• Saudi J Anaesth · Apr 2015

    A randomized controlled prospective study comparing a low dose bupivacaine and fentanyl mixture to a conventional dose of hyperbaric bupivacaine for cesarean section.

    • Himabindu Gandam Venkata, Surender Pasupuleti, Upender Gowd Pabba, Sridevi Porika, and Goutham Talari.
    • Department of Anesthesiology and Critical Care, Gandhi Medical College/Hospital, Secunderabad, Telangana, India.
    • Saudi J Anaesth. 2015 Apr 1; 9 (2): 122-7.

    ContextHormonal and mechanical factors make obstetric patients need strict dose calculations of local anesthetics intrathecally for spinal anesthesia. Any greater dose of local anesthetics can cause hemodynamic instability, maternal morbidity and any lesser dose can produce inadequate block. Hence, we hypothesized in our study that by using low dose of bupivacaine with fentanyl can maintain stable hemodynamics and provide better analgesia.AimThe aim was to compare the hemodynamics and duration of analgesia using a low dose (7.5 mg) bupivacaine fentanyl mixture to a conventional dose (10 mg) of hyperbaric bupivacaine for cesarean section.Settings And DesignDouble-blinded, randomized, controlled prospective study was conducted at a tertiary academic hospital from 2008 to 2011.Materials And MethodsFifty singleton parturient, scheduled for elective caesarean section were randomly allocated into two groups. Study group (group-S) received a combination of 25 μg fentanyl and 7.5 mg of hyperbaric bupivacaine, whereas the control group (group-C) received 10 mg of hyperbaric bupivacaine. Maternal hemodynamics, sensory and motor block, duration of analgesia and the Apgar score of the newborn were compared between the groups.Statistical Analysis UsedObservational descriptive statistics, statistical package for social sciences (SPSS Inc. Released 2006, SPSS for Windows, Version 15.0. Chicago), paired t-test was used as applicable.ResultsThe blood pressure significantly decreased with >25% fall from the baseline in group-C (98.76 ± 8.36) than in group-S (117.32 ± 12.21) with P < 0.001. The duration of effective analgesia was significantly prolonged in the study group than in the control group (P < 0.001).ConclusionThe combination of low dose bupivacaine and fentanyl in comparison to bupivacaine alone is hemodynamically stable and prolonged duration of analgesia in caesarean section.

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