Effects of Novel Multimodal Transversus Abdominis Plane Block on Postoperative Opioid Usage and Hospital Length of Stay Following Elective Ventral Hernia Repair

Abstract

Background and objective

Traditional transversus abdominis plane (TAP) blocks consisting of a local anesthetic, typically bupivacaine, have previously been shown to reduce postoperative pain following gastrointestinal surgery, including hernia repair. However, elective abdominal wall reconstructions for the repair of large ventral hernias continue to cause patients significant postoperative pain, resulting in prolonged hospital stays and need for opioid pain medication. This study aimed to analyze the postoperative opioid pain medication usage and hospital length of stay (LOS) in patients who received a nontraditional multimodal TAP block of ropivacaine (local anesthetic), ketorolac (non-steroidal anti-inflammatory), and epinephrine following elective ventral hernia repair.

Methods

A retrospective review of medical records for patients who underwent elective robotic ventral hernia repair by a single surgeon was conducted. Postoperative hospital LOS and opioid usage for patients with the multimodal TAP block were compared to those without.

Results

A total of 334 patients met the inclusion criteria for LOS analysis: 235 received the TAP block and 109 did not. Patients who received the TAP block had a statistically significant shorter LOS compared to patients who had no TAP block (1.09 ± 1.22 days vs. 2.53 ± 1.57 days; P<0.001). Medical records for 281 patients, 214 with the TAP block and 67 without the TAP block, contained information and were analyzed for postoperative opioid usage. A statistically significantly fewer number of patients who had the TAP block required hydromorphone patient-controlled analgesia pump (3.3% vs. 36%; P<0.001) and oral opioids (29% vs. 78%; P<0.001) postoperatively. Those with TAP block required intravenous opioids more frequently (50% vs 10%; P<0.001) although at much less dosages than those without TAP block (4.86 ± 2.62 mg vs. 10.29 ±3.90 mg; P<0.001).

Conclusion

In conclusion, this multimodal TAP block of ropivacaine, ketorolac, and epinephrine may represents an effective method to improve hospital LOS and postoperative opioid usage in patients undergoing robotic abdominal wall reconstruction for ventral hernia repair.