For the old old patients (pts) with congestive heart failure the use of combinations of drugs can easily lead to a sort of "evidence-based" polypragmasie. We analyzed a lot of 125 pts with congestive heart failure older than 85 years (mean 87.43 +/- 2.54 years), 53.6% male, enrolled consecutively between January 2011 - December 2012. We have compared some features of two subgroups: survivors' (S = 112 pts) vs deceased (D = 13 pts). The old old patients group included patients with length of hospitalization of 8.10+/-3.98 days and the rate of rehospitalization 6.4% and the death rate 10.4%. Number of drugs taken was 5.53+/-1.86 in S group vs 5.85+/-1.86 in D group (p = 0.560) and the length-of-stay was 8.18+/-3.79 in S group vs 7.38+/-5.53 in D group (p = 0.494). There were significant differences between group S vs D in: NYHA class, atrial fibrillation, hemoglobin level, blood urea nitrogen, and serum sodium. The number of drugs given to old old patients has not proven to reduce the length of stay, the rate of death and rehospitalization. Hyponatremia, anemia, increased BNP, blood urea nitrogen and serum uric acid are associated with increased mortality of old old patients.