• Wei-Chen Lin, Wen-Han Chang, Ya-Mei Bai, Cheng-Ta Li, Mu-Hong Chen, and Tung-Ping Su.
• Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
• J Chin Med Assoc. 2022 Apr 1; 85 (4): 519524519-524.

BackgroundThe acute onset of insomnia following surgical operations has long been neglected, and long-term outcomes are not clear. Our aims were (1) to evaluate the risk of postoperative insomnia, (2) to identify which surgeries are related, and (3) to follow patients with postoperative insomnia for the development of major mental and physical disorders.MethodsWe conducted a case-crossover study comprising 9898 participants with new-onset insomnia from the Taiwan National Health Insurance Research Database between 1997 and 2011. We determined the odds of having surgery in the case period (30 days) before the onset of insomnia by logistic regression analysis. Types of surgery that postoperative insomniacs had undergone were compared with age-/gender-/timing-matched controls. Longitudinal follow-up of postoperative and non-postoperative insomniacs was performed.ResultsThe odds ratio of surgical exposure vs. nonexposure within 30 days was 12.05 (p < 0.001) before new-onset insomnia. Surgery of musculoskeletal and nervous systems predisposed to insomnia. The duration of hypnotic drug use (0.83 years) was shorter and with a nearly 2-fold faster remission rate in postoperative than in non-postoperative insomniacs (1.45 years). Approximately 25% of each insomnia group developed persistent sleep disturbance.ConclusionSurgery is associated with subsequent insomnia, which has a shorter duration and a faster remission than non-postoperative insomnia. Our data provide a reference for postoperative care, and warrant future studies.Copyright © 2022, the Chinese Medical Association.

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