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Comparative Study
. 2017 Apr;265(4):702-708.
doi: 10.1097/SLA.0000000000001945.

Predictors of In-hospital Postoperative Opioid Overdose After Major Elective Operations: A Nationally Representative Cohort Study

Christy E Cauley  1 , Geoffrey Anderson, Alex B Haynes, Mariano Menendez, Brian T Bateman, Karim Ladha
Affiliations
Comparative Study

Predictors of In-hospital Postoperative Opioid Overdose After Major Elective Operations: A Nationally Representative Cohort Study

Christy E Cauley et al. Ann Surg. 2017 Apr.

Erratum in

Abstract

Objective: The aim of this study was to describe national trends and outcomes of in-hospital postoperative opioid overdose (OD) and identify predictors of postoperative OD.

Summary of background data: In 2000, the Joint Commission recommended making pain the 5th vital sign, increasing the focus on postoperative pain control. However, the benefits of pain management must be weighed against the potentially lethal risk of opioid OD.

Methods: This is a retrospective multi-institutional cohort study of patients undergoing 1 of 6 major elective inpatient operation from 2002 to 2011 using the Nationwide Inpatient Sample, an approximately 20% representative sample of all United States hospital admissions. Patients with postoperative OD were identified using ICD-9 codes for poisoning from opioids or adverse effects from opioids. Multivariate logistic regression was used to identify independent predictors.

Results: Among 11,317,958 patients, 9458 (0.1%) had a postoperative OD; this frequency doubled over the study period from 0.6 to 1.1 overdoses per 1000 cases. Patients with postoperative OD died more frequently during their hospitalization (1.7% vs 0.4%, P < 0.001). Substance abuse history was the strongest predictor of OD (odds ratio = 14.8; 95% confidence interval: 12.7-17.2). Gender, age, income, geographic location, operation type, and certain comorbid diseases also predicted OD (P < 0.05). Hospital variables, including teaching status, size, and urban/rural location, did not predict postoperative OD.

Conclusions: Postoperative OD is a rare, but potentially lethal complication, with increasing incidence. Postoperative monitoring and treatment safety interventions should be thoughtfully employed to target high-risk patients and avoid this potentially fatal complication.

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Figures

Figure 1:
Figure 1:
Study Cohort Selection Flowchart
Figure 2:
Figure 2:
Postoperative Opioid Overdoses per 1,000 Cases by Year
Figure 3:
Figure 3:
Postoperative Opioid Overdoses per 1,000 cases by Operation Type
See this image and copyright information in PMC

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