A prospective, randomized, double blind, comparative study of intramuscular nalbuphine hydrochloride, butorphanol tartrate and pentazocine lactate for post-operative pain relief following abdominal hysterectomyPraveen P. V. V. S. B., Vijaya Chandra Reddy Konda, Lohit K..
Background: This study aimed to compare the efficacy and safety of intramuscularly administered nalbuphine, butorphanol and pentazocine for post-operative pain relief after abdominal hysterectomy.
Methods: Seventy-five adult female patients, aged between 20-50 years, belonging to American Society of Anaesthesiologists (ASA) class 1 and 2, posted for abdominal hysterectomy under spinal anesthesia were included in the study. The subjects were randomly divided into 3 groups (n=25 each) and given – Group A: pentazocine lactate (30 mg, 1mL), Group B: butorphanol tartarate (2 mg, 1 ml) and Group C: nalbuphine hydrochloride (10 mg, 1 mL) when post-operative pain intensity reached â‰¥4 mm on the Visual analogue scale (VAS). The onset, duration, time to peak effect and adverse events were recorded at regular intervals for 24 hours, postoperatively.
Results: The mean time to onset of anesthesia was significantly faster (P
Analgesia, Butorphanol, Nalbuphine, Pentazocine, Surgery