Patients and Methods: We conducted an observational study of all patients first time admitted to the Cardiology Department of Nhan Dan Gia Dinh Hospital for heart failure during the period from Dec 1st, 2009 to Jan 31st, 2010, and investigated the severity of heart failure (based on NYHA classification, and ejection fraction), prevalence of kidney function decline (determined by estimated glomerular filtration rate - eGFR, and classified based on KDOQI guidelines 2002) and anemia (defined based on KDOQI guidelines 2002) in these patients and some related factors such as age, gender, comorbidities, serum NT-ProBNP, and drugs used.