• Alopi Patel, Poonam Pai B H, Dina Diskina, Brittany Reardon, and Yan H Lai.
• Mount Sinai West and St. Luke's, Department of Anesthesiology, Perioperative and Pain Medicine, New York, NY, USA. Electronic address: Alopi.patel@mountsinai.org.
• J Clin Anesth. 2020 May 1; 61: 109628.

BackgroundAcetaminophen is available in a variety of modalities but there is conflicting evidence as to whether intravenous provides superior analgesia than oral formulations METHODS: A prospective, randomized, triple-blinded clinical trial was conducted in which 100 participants, scheduled for any laparoscopic unilateral hernia repair surgery in the ambulatory setting, were computer randomized to receive either 975 mg oral acetaminophen or 1000 mg of intravenous acetaminophen. The primary outcomes evaluated were post-anesthesia care unit (PACU) pain scores at arrival, 1 hour discharge, 6 hour post-op as well as total opioid use intraoperatively and in PACU. Secondary outcomes were PACU length of stay, patient reported total opioid use in the first 24 h, pain scores 24 hour post-op and patient satisfaction.ResultsWe found that no significant difference was appreciated between the oral and intravenous acetaminophen groups in any of the primary or secondary outcomes with the p-value of the pain score on arrival of 0.173, pain score at 1 h 0.544, pain score on discharge from PACU 0.586, pain score at 6 h 0.234, pain score at 24 h 0.133, total morphine milligram equivalents (MME) intraoperatively 0.096, total MME in PACU 0.960, time in PACU 0.15, home opioid MME 0.336, and overall patient satisfaction 0.067.ConclusionsWe concluded that in the ambulatory surgery population the efficacy of oral and intravenous acetaminophen is equivalent.Published by Elsevier Inc.

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