Prognostic influence of prior chronic obstructive pulmonary disease in patients admitted for their first episode of acute heart failure
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Chronic obstructive pulmonary disease (COPD) is a frequent comorbidity in heart failure (HF) patients. Whether a prior COPD diagnosis influences patients’ prognosis in early stages of HF is unknown. We reviewed patients > 50 years old admitted because of a first episode of acute HF. We divided the sample into two groups according to the existence of a prior diagnosis of COPD. We used regression analysis to identify the baseline patients’ characteristics associated with the presence of COPD, and Cox mortality analysis to identify baseline and discharge data related to higher risk of a combined outcome of 1-year all-cause readmission or mortality. Finally, 985 patients were included in the analysis; 212 (21.5%) with a prior diagnosis of COPD. Baseline characteristics were similar between both groups except for a much higher prevalence of male gender, higher number of chronic therapies, and lower prevalence of atrial fibrillation among COPD patients. The combined primary outcome is significantly more prevalent in COPD patients (68.4 vs. 59.8%, p = 0.022). Cox analysis identified this prior diagnosis of COPD (HR 1.282, 95% CI 1.063–1.547; p = 0.001) as an independent risk factor for 1-year readmission and mortality, together with older age, higher admission creatinine and potassium values, and a higher number of chronic therapies. Our study confirms that in a “real-life” cohort of elderly patients experiencing a first episode of acute HF, the presence of a prior diagnosis of COPD is common, and confers a higher risk of adverse outcomes (death or readmission) during the year following discharge.
KeywordsHeart failure Chronic obstructive pulmonary disease Hospitalizations Readmissions Mortality
This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Statement of human and animal rights
This article does not contain any studies with animals performed by any of the authors. The ethics committee of the Bellvitge University Hospital approved the overall protocol.
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