australia.
Berry
A M
AM
D000772:Anesthesia, Local / Q000379:methods*; D000779:Anesthetics, Local; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D004338:Drug Combinations; D005283:Fentanyl / Q000008:administration & dosage; D006801:Humans; D007669:Kidney Calculi / Q000628:therapy*; D008012:Lidocaine; D000077442:Lidocaine, Prilocaine Drug Combination; D008096:Lithotripsy; D011318:Prilocaine; D011446:Prospective Studies
D000779:Anesthetics, Local; D004338:Drug Combinations; D000077442:Lidocaine, Prilocaine Drug Combination; D011318:Prilocaine; D008012:Lidocaine; D005283:Fentanyl