Postlaparotomy pain management: Comparison of patient-controlled analgesia pump alone, with subcutaneous bupivacaine infusion, or with injection of liposomal bupivacaine suspension

Abstract

Objective: Efforts to achieve balance between effective pain management and opioid-related adverse events (ORAEs) have led to multimodal analgesia regimens. This study compared opioids delivered via patient-controlled analgesia (PCA) plus liposomal bupivacaine, a long-acting local anesthetic with potential to be an effective component of such regimens, to opioids delivered through PCA alone or PCA plus subcutaneous bupivacaine infusion (ONQ), following laparotomy.Design: Prospective, randomized controlled trial.Setting: Single, tertiary-care institution.Patients: One hundred patients undergoing nonemergent laparotomy.Interventions: Patients were randomly assigned to one of three study treatments: PCA only (PCAO), PCA with ONQ, or PCA with injectable liposomal bupivacaine suspension (EXP).Main Outcome Measures: Cumulative opioid use, daily mean patient-reported pain scores, and ORAEs through 72 hours postoperatively.Results: On average, the EXP (n = 31) group exhibited less than 50 percent of the total opioid consumption of the PCAO (n = 36) group, and less than 60 percent of that for the ONQ (n = 33) group. Postoperative days 1 and 3 pain scores were significantly lower for the EXP group as compared to the ONQ and PCAO groups (p ≤ 0.005). Fewer patients in the EXP group (19.4 percent) experienced ORAEs compared to the PCAO (41.1 percent) and ONQ (45.5 percent) groups (p = 0.002).Conclusions: Laparotomy patients treated with liposomal bupivacaine as part of a multimodal regimen consumed less opioids, had lower pain scores, and had fewer ORAEs. The role of liposomal bupivacaine in the postoperative care of laparotomy patients merits further study.

Injectable Lipid-Based Depot Formulations: Where Do We Stand?

“…While DepoDur and DepoCyt were discontinued from the market in the United States or Europe, Exparel was recently approved (2011) [87,88,93]. The research approaches aiming at exploring this technology for the delivery of bupivacaine in new indications are proliferating [71,72,94]. Besides bupivacaine, ropivacaine was considered as cargo for MVLs for prolonged-duration local anesthesia [65,66].…”