Body surface area as a prognostic marker in chronic heart failure patients: results from the Heart Failure Registry of the Heart Failure Association of the European Society of Cardiology

Aims The ‘obesity paradox’ is consistently observed in patients with heart failure (HF). We investigated the relationship of body surface area (BSA) to mortality and hospitalizations in patients with chronic HF. Methods and results Data from the outpatient cohort of the observational, prospective, Heart Failure Long‐Term Registry of the Heart Failure Association of the European Society of Cardiology was analysed in order to evaluate the prognostic significance of BSA in chronic HF. A total of 9104 chronic HF patients (age 64.8 ± 13.4 years; 71.6% males) were enrolled. Mortality during 1‐year follow‐up was observed in 718 of 8875 (8.1%) patients. A progressive, inverse relationship between all‐cause mortality and BSA levels was observed; the adjusted hazard ratio (HR) for 1‐year mortality was 1.823 [95% confidence interval (CI) 1.398–2.376], P < 0.001 for the lowest quartile of BSA 2.07 m2). For each increase of 0.1 m2 in BSA, an adjusted HR of 0.908 (95% CI 0.870–0.948), P < 0.001 for mortality was calculated. HF hospitalizations were not associated with BSA subgroup distribution. In both genders, subjects within the lowest BSA quartile (males