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The Effect of Different Volumes of Ilioinguinal-Iliohypogastric Nerve Block on Postoperative Analgesia in Inguinal Hernia Surgery
Sponsor: Saglik Bilimleri Universitesi Gazi Yasargil Training and Research Hospital
Summary
The primary objective of this study is to evaluate and compare the efficacy of different volumes of local anesthetics, administered at the same total dose, for ilioinguinal and iliohypogastric (II/IH) nerve blocks in patients undergoing unilateral inguinal hernia repair. The investigators aim to determine whether varying the injectate volume-while keeping the total drug amount constant-influences the quality and duration of postoperative analgesia. By monitoring pain scores and opioid consumption, this research seeks to identify the optimal volume-to-dose ratio for enhancing patient recovery and pain management following inguinal surgery.
Key Details
Gender
All
Age Range
18 Years - 75 Years
Study Type
INTERVENTIONAL
Enrollment
70
Start Date
2026-04-14
Completion Date
2026-11-14
Last Updated
2026-05-12
Healthy Volunteers
No
Interventions
Bupivacaine (Ilioinguinal-iliohypogastric nerve block)
"Participants are randomized into two intervention groups to receive ultrasound-guided ilioinguinal-iliohypogastric nerve blocks with a fixed total dose of 37.5 mg bupivacaine. Group 1 (Low Volume): Receives 10 mL of 0.375% bupivacaine. Group 2 (High Volume): Receives 20 mL of 0.1875% bupivacaine. The procedure is performed using a high-frequency linear ultrasound probe. After the identification of the ilioinguinal and iliohypogastric nerves between the internal oblique and transversus abdominis muscles, the specified volume of local anesthetic is injected. All patients undergo the same surgical procedure (unilateral inguinal hernia repair) under spinal anesthesia. The primary focus is to evaluate the impact of local anesthetic volume on the duration and quality of postoperative analgesia."