Background: A pain free post operative period is a boon to mother for caring the neonate. We compared injection butorphanol and fentanyl as an adjuvant to bupivacaine in primary parturients for LSCS (Lower Segment Caesarean Section) with respect to duration of analgesia. Aims and Objectives: To study the effect of butorphanol vs fentanyl on duration of analgesia when added to bupivacaine for LSCS amongst primi parturients and to observe the block characteristics as secondary outcome. Materials and Methods:: Study was carried out in 90 patients divided equally into three groups which included 12mg(2 mL) of 0.5% hyperbaric bupivacaine with 0.5 mL NS, 12mg (2 mL) of 0.5% hyperbaric bupivacaine 25 μg butorphanol made upto 2.5 mL with NS and 12mg(2 mL) of 0.5% hyperbaric bupivacaine with 25μg fentanyl made upto 2.5mL with normal saline. All patients were observed for duration of analgesia. Also Heart Rate (HR), Systolic and Diastolic Blood Pressure (SBP, DBP), two segment regression time of sensory block, motor block were assessed. The results were compiled and statistically analyzed using Chi-square test for nonparametric data and ANOVA for parametric data. Results: Two segment sensory regression is significantly prolonged in group with intrathecal administration of Bupivacaine with Butorphanol (190.33±15.86) than Bupivacaine with Fentanyl (170.67±20.83) and Bupivacaine with Normal saline (150.33±16.91). Duration of effective post operative analgesia was 349.67, 591.87 and 468.00 min in Group I, Group II and Group III respectively. There was no significant difference in onset of sensory and motor blockage in all three groups. HR, SBP and DBP were comparable among the groups. Conclusions: Intrathecal bupivacaine with 25 μg butorphanol mixture was clinically better as it provided longer duration of analgesia along with prolonged sensory block when compared to intrathecal bupivacaine with 25μg fentanyl mixture in primary parturients for LSCS.

No abstract

Background: Opioids have been used with peripheral nerve blocks for its synergistic effect to enhance the postoperative analgesic effectiveness of regional block. Nalbuphine, a newer opioid with an analgesic equivalence of morphine, has a ceiling effect on respiratory depression. The aim of the present study was to evaluate the effect of nalbuphine when used as an adjuvant to levobupivacaine on 24-hour postoperative analgesic requirement after brachial plexus block (BPB). Materials and methods: Sixty adult patients of either sex of American Society of Anesthesiologists (ASA) physical status I and II were randomized into two groups of 30 each to receive a total volume of 30 mL of study drug for supraclavicular brachial plexus block (SBPB): Group N-29 mL of 0.5% levobupivacaine with 1 mL of 10 mg nalbuphine; Group S-29 mL of 0.5% levobupivacaine with 1 mL of normal saline. Patients observed for 24-hour postoperative mean requirement of rescue analgesia, that is, diclofenac sodium, block characteristics, visual analog scale (VAS) scores, and the associated complications. Results: Demographic profile was comparable between the two groups. The mean dose of rescue analgesic required between the groups N and S was 127.5 ± 34.96 mg and 150 ± 37.5 mg (p = 0.000), respectively. The average VAS score at different time intervals was highly significant between the two groups (p <0.05). Similarly, block characteristics were statistically significant between the two groups; that is, onset was early, but the duration was prolonged in group N (p <0.05). Complications, although more in group N, were minor and statistically insignificant (p >0.05). Conclusion: Nalbuphine 10 mg as an adjunct to 0.5% levobupivacaine significantly reduced the requirement of rescue analgesia compared to placebo, with no significant major adverse effects.