Predictors for Developing Acute Decompensated Heart Failure During Hospitalization

1Cleveland Clinic Foundation, Cleveland, OH

Meeting: Hospital Medicine 2014, March 24-27, Las Vegas, Nev.

Abstract number: 99

Background:

Acute decompensated heart failure (ADHF) that develops during hospitalization is a potentially preventable problem that has not been well studied. A significant proportion of ADHF cases during hospitalization has been attributed to intravenous fluid hydration(25.5% in one study). Our purpose is to estimate the incidence of ADHF that develop during hospitalization in hospitalized medical patients and to identify possible predictors of this complication.

Methods:

We assembled a retrospective cohort of 1435 patients admitted to regular nursing floor general internal medicine beds in a tertiary care center in the period June 1st‐August 31st, 2013. The incidence of acute congestive heart failure (ADHF) that developed during hospitalization (not on admission) was calculated. Based on the calculated incidence, the outcome was considered rare and therefore a nested case control study was constructed. Seven cases were compared to twenty‐eight controls randomly selected from the cohort.

Results:

The incidence of ADHF that developed during hospitalization was 7/1435 (0.49%) of hospital admissions in our study. Six out of the seven ADHF cases were clinically attributed to intravenous fluid (IVF) hydration and one case was attributed to holding diuretics on admission. In the nested case control study, summary measures of pertinent baseline characteristics were calculated (Table 1). Univariate logistic regression analysis was used to evaluate the associations between ADHF and possible predictors prior to building a multivariate logistic regression model that included gender, history of coronary artery disease (CAD), history of CHF and total amount of IVF in liters. In the multivariate logistic regression model, ADHF during hospitalization was found to be significantly associated with prior history of CHF [OR 43.6 (2.18‐872.19),p=0.013]. Gender, history of CAD, and total amount of IVF were not significantly independently associated with ADHF during hospitalization.

Conclusions:

Prior history of congestive heart failure is a strong predictor of ADHF during hospitalization. Other factors such as age, gender, creatinine (Cr) on admission, history of CAD, history of hypertension (HTN), total amount of IVF, or average IVF infusion rate were not found to be associated with ADHF during hospitalization. Further, larger studies are needed to help further identify patients at risk of developing ADHF during hospitalization in order to institute prevention measures.

Table. mean and standard deviation (SD)



Cases (n=7) Controls(n=28)
Age(SD)years 70.7(12.2) 65.9 (15.6)
Gender(%Male) 85.7% 42.9%
Race(%White) 42.9% 39.3%
History of CAD 57.14% 25.00%
History of HTN 14.3% 17.8%
History of CHF 71.4% 7.1%
History of diabetes mellitus 42.9% 46.3%
History/current Atrial fibrillation 42.9% 46.4%
Creatinine(SD) mg/ml 1.56 (0.55) 1.8 (2.33)
IVF>1liter 85.7% 39.3%
IVF total in liters(SD) 4.84(5.59) 2.13 (2.99)
IVF average rate ml/hr(SD) 265.03(216.37) 214.06 (304.86)

To cite this abstract:

Ayache M. Predictors for Developing Acute Decompensated Heart Failure During Hospitalization. Abstract published at Hospital Medicine 2014, March 24-27, Las Vegas, Nev. Abstract 99. Journal of Hospital Medicine. 2014; 9 (suppl 2). https://www.shmabstracts.com/abstract/predictors-for-developing-acute-decompensated-heart-failure-during-hospitalization/. Accessed November 17, 2019.

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