BACKGROUND: Although postoperative opioid overprescription has been well studied, little is known about opioid underprescription. This study aims to determine the extent of improper discharge opioid prescription in patients undergoing general surgery procedures. STUDY DESIGN: This retrospective cohort study investigated opioid-naïve adult patients who underwent inpatient general surgery at an academic medical center between June 2012 and December 2019. The primary outcome was the difference between individual patient’s inpatient daily oral morphine milligram equivalent (MME) 24 hours before discharge and patient’s prescribed daily MME at discharge. The data were analyzed using chi-square, Mann–Whitney, Wilcoxon, and Kruskal–Wallis tests and multivariable logistic regression. RESULTS: Among 5,531 patients, 58.1% had opioid overprescription, and 22.4% had opioid underprescription. Median prescribed daily MME was 311% of median inpatient daily MME in overprescribed patients and 56.3% of median inpatient daily MME in underprescribed patients. About half (52.3%) of patients who consumed no opioids on the day before discharge were opioid overprescribed, and 69.9% of patients who required inpatient daily opioid of >100 MME were opioid underprescribed. Opioid-underprescribed patients had an increased opioid refill rate 1 to 30 days after discharge, whereas opioid-overprescribed patients had an increased refill rate 31 to 60 days after discharge. From 2017 to 2019, the percentage of overprescribed patients decreased by 35.8%, but the percentage of underprescribed patients increased by 42.4%. CONCLUSIONS: Although avoiding postoperative opioid overprescription remains imperative, preventing postoperative opioid underprescription is also essential. We recommend using a patient-centered approach to match the daily dose of opioid prescription with each patient’s inpatient daily opioid consumption.
Although postsurgical overprescription has been well-studied, postsurgical opioid underprescription remains largely overlooked. This retrospective cohort study was to investigate the extent of discharge opioid overprescription and underprescription in patients after neurological surgeries. Six thousand nine hundred forty-nine adult opioid-naive patients who underwent inpatient neurosurgical procedures at the University of California San Francisco were included. The primary outcome was the discrepancy between individual patient's prescribed daily oral morphine milligram equivalent (MME) at discharge and patient's own inpatient daily MME consumed within 24 hours of discharge. Analyses include Wilcoxon, Mann–Whitney, Kruskal–Wallis, and χ2 tests, and linear or multivariable logistic regression. 64.3% and 19.5% of patients were opioid overprescribed and underprescribed, respectively, with median prescribed daily MME 360% and 55.2% of median inpatient daily MME in opioid overprescribed and underprescribed patients, respectively. 54.6% of patients with no inpatient opioid the day before discharge were opioid overprescribed. Opioid underprescription dose-dependently increased the rate of opioid refill 1 to 30 days after discharge. From 2016 to 2019, the percentage of patients with opioid overprescription decreased by 24.8%, but the percentage of patients with opioid underprescription increased by 51.2%. Thus, the mismatched discharge opioid prescription in patients after neurological surgeries presented as both opioid overprescription and underprescription, with a dose-dependent increased rate of opioid refill 1 to 30 days after discharge in opioid underprescription. Although we are fighting against opioid overprescription to postsurgical patients, we should not ignore postsurgical opioid underprescription.
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