Association Between the Red Blood Cell Distribution Width-to-Albumin Ratio, Nursing Notes, and the Length of Hospital Stay in Iron Deficiency Anaemia Complicated With Congestive Heart Failure Patients.
Xiao-Fang Fang, Ya-Ping Xie, Yu-Qin Teng and 3 others
PMID 42447273WHAT IT FOUND
In patients with iron deficiency anaemia and heart failure, higher RDW-to-albumin ratio and nursing notes with more subjective language were each linked to longer hospital stay.
The two were separate markers, not a proven way to decide care.
Key findings
01Higher RAR was associated with 7 days or more in hospital (odds ratio 1.222, 95% CI 1.055–1.417).
02Higher scaled nursing-note subjectivity was associated with 7 days or more in hospital (odds ratio 1.450, 95% CI 1.068–1.970).
03High RAR plus high nursing-note subjectivity was associated with higher odds of 7 days or more in hospital than low RAR plus low subjectivity (odds ratio 2.063, 95% CI 1.290–3.298).
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The study was retrospective, so it shows association, not that RAR or nursing-note subjectivity caused longer stay or death. Patients were excluded if albumin was missing, and included patients were more critically ill than excluded, so results may not apply to less sick inpatients or outpatients. Heart failure subtype, ejection fraction, and NYHA class were not available, so findings may not apply equally to HFpEF or HFrEF. MIMIC-IV is a single intensive care database, so external validation is needed. Nursing-note subjectivity was scored by TextBlob, a general language tool not designed or validated for clinical decisions. Iron deficiency aetiology could not be reliably distinguished.
Declared interests
Supported by The Medical and Health Research Project of Zhejiang Province (No. 2025KY1039). The authors declare no conflicts of interest.
The easy way to misread this
Do not treat the RAR and nursing-note subjectivity flag as a validated bedside decision tool. The design is observational, the notes score was not clinically validated, and the authors state it should not guide care outside prospective validation.