• Anthony P Notaras, Elisabeth Demetriou, Jessica Galvin, and Erez Ben-Menachem.
• Concord Hospital, Sydney, Australia.
• J Clin Anesth. 2016 Dec 1; 35: 129-135.

Study ObjectiveTo quantify the impact of preoperative medication adherence on recovery length of stays and complication rates.DesignCross-sectional analytical study.SettingPostanesthetic care unit (PACU) of a single-center tertiary hospital.PatientsSurgical patients admitted for surgery at our institution over a 4-month period.InterventionA data collection tool was used to collect demographic data, length of stay in recovery, prespecified conditions likely to impact on PACU recovery (chronic pain, insulin-dependent diabetes, epilepsy, hypertension, on a methadone program, and Parkinson disease), medication compliance, and complications in PACU.MeasurementsDifferences among categorical variables were assessed for significance using the χ2 test; continuous parametric data were compared using a time to survival analysis via Kaplan-Meier estimates and Cox proportional hazard regressions to account for possible confounders.Main ResultsPreoperative medication compliance for the prespecified conditions was 65.1%. Patients with a preoperative condition spent more time in the PACU compared to patients without a preoperative condition. Time in PACU was not significantly longer for patients who took their medications compared to those who failed to take their medications. Patients with multiple prespecified conditions were more likely to incur a postoperative complication compared to patients without a prespecified condition. Patients with preoperative hypertension and insulin-dependent diabetes incurred higher complication rates in PACU for medication nonadherence compared to medication adherence.ConclusionThis study taken together with accruing evidence suggests that preoperative medication omission remains an ongoing issue that can influence complication rates in the PACU. Patients with preoperative conditions stay longer in PACU, and medication omission was associated with higher rates of certain postoperative complications in PACU. This identifies patients likely to require more interventions and greater recovery resources. Further research into the impact of medication omission on recovery parameters after discharge from the PACU is warranted.Crown Copyright © 2016. Published by Elsevier Inc. All rights reserved.

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