Comparative study of quality of subarachnoid blocks for caeasarean section by using bupivacaine alone & bupivacaine - fentanyl combination
Keywords:subarachnoid block, bupivacaine-fentanyl combination, quality of block
Background: The popularity of subarachnoid block (SAB) in cesarean section in recent times is due to better understanding of the physiological changes associated with it and proper appreciation of its advantages & complications. Hyperbaric bupivacaine in adequate dose (12mg or more) for SAB often causes complications like hypotension, shivering, nausea, vomiting, chest pain & epigastric pain.
Objectives: The aim of study is to reduce these complications by using bupivacaine-fentanyl combination.
Method: 150 patients of ASA grade I & II waiting for cesarean section under SAB were randomly allocated into three equal groups.
Group A : Received 0.5% hyperbaric bupivacaine-10 mg (2ml)
Group B : Received 0.5% hyperbaric bupivacaine-10 mg (2ml) & fentanyl- 15 ?g [0.3ml]
Group C : Received 0.5% hyperbaric bupivacaine - 8 mg (1.6ml) & fentanyl- 15 ?g. [0.3ml]
Parametric data like pulse, blood pressure, among the groups were analyzed by ANOVA test & nonparametric data like chest discomfort, epigastric pain, nausea, vomiting were analyzed by chi-square test.
Results: In this study we found better analgesia & quality of block in bupivacaine-fentanyl group than bupivacaine alone group (p<.001).
Conclusion: By adding fentanyl we can reduce the dose of bupivacaine & also improve the quality of block.
Journal of BSA, 2009; 22(2): 61-65