Abstract
Objective
To derive a risk score to predict in-hospital mortality for very old patients with decompensated chronic heart failure (DCHF).
Methodology
Retrospective cohort study that included patients ≥ 80 years admitted to a Geriatric Acute Care Unit with DCHF between January 2012 and December 2014. We analyzed 70 candidate risk factors and in-hospital mortality. We derived a risk model using multivariate logistic regression model and constructed a scale for scoring risk. We used bootstrapping techniques for the internal validation.
Results
We included 629 patients with mean age of 90 (SD5) years, 470 (73.1%) being women. Eighty-six (13.7%) patients died during the hospitalization. Factors included in the final risk model were NYHA class III–IV, severe functional dependence (Katz activities of daily living index < 2), infection as cause of exacerbation of heart failure, number of medications ≥ 8, albumin < 3 mg/dL, glomerular filtration rate < 60 mL/min, level of potassium in blood > 5.5 mEq/L and red blood cell distribution width (RDW) > 17%. In-hospital mortality in risk groups was 3.0, 4.6, 9.5, 15.1 and 36.3%, respectively. The area under ROC curve risk for score after bootstrapping was 0.77 (95%: CI 0.70–0.83).
Conclusion
This risk score could be useful for stratifying risk for in-hospital mortality among very old patients admitted to hospital for DCHF.
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Acknowledgements
Sponsor’s role: This study was partially supported by grants from the Instituto de Salud Carlos III supported with funds from the Spanish Ministry of Health and FEDER (PI15/00773).
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The present study was approved by the Ethical and Clinical Investigation Committee (CEIC) of the hospital in accordance with ethical principles of the Declaration of Helsinki.
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Marttini Abarca, J., Fernández Arana, L., Martín-Sánchez, F.J. et al. In-hospital mortality risk score for very old patients hospitalized with decompensated chronic heart failure. Eur Geriatr Med 9, 61–69 (2018). https://doi.org/10.1007/s41999-017-0008-0
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DOI: https://doi.org/10.1007/s41999-017-0008-0