Comparison of lumbar anesthesia with different concentration of bupivacaine for second caesarean section

Objective To investigate optimal concentration of bupivacaine for lumbar anesthesia in undergoing second cesarean section.Methods Sixty patients who underwent the second caesarean section with spinal-epidural anesthesia were randomly divided into two groups. Every group involved 30 cases. Group A received 7.5 mg of 0.5% bupivacaine for lumbar anesthesia; group B received 7.5 mg of 0.25% bupivacaine. The anaesthetic effects and side effects were compared between the two groups.Results The effective time, anesthesia level, the operation time and newborn Apgar score had no distinct difference between two groups. The usage rate of lidocaine in group A were less than those in group B(P0.05). The anaesthetic effects in group A was better than that in group B(P0.05).Conclusion 0.5% bupivacaine is more effective and safe than 0.25% bupivacaine for lumbar anesthesia in second cesarean section.