Safety profile of intraoperative methadone for analgesia after major spine surgery: An observational study of 1,478 patients
DOI:
https://doi.org/10.5055/jom.2018.0435Keywords:
methadone, opioid, chronic pain, spine surgeryAbstract
Objective: To investigate the incidence of perioperative adverse events in patients receiving intravenous methadone for major spine surgery.
Design: Retrospective review of perioperative records from March 2011 and February 2016.
Setting: University of Virginia Healthsystem.
Patients: Adult patients undergoing elective spinal fusion of two or more levels. Main Outcome Measures: Incidence of respiratory depression, time to extubation, hypotension, hypoxemia, reintubation, cardiac complications, and death.
Results: Reviewed 1,478 patient records. Mean intraoperative methadone dose was 0.14 ± 0.07 mg/kg. A total of 1,142 patients (77.4 percent) were extubated in the operating room, 543 (36.8 percent) experienced respiratory depression, 1,180 (79.8 percent) hypoxemia, and 22 (1.5 percent) required reintubation. Cardiac complications included arrhythmias (289 patients, 29.9 percent), QTc prolongation (568 patients, 58.8 percent), and myocardial infarction (16 patients, 1.1 percent). Two in hospital deaths occurred (0.14 percent).
Conclusions: Mild-moderate respiratory depression is observed following a onetime dose of intraoperative methadone, and monitoring in an appropriate postoperative setting is recommended.
References
Gourlay GK, Wilson PR, Glynn CJ: Pharmacodynamics and pharmacokinetics of methadone during the perioperative period. Anesthesiology. 1982; 57: 458-467.
Kharasch ED: Intraoperative methadone: Rediscovery, reappraisal, and reinvigoration? Anesth Analg. 2011; 112: 13-16.
Gourlay GK, Willis RJ, Wilson PR: Postoperative pain control with methadone: Influence of supplementary methadone doses and blood concentration—Response relationships. Anesthesiology. 1984; 61: 19-26.
Gagnon B, Almahrezi A, Schreier G: Methadone in the treatment of neuropathic pain. Pain Res Manag. 2003; 8: 149-154.
Gottschalk A, Durieux ME, Nemergut EC: Intraoperative methadone improves postoperative pain control in patients undergoing complex spine surgery. Anesth Analg. 2011; 112: 218-223.
Murphy GS, Szokol JW, Avram MJ, et al.: Clinical effectiveness and safety of intraoperative methadone in patients undergoing posterior spinal fusion surgery: A randomized, double-blinded, controlled trial. Anesthesiology. 2017; 126: 822-833.
Portenoy RK, Mehta Z, Ahmed E: Cancer Pain Management with Opioids: Optimizing Analgesia. Waltham, MA: UpToDate, 2017.
Team RDC: R: A Language and Environment for Statistical Computing. Vienna, Austria: R Foundation for Statistical Computing, 2015.
Sciubba DM, Yurter A, Smith JS, et al.: A comprehensive review of complication rates after surgery for adult deformity: A reference for informed consent. Spine Deform. 2015; 3: 575-594.
Gourlay GK, Willis RJ, Lamberty J: A double-blind comparison of the efficacy of methadone and morphine in postoperative pain control. Anesthesiology. 1986; 64: 322-327.
Eap CB, Buclin T, Baumann P: Interindividual variability of the clinical pharmacokinetics of methadone: Implications for the treatment of opioid dependence. Clin Pharmacokinet. 2002; 41: 1153-1193.
Plummer JL, Gourlay GK, Cherry DA, et al.: Estimation of methadone clearance: Application in the management of cancer pain. Pain. 1988; 33: 313-322.
Published
How to Cite
Issue
Section
License
Copyright 2005-2024, Weston Medical Publishing, LLC
All Rights Reserved