Background & Aim: Improving the quality of life is generally one of the main goals in caring of the patients with congestive heart failure, so identifying factors affecting it is significantly important. This study was conducted to determining the quality of life of these patients.

Methods & Materials: 184 of patients congestive heart failure who referred to clinics of Tehran University of Medical Sciences were chosen by goal-based sampling method. Data collection was done by questionnaire, which was consisted of 4 parts: individual factors, factors related to disease, patient knowledge and quality of life. Data analysis was done by SPSS computerized software.

Results: Most of the researching samples in fallowing dimensions had undesirable quality of life: physical activity dimension (44.6%), Psychological dimension (47.3%), Economical/Social dimension (49.5%), total Quality of life (46.7%) and had fairly desirable quality of life in general health dimension (42.4%). There is a significant statistical relationship between quality of life and these variables: job, Education level, care giver, the intensity of illness, duration of illness period, number of refers to physician and hospitalization, duration of combination of hypertension with CHF, presence of edema, high cholesterol, characteristics of disease, the intensity of fatigue at the time of research and in last 1 month ago (p=0.000) and the kinds of using drugs (p=0.039), but there is not a significant statistical relationship between quality of life and these variable: age, gender, Marriage status, Number of people living together, Having therapeutic insurance, Smoking, Body Mass Index: BMI presence of Myocardial Infarction or other diseases and patient knowledge.

Conclusion: Congestive heart failure has a negative affect on quality of life. So assessing the quality of life and promoting it is viewed as one of the duties of nurses and also as one of the major caring goals.