Coexisting morbidity burden in elderly hospitalized patients with and without heart failure.

INTRODUCTION: Aging, cardiovascular disease (CVD), and heart failure (HF) increase the coexisting morbidity (CM) burden. This study compared the contribution of HF with this increase in elderly patients hospitalized for CVD by comparing patients with and without HF. METHODS: Consecutive patients aged >65 years, hospitalized with CVD, were included (104 with and 100 without HF). The prevalence of 10 common CM (hypertension, coronary artery disease, atrial fibrillation, diabetes, dyslipidemia, anemia, chronic kidney disease, chronic obstructive pulmonary disease, sleep apnea, and cancer) was examined. The CM burden was assessed with the CM index (number of CM/patient) and multimorbidity (≥2 CM/patient). RESULTS: The CM index was significantly higher [5 (3-6) vs. 3 (2-4), p < 0.0001], whereas multimorbidity [94.2% vs. 86%, p = 0.06] marginally higher in CVD patients with HF than those without HF. Ordinal regression with test of proportional lines revealed that in CVD patients with HF, the odds for a high CM index were approximately 8 times higher compared with CVD patients without HF, given that age and LVEF were held constant. CONCLUSION: HF development was associated with a dramatic increase in the CM index in elderly patients with CVD who already have a high prevalence of multimorbidity.

Relative contribution of risk factors/co-morbidities to heart failure pathogenesis: interaction with ejection fraction.

AIMS: The relative impact of each individual coexisting morbidity on the pathogenesis of heart failure (HF) is incompletely understood. This study aimed to evaluate the prevalence of individual cardiac and non-cardiac coexisting morbidities both in the overall HF population and in the subgroup of HF patients with a single coexisting morbidity, stratified by left ventricular ejection fraction (LVEF) categories, as a measure of the relative contribution of each co-morbidity to the pathogenesis of HF. METHODS AND RESULTS: This is a prospective, observational study, in which unselected ambulatory patients with chronic HF visiting the HF clinic of a tertiary university hospital from January 2016 to January 2019 were classified according to baseline LVEF into three groups: (i) LVEF < 40%, (ii) LVEF = 40-49%, and (iii) LVEF ≥ 50% and then evaluated for various coexisting morbidities. Overall, 1064 patients (age 73.4 ± 12.1 years, male gender 57.7%, LVEF 43.6 ± 13.9, N-terminal pro-brain natriuretic peptide 2187 ± 710 ng/L, and estimated glomerular filtration rate 67.2 ± 25 mL/min/1.73 m2 ) were recruited in this study. Of these, 361 (33.9%) had an LVEF < 40%, 247 (23.2%) an LVEF = 40-49%, and 456 (42.9%) an LVEF ≥ 50%. There were 90 (8.5%) HF patients with a single coexisting morbidity, 33 (36.7%) with LVEF ≥ 50%, 27 (30.0%) with LVEF = 40-49%, and 30 (33.3%) with LVEF < 40%. Among these patients, those with LVEF ≥ 50% suffered mostly from hypertension (85.7%), whereas the second most common coexisting morbidity was atrial fibrillation (AF) (9.5%). HF patients with LVEF = 40-49% usually suffered from hypertension (35.7%), AF (28.6%), or myocardial infarction (MI) (21.4%). Finally, HF patients with LVEF < 40% usually suffered from MI (30.8%), AF (30.8%), or hypertension (15.4%). CONCLUSIONS: Hypertension is strongly associated with the development of HF with low, intermediate, or near-normal/normal LVEF whereas a history of MI or AF with HF with a low or an intermediate LVEF.