Background: Paravertebral black is important in giving long-lasting unilateral anesthesia, hemodynamic constancy, rapid ambulation and long term relief from pain. Paravertebral block leads to ipsilateral segmental anesthesia Via injecting local an aesthetic over the roots of spinal nerve along the sides of the vertebral column. It is backed majorly for unilateral techniques like thoracotomy, breast operations, trauma to chest wall, hernia or renal operations. The present study was conducted with the aim to compare paravertebral block versus unilateral spinal anaesthesia for non complicated inguinal hernia repair. Materials and methods: The present prospective comparative study was conducted in the department of anaesthesia for a period of 2 years. The study included 40 male subjects between 20-60 years of age belonging to ASA grade I or II category for unilateral inguinal hernia repair that were randomly divided into 2 groups. Group P subjects received paravertebral block between T10 to L2 with bupivacaine and epinephrine and Group S subjects received spinal anaesthesia with hyperbaric bupivacaine. Premedication with midazolam and fentanyl was done amongst all the patients. The block was regarded as success if the start of pinprick discrimination began within 15 min or if the sensory blockade was obtained within a maximum time of 30 minutes. Sensory block assessment was done by pinprick from the level of T4 downwards . All the vital were noted at baseline, before initiation of bock and immediately after block and then every 3 minutes for initial 15 min and thereafter, every 10 minutes. Student t test was used for analysis and probability value of less than 0.05 was regarded as significant.
Results: The present study enrolled 00 patients with 40 patients in each group. The mean time to perform block in Group P was 18.53±1.99 and in Group S was 6.10±1.27. The difference was significant between the two groups. Nausea was observed amongst 4 patients of Group S. Nausea was observed amongst 6 patients of Group S. 30 patients of Group P and 10 of Group S had recovery room bypass. Conclusion: Paravertebral block is more efficacious compared to spinal anesthesia in inguinal hernia repair, as it provides better analgesia, hemodynamic stability and the time to reach discharge is considerably lower.
Key words: analgesia, anesthesia, discharge, Paravertebral