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Background: The efficacy of transversus abdominis plane (TAP) block has been demonstrated in postoperative analgesia, but few studies have evaluated its intraoperative effects. We aimed to describe the intraoperative hemodynamic and analgesic effects of pre-incisional TAP block in patients undergoing total abdominal hysterectomy. Methods: Seventy women proposed for total abdominal hysterectomy indicated for uterine fibroids, classified ASA I and II were randomized in a double-blinded model to Group A (n = 35) receiving bilateral ultrasound-guided TAP block with ropivacaine and Group B (n = 35) receiving bilateral ultrasound-guided TAP block with normal saline, followed by general anesthesia. The variations of the heart rate (HR) and mean arterial blood pressure (MABP) and intraoperative fentanyl consumption were studied. Results: At the arrival in the operating room, there was no significant difference in heart rate and mean arterial pressure noted in both groups. (HR: 85.38 ± 8.44 pulsations/min versus 86.30 ± 10.05 pulsations/min, p = 0.621; MABP: 94.97 ± 13.46 mmHg versus 96.36 ± 12.41 mmHg, p = 0.533). Before surgical incision, no statistically significant difference was detected between the two groups regarding the heart rate and the mean arterial blood pressure. After surgical incision, both the heart rate and mean arterial blood pressure were significantly higher in the Group B. There was a significant decrease in intraoperative fentanyl requirements in the Group A compared to the Group B (293.58 ± 60.59 mcg versus 449.44 ± 71.31 mcg, p < 0.001). Conclusion: Pre-incisional TAP block attenuates hemodynamic responses to surgical stress and decreases intraoperative fentanyl requirements in patients undergoing total abdominal hysterectomy.

Intraoperative Hemodynamic and Analgesic Effects of Pre-Incisional Transversus Abdominis Plane Block during Total Abdominal Hysterectomy