الفهرس 
P AIN P HYSIOLOGYOnly 14 pages are availabe for public view
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Abstract
group A (17.16±1.30 mins). In group C and group B Sensory block duration was (396±32.17 vs. 355.83±18.48 mins P < 0.001) respectively and was longer than that in group A (321.13±25.08 mins). Also there was prolonged motor block duration in group C and group B recording (338.92±25.2 vs. 302.93±15.24 mins P < 0.001) and was longer than that in group A (280.70±32.35 mins). Time of demand of rescue analgesia dose was significantly long in group C and group B (449.53±52.45 vs. 418.13±41.12 mins P < 0.001) and was longer than group A (361.31±21.42 mins).Both Verapamil and Nalbuphine have additive effect to Bupivacaine improving the all anesthetic parameters of the block. Conclusion: Both drugs produce favorable enhancement of time onset and effective prolongation of duration of sensory and motor blockade and extend the period of postoperative analgesia with superiority to Nalbuphine over Verapamil.