Introduction: TAP catheter analgesia offers a viable alternative to epidural for midline laparotomy. By combining data from three trials, we present a comprehensive analysis, underscoring TAP PCA’s effectiveness and safety across diverse clinical contexts, including in emergency. Methods: Data from three studies were pooled to assess TAP catheter analgesia for post-operative pain relief in patients with midline laparotomy: the STAPLE Trial (quasi-experimental in emergency laparotomies), the WIRELESS Trial (RCT on Ropivacaine via TAP PCA (patient-controlled analgesia) vs. epidural PCA), and the TABLET Trial (bilateral thrice daily bupivacaine injection through TAP catheter vs. continuous epidural infusion). Results: The STAPLE trial showed on-demand bupivacaine infusion through a TAP catheter in emergency midline laparotomy (58 patients) reduced rescue doses (0.17±0.50 vs. 1.89±0.89), lowered VAS scores at 6 hours (3.07 vs. 4.65) and 24 hours (2.81 vs. 4.40), enabled 13-hour earlier mobilization, and decreased pulmonary complications, when compared to 62 historical controls. The WIRELESS trial (50 patients randomized in each group) found TAP-PCA non-inferior to epidural PCA in pain relief over 72 hours. Epidural had more complications, with 34% requiring discontinuation versus 10% in TAP. While epidural showed lower VAS at 6 hours (2.7 vs. 3.08), this difference was clinically insignificant. TAP had an earlier flatus passage and shorter median hospital stay (5 vs. 6 days). The TABLET trial randomized 100 midline laparotomy patients (elective and emergency) and demonstrated equivalent pain relief at rest and during exertion up to 72 hours, with fewer complications in the TAP group (0 vs. 4). Conclusion: The TAP block provides effective analgesia for emergency and elective laparotomies, promoting early mobilization and fewer complications, especially in cases where epidural anesthesia is unsuitable or unavailable, reducing dependency on anesthesiologists and high-dependency units.
Kumar et al. (Sun,) studied this question.