• Alexander J Kim, Robert Jason Yong, and Richard D Urman.
• 1 Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital , Boston, Massachusetts.
• J Laparoendosc Adv Surg Tech A. 2017 Sep 1; 27 (9): 909-914.

IntroductionThe concepts of Enhanced Recovery After Surgery (ERAS®) have steadily increased in usage, with benefits in patient outcomes and hospital length of stay. One important component of successful implementation of ERAS protocol is optimized pain control, via the multimodal approach, which includes neuraxial or regional anesthesia techniques and reduction of opioid use as the primary analgesic. Transversus abdominis plane (TAP) block is one such regional anesthesia technique, and it has been widely studied in abdominal surgery.Materials And MethodsWe performed an extensive literature search in MEDLINE and PubMed. We review the benefits of TAP blocks for colorectal surgery, both laparoscopic and open. We organize the data by surgery type, by method of TAP block performance, and by a comparison of TAP block to alternative analgesic techniques or to placebo. We examine different endpoints, such as postoperative pain, analgesic use, return of bowel function, and length of stay.ResultsThe majority of studies examined TAP blocks in the context of laparoscopic colorectal surgery, with many, but not all, demonstrating significantly less use of postoperative opioids in comparison to placebo, wound infiltration, and standard postoperative patient-controlled analgesia with intravenous opioid administration. There is evidence that use of liposomal bupivacaine may be more effective than conventional long-acting local anesthetics. Noninferiority of TAP infusions has been demonstrated, compared with continuous thoracic epidural infusions.ConclusionTAP blocks are easily performed, cost-effective, and an opioid-sparing adjunct for laparoscopic colorectal surgery, with minimal procedure-related morbidity. The evidence is in concordance with several of the goals of ERAS pathways.

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