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Research Article: Erector spinae plane block on post-anesthesia care unit opioid consumption in robotic and laparoscopic sleeve gastrectomy: a retrospective observational single-center cohort analysis

Date Published: 2026-05-19

Abstract:
Postoperative opioid analgesia poses multiple risks to bariatric patients undergoing robotic or laparoscopic sleeve gastrectomy. Truncal blocks, including the erector spinae plane block, are utilized for perioperative pain management in abdominal and thoracic surgeries. We hypothesized that the erector spinae plane blocks would decrease opioid consumption in bariatric surgery patients. We conducted a single-center propensity-matched retrospective cohort study evaluating the impact of erector spinae plane blocks in bariatric surgery. The inclusion criteria were adults (?18 years old) who underwent robotic or laparoscopic sleeve gastrectomy from January 2023 to November 2024. One:one nearest-neighbor propensity matching was performed using patient demographics, procedure type, and preexisting comorbidities to address confounding factors. Subgroup analysis of recovery parameters between robotic vs. laparoscopic sleeve gastrectomy was also performed. Six hundred seventy participants were identified with similar demographics and underlying conditions between the erector spinae plane ( n =?240) and control ( n =?430) groups. Propensity matched groups ( n =?179 per group) identified that erector spinae plane block reduced post-anesthesia care unit oral morphine equivalents (?4.81?mg, 95% CI: ?9.76 to ?0.29, p =?0.04), intraoperative morphine equivalents (?5.85?mg, 95% CI: ?9.27 to ?2.42, p <?0.001), intraoperative hydromorphone (?0.11?mg, 95% CI: ?0.16 to ?0.04, p =?<0.001), and intraoperative ketamine consumption (?6.33?mg, 95% CI: ?10.98 to ?1.68, p =?0.01). Multiple linear regression demonstrated significantly higher PACU opioid requirements in laparoscopic procedures compared to robotic-assisted procedures (4.64?mg, 95% CI: 0.53––8.75, p =?0.03) Erector spinae plane block resulted in a reduction in opioid consumption both during and after robotic and laparoscopic sleeve gastrectomy. Our work is consistent with randomized trials in the field, demonstrating statistically relevant decreases in opioid use, and is the first to explore its application in robotic-assisted bariatric surgery.

Introduction:
Postoperative opioid analgesia poses multiple risks to bariatric patients undergoing robotic or laparoscopic sleeve gastrectomy. Truncal blocks, including the erector spinae plane block, are utilized for perioperative pain management in abdominal and thoracic surgeries. We hypothesized that the erector spinae plane blocks would decrease opioid consumption in bariatric surgery patients.

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