Randomised Controlled Clinical Trial of Spinal Anesthesia Versus Paravertrebral Block for Hernia Surgery

Ultrasound-guided paravertebral nerve block can provide effective somatic analgesia, which is safe and suitable for surgical patients. In this study, paravertebral nerve block was applied into open unilateral inguinal hernia repair surgery to observe its safety and analgesic effect. A total of 83 patients scheduled for open unilateral inguinal hernia repair surgery were randomly divided into two groups according to computer-generated randomization sequence with different methods of anesthesia: 42 patients with subarachnoid block (group A) and 41 patients with paravertebral nerve block (group B). The two groups were applied with different appropriate anesthesia methods accordingly. The perioperative vital signs, visual analog scale scores, time and dosage of additional analgesics, time to get out of bed, and complications of the two groups were monitored and recorded. In group B, the vital signs were more stable during the operation, the postoperative analgesia time was longer, the time for additional analgesics after the operation was later, the dose was less, the time to get out of bed was earlier, and the perioperative complications were less (P < 0.05). Ultrasound-guided paravertebral nerve block could meet the anesthesia requirements for open unilateral inguinal hernia repair surgery and provide effective postoperative analgesia.Clinical Trial Identifier: ChiCTR1800017575.