Huusko J, et al. - In this retrospective biobank and clinical registry study, researchers focused on patient features of the adult chronic heart failure (HF) population, as well as estimated the prevalence, incidence, healthcare resource utilization (HCRU), and death related to HF in Southwest Finland. The estimated HF incidence and prevalence were 3.2/1000 and 13.9/1000 inhabitants (n = 15,594), respectively, in 2013. Findings in the stratified analysis of HF patients (n = 8833, average ± SD age 77.1 ± 11.2) revealed the presence of HF with reduced ejection fraction (female 31.3%) in 1115 (12.6%) patients, HF with preserved ejection fraction (female 50.9%) in 1449 (16.4%), and unknown left ventricular ejection fraction (female 52.1%) in 6269 (71%) patients. Essential hypertension (58%), chronic elevated serum creatinine (57.3%), atrial fibrillation and flutter (55.1%), and chronic ischaemic heart disease (46.4%) were documented as the most commonly experienced co-morbidities. HF patients had high mortality rate and HCRU, which points to the severity of the disease and the economic and social burden on both patients and society.