Rudra, ARoy, SRoy, SGupta, KKundu, J P1991-05-012009-05-311991-05-012009-05-311991-05-01Rudra A, Roy S, Roy S, Gupta K, Kundu JP. Postoperative analgesia with extradural buprenorphine and pentazocine. Journal of the Indian Medical Association. 1991 May; 89(5): 123-4http://imsear.searo.who.int/handle/123456789/103087A randomised study of the efficacy, duration of action and side-effects of two analgesic regimens following lower abdominal surgery is described. Patients received extradural pentazocine 30 mg or extradural buprenorphine 0.3 mg to provide postoperative analgesia. Interval for the next analgesia was significantly greater after extradural buprenorphine (18.96 hours) than after extradural pentazocine (8.39 hours) (p less than 0.001). No serious side-effects were reported.engAbdomen --surgeryAdultAgedAnalgesia, EpiduralBuprenorphine --adverse effectsFemaleHumansMaleMiddle AgedPain, Postoperative --drug therapyPentazocine --adverse effectsTime FactorsClinical Trial