Analgesic Efficacy & Opioid Sparing Effect of USG Guided Tranversus Abdominis Plane (Tap) Block After Lower Abdominal Surgeries

Introduction: Traditionally, the TAP block was performed using anatomical landmarks and a blind technique, but this method had a steep learning curve and was associated with higher failure rates and potential complications such as bowel perforation or peritoneal breach. The advent of ultrasonography has revolutionized regional anesthesia by enabling direct visualization of anatomical structures, leading to improved accuracy, safety, and efficacy of the TAP block. Ultrasound-guided (USG) TAP block allows precise placement of the needle and real-time monitoring of local anesthetic spread in the correct fascial plane, reducing the risk of complications and ensuring consistent analgesic outcomes.  Consequently, the USG-guided TAP block has become an integral component of multimodal analgesia protocols in modern anesthetic practice.

Materials and Methods: This study was conducted at the operation theatre and in-patient department of the Department of General Surgery and Department of Obstetrics and Gynecology, in cooperation with the Department of Anaesthesiology at Government Medical College, Kantbagh, Baramulla, Jammu and Kashmir.

Results: Postoperative VAS scores showed a gradual increase from 1.9 at 1 hour to a peak of 3.9 at 8 hours, followed by a decline to 2.8 at 24 hours (p < 0.001). The mean time to first analgesic request was 2.8 ± 1.1 hours. The average total tramadol requirement over 24 hours was 147.9 ± 55.1 mg.

Conclusions: The USG-TAP block is an effective and safe regional anesthetic technique for postoperative pain management in lower abdominal surgeries. It significantly delays the need for rescue analgesia, reduces overall opioid consumption, and maintains hemodynamic stability, with minimal side effects. These findings support the integration of TAP block into enhanced recovery after surgery (ERAS) protocols to improve pain control and minimize opioid-related complications.