Clinical trial for the effectiveness of Unilateral Paravertebral Block Versus Unilateral Subarachnoid Block in Unilateral inguinal hernia for Herniorrhaphy

Abstract

Background: Inguinal Herniorrhaphy is most commonly performed surgical procedurein male. Till now inguinal hernia repair was performed under general, regional, and peripheral nerve blocks. So the concept of paravertebral blocks which provided an excellent alternative anaesthesia technique for hernia repair. Aim: To study the effectiveness of unilateral paravertebral block versus unilateral subarachnoid block in unilateral inguinal hernias repair. Materials and Methods: 100 patients of unilateral inguinal hernia where enrolled in the study and randomized into two groups each of 50 patients. Group S (50) receiving subarachnoid block, group P (50) receiving paravertebral block. Time for procedure and onset of action, intraoperative hemodynamics, post-operative analgesia, and ambulation time were compared. Results: Significant difference was observed in time to perform and onset of action with group P (13.08± 1.31) & (15.94± 1.21) and group S (1.35±0.61) & (5.14±0.76) respectively. No significant difference in hemodynamic parameters and post op analgesia lasted for (324.00±52.84min) in group P and (182.67±40.13min) in group S. Conclusion: Paravertebral block provides excellent anesthesia with unilateral motor, sympathetic, and prolonged sensory blockade, provide excellent postoperative analgesia, and encourages early ambulation. Key words: Inguinal hernia, subarachnoid block, paravertebral block, post-operative analgesia