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Preadmission chronic opioid usage and its association with 90-day mortality in critically ill patients: a
Tak Kyu Oh1, In-Ae Song1, Jae Ho Lee2
1Department of Anesthesiology and Pain Medicine, South Korea.
Insights
Chronic opioid use in critically ill patients is linked to a higher risk of 90-day mortality. This association is particularly notable in cancer patients and those without chronic kidney disease.
Area of Science:
- Critical Care Medicine
- Pharmacology
- Epidemiology
Background:
- Investigating the impact of chronic opioid use on patient outcomes in intensive care units (ICUs).
- Understanding the association between long-term opioid therapy and mortality in critically ill populations.
Purpose of the Study:
- To determine the relationship between chronic opioid consumption and 90-day mortality in adult patients admitted to the ICU.
- To compare mortality rates between chronic opioid users and opioid-naïve patients in critical care settings.
Main Methods:
- Retrospective cohort study of 18,409 adult ICU admissions from 2012-2017.
- Defined chronic opioid users as those on regular opioid therapy for >4 weeks pre-ICU admission.
- Utilized propensity matching and multivariable logistic regression for analysis.
Main Results:
- Chronic opioid users (4.1% of cohort) had significantly higher 90-day mortality (OR=1.90-2.20, P<0.001).
- Increased mortality risk was observed in cancer patients and those without chronic kidney disease (CKD).
- No significant association found in non-cancer patients or patients with CKD.
Conclusions:
- Chronic opioid use is independently associated with increased 90-day mortality in critically ill adult patients.
- The heightened risk of mortality is more pronounced in specific subgroups, including cancer patients and non-CKD patients.
Background:
The aim of this study was to investigate the association of chronic opioid usage with 90-day mortality in critically ill patients after admission to the ICU.
Methods:
This retrospective cohort study analysed the medical records of adult patients admitted to ICUs in a tertiary academic hospital between January 2012 and December 2017. Patients taking opioids regularly for more than 4 weeks before ICU admission were defined as chronic opioid users, whereas the others were defined as opioid-naïve patients.
Results:
We selected 18 409 patients for this study, including 757 (4.1%) chronic opioid users. After propensity matching, 2990 patients (chronic opioid users, 757; opioid-naïve, patient: 2233) were included in the analysis. The odds of 90-day mortality were higher in chronic opioid users than in opioid-naïve patients using both the generalised estimating equation model for the propensity-matched cohort (odds ratio=1.90; 95% confidence interval, 1.57-2.31; P<0.001) and the multivariable logistic regression model for the entire cohort (odds ratio=2.20; 95% confidence interval, 1.81-2.66; P<0.001). Additionally, this association was significant in cancer patients and non-chronic kidney disease (CKD) patients and was not significant in non-cancer and CKD patients.
Conclusions:
Our results suggest that in a cohort of critically ill adult patients, chronic opioid use is associated with an increase in 90-day mortality. This association was more evident in cancer patients and non-CKD patients.
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