• Manouk Admiraal, Mark L van Zuylen, Henning Hermanns, Hanna C Willems, Gert J Geurtsen, SteegersMonique A HMAHAmsterdam UMC, Vrije Universiteit, Department of Anesthesiology, Amsterdam, The Netherlands., Jan Willem Kallewaard, Markus W Hollmann, and Jeroen Hermanides.
• Amsterdam UMC, University of Amsterdam, Department of Anesthesiology, Amsterdam, The Netherlands.
• J Pain. 2023 Oct 1; 24 (10): 188618951886-1895.

AbstractGlobally, life expectancy is increasing, leading to more surgeries being performed in older patients. Postoperative pain is associated with complications after surgery. The aim of this study is to explore potential age-related risk factors for acute postoperative pain in older patients undergoing surgery. This was a prospective, single-center study. Patients ≥65 years, with and without disability, as defined by the WHO Disability Assessment Schedule 2.0, undergoing elective surgery, were compared. Primary outcome was the postoperative pain (ie, numeric rating scale (NRS) score) on the first postoperative day. Secondary outcomes were postoperative pain and pain trajectories in patients with and without mild cognitive impairment (MCI), frailty, preoperative opioid use, and new-onset disability after surgery. Between February 2019 and July 2020, 155 patients were enrolled. On the first day after surgery, postoperative pain did not differ between patients with and without disability. NRS scores differed between patients with-, and without MCI on the first (P = .01), and second postoperative day (P < .01). Patients who used opioids before surgery reported higher median NRS score on the first (P < .001) and second (P < .01) postoperative day. Out of a total of 1816 NRS scores, 2 pain clusters were identified. Acute postoperative pain did not differ between patients with or without preoperative disability and frailty in older patients undergoing surgery. Reduced postoperative pain in older patients with MCI warrants further investigation. The PIANO study (Comparison of Postoperative NeurocognitiveFunction in Older Adult Patients with and without Diabetes Mellitus) was registered with www.clinicaltrialregister.nl (search term: Which can predict memory problems after surgery better; blood sugar levels or memory before surgery?). PERSPECTIVE: This study explored risk factors for acute postoperative pain in older patients. No differences in postoperative pain were observed in patients with or without preexistent disability or frailty, however, patients with mild cognitive impairment experienced reduced pain. We suggest to simplify pain assessment in this group and take functional recovery into account.Copyright © 2023 United States Association for the Study of Pain, Inc. Published by Elsevier Inc. All rights reserved.

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