Objective:
Ultrasound-guided regional anaesthesia using transversus abdominis plane (TAP) block is a newer and safer method that can be used in patients undergoing liver transplant surgeries. This systematic review and meta-analysis was done to quantify the analgesic potential and opioid-sparing capability of TAP block in these patients.
Methods:
The studies comparing TAP‑block to conventional analgesic regimens for liver transplant were searched. The studies evaluating the comparative 24-h morphine consumption during postoperative period in patients undergoing liver transplant surgeries were searched and included as the primary outcome in the analysis.
Results:
We found two randomised controlled trials and two retrospective studies that on meta-analysis showed that TAP block group had significantly lower requirement of morphine (WMD=27.59 mg; 95% CI: 33.47–21.70) at 24 h for pain mitigation. Also, postoperative nausea and vomiting was lower (RR=0.76; 95% CI: 0.47–1.22) but not statistically significant.
Conclusion:
Ultrasound-guided TAP block provides postoperative analgesic efficacy in patients undergoing liver transplant surgeries. This study was registered in International prospective register of systematic reviews [PROSPERO: CRD42018094595].
Keywords: 24-h morphine, transversus abdominis plane (TAP) block, postoperative nausea and vomiting