Identifying Comorbid Subtypes of Patients With Acute Respiratory Failure.
Kelly M Potter, Heather Dunn, Anna Krupp and 4 others
PMID 37391366WHAT IT FOUND
Six distinct patient subtypes were identified among acute respiratory failure survivors using early ICU data.
Patients with obesity and severe kidney impairment had the worst functional disability at discharge, while awake and stable patients had the best mobility and lowest impairment.
Key findings
01Patients classified as having obesity and severe kidney impairment (Class 4) had significantly more severe functional impairment at hospital discharge compared to typical respiratory failure, acute respiratory demands, and awake/stable classes.
02Patients who were awake and stable on admission (Class 3) achieved the highest rates of out-of-bed mobility and walking in the ICU, and had the least functional impairment at discharge.
03Subtypes were identified using electronic health record data available within the first seven days of ICU admission, allowing for early risk stratification.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for RNs
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What it does not show
The study was retrospective and single-center, lacking external validation. Electronic health record data may contain inaccuracies. The study did not measure pre-existing functional status or in-hospital delirium, which are important predictors of post-ICU disability. Only survivors were analyzed, so findings do not apply to patients who died during hospitalization. Functional disability was measured only at hospital discharge, not at later time points when recovery trajectories may differ.
Declared interests
The paper reports research support from the National Institutes of Health (Extramural) and non-U.S. Government sources. No specific commercial conflicts of interest were declared in the provided text.
The easy way to misread this
Do not assume these subtypes are ready for clinical use as a diagnostic tool. The classification method is hypothesis-generating and lacks external validation. Furthermore, the study shows association, not causation: identifying a patient as 'Class 4' does not prove that specific interventions will improve their outcome, only that they are at higher risk for disability.