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COVID-19-Associated Outcomes of Critical Illness in Patients with Frailty: a Cohort Study
Carmel L Montgomery1, Andrea Davenport2, Lazar Milovanovic2
1Faculty of Nursing, College of Health Sciences, University of Alberta, Edmonton.
Insights
Pre-admission frailty in critically ill COVID-19 patients was 20.2%, significantly increasing hospital mortality risk. Frailty assessment is crucial for predicting outcomes in these patients.
Area of Science:
- Critical Care Medicine
- Geriatrics
- Infectious Diseases
Background:
- Pre-admission frailty is linked to increased mortality in critically ill patients.
- Understanding frailty's impact in COVID-19 critical illness is essential.
Purpose of the Study:
- To determine the prevalence of frailty in intensive care unit (ICU) patients with COVID-19.
- To assess the association between pre-admission frailty and hospital mortality in this cohort.
Main Methods:
- Historical cohort study of adult ICU admissions in Alberta, Canada (May-October 2020).
- Frailty assessed using the Clinical Frailty Scale (CFS), with frailty defined as CFS score ≥5.
- Primary outcomes: frailty prevalence and hospital mortality.
Main Results:
- The cohort (n=521) had a 34.2% frailty prevalence.
- Among COVID-19 ICU admissions (n=99), 20.2% had pre-admission frailty.
- Hospital mortality was significantly higher in frail COVID-19 patients (35.4%) compared to non-frail (14.0%).
Conclusions:
- Pre-admission frailty is prevalent in COVID-19 ICU admissions and strongly associated with increased hospital mortality.
- Frailty assessment offers valuable prognostic information for COVID-19 ICU admissions.
- Further research is needed on frailty's impact on patient-centered outcomes.
Background:
Pre-admission frailty has been associated with higher hospital mortality in patients with critical illness. We aimed to measure the prevalence of frailty and its associated outcomes in patients with COVID-19 critical illness.
Methods:
A historical cohort study of all adults admitted to ICU with a pneumonia diagnosis in Alberta, Canada between May 1, 2020, and October 31, 2020. At ICU admission patients were routinely assessed for frailty using the Clinical Frailty Scale (CFS). Frailty was defined as a CFS score ≥5. Primary outcomes were pre-admission frailty prevalence and hospital mortality.
Results:
The cohort (n=521) prevalence of frailty was 34.2% (n=178), mean (SD) age was 58.8 (14.9) years, APACHE II 22.8 (8.0), and 39.5% (n=206) were female. COVID-19 pneumonia was diagnosed in (19.0%; n=99) admissions; pre-admission frailty was present in 20.2% (n=20) vs. 79.8% (n=79) non-frail (p<.001). Among ICU patients admitted with COVID-19, hospital mortality in frail patients was 35.4% (n=63) vs. 14.0% (n=48) in non-frail (p<.001).
Conclusion:
Pre-admission frailty was present in 20.2% of COVID-19 ICU admissions and was associated with higher risk of hospital mortality. Frailty assessment may yield valuable prognostic information when considering COVID-19 ICU admission; however, further study is needed to identify effect on patient-centred outcomes in this heterogeneous population.
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