the incidence of hypotension, nausea and vomiting after spinalanesthesia for elective caesarean section: a comparison betweenbupivacaine 0.5% and lidocaine 5%

aim and background:   hypotension and nausea are common side effects during spinal anesthesia. this study compared the incidence of hypotension and nausea-vomiting induced by bupivacaine and lidocaine in parturients undergoing caesarean section under spinal anaesthesia. methods and materials:   in this clinical trial, 120 parturients undergoing caesarean section were randomly allocated into two groups. 60 patients received subarachnoid lidocaine 5% (75-100 mg) and the other group of patients received bupivacaine 0.5% (12-15 mg). if systolic blood pressure decreased to 80 mm hg or less than 70% of the pre-anesthesia value, 5mg ephedrine was injected. we evaluated blood pressure each 3 minutes up to 15 min and every 5 min thereafter till the end of the recovery stay. findings:   there was no statistically significant difference in the incidence of nausea -vomiting between the two groups after spinal anesthesia. on the other hand, there was significant difference in systolic blood pressure 12 minutes after the procedure and also a significant difference was noted in diastolic blood pressure 3, 9, 15, and 40 minutes after performing spinal anesthesia (p < 0.05). the amount of ephedrine used in both groups did not show either any significant difference. conclusions:   intrathecal bupivacaine may yield more hemodynamic stability than intrathecal