• D H Magnusson, T I Albertsson, F Jonsdottir, and M I Sigurdsson.
• Department of Anaesthesia and Intensive Care Medicine, Peri-operative Services, Landspitali - The National University Hospital of Iceland, Reykjavik, Iceland.
• Anaesthesia. 2023 Aug 1; 78 (8): 9951004995-1004.

AbstractThe use of hypnotic and sedative medication for sleep improvement is common and long-term use has been associated with an increased risk of adverse events and mortality. A proportion of patients might develop long-term use after initiating new persistent use following surgery. This retrospective cohort study aimed to determine the incidence of new persistent hypnotic/sedative use after surgical procedures and associated patient and procedural factors. Data on prescriptions for hypnotic and sedative medications used for sleep improvement were retrieved from the National Prescription Medicine Registry. Medication naivety was defined as not filling a prescription for hypnotics/sedatives from 365 days through 31 days preceding surgery, new use was defined as medication naivety followed by filling a prescription for hypnotic/sedative medication from 30 days before surgery through 14 days after surgery. New persistent hypnotic/sedative use was defined as new use followed by filling another hypnotic/sedative prescription from 15 days through 365 days after surgery. Of 55,414 patients included in the study, 43,297 were naive to hypnotic/sedative medications. Of those naive patients, 4.6% met the criteria for new peri-operative use, of whom 51.6% developed new persistent hypnotic/sedative use. Patient and procedural factors associated with increased risk of new persistent use were older age; female sex; the presence of malignant neoplasm; ischaemic heart disease; and having undergone either cardiac or thoracic surgery. The hazard of long-term mortality was higher for patients with new persistent use (1.39, 95%CI 1.22-1.59) compared with patients who remained naive. While a small ratio of surgical patients initiates the use of hypnotics/sedatives in the peri-operative period, a substantial proportion of these develop persistent use, which is associated with adverse outcomes. Over time, the proportion of patients using hypnotics/sedatives has declined, but the risk of persistent use within this group has remained stable.© 2023 Association of Anaesthetists.

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