The purpose of the study was to assess the quality of life and opinions of heart transplant candidates about transplantation and to evaluate some psychological aspects of anticipation of the procedure. The study comprised 49 patients from the Department of Cardiac and Vascular Surgery according to a list of potential candidates from January 1991. The special questionnaire prepared by the authors was applied in the study. The main topics were: severity and treatment of heart disease, method of informing about necessity of operation and basics of transplantation, factors contributing to the ultimate decision, opinions about problems of donors and psychological aspects of disease and transplantation, especially anxiety and fear. 39 answers (34 men, 5 woman, mean age--49.6 years) were received, including 10 reports of patient's death. Respondents evaluated their compensation of illness as bad or average nearly in equal proportions, 48.3% and 51.7% respectively. They were treated in the intensive care units on average 2.6 times a year. 96.6% assessed highly the method of informing about heart transplantation, consisting of a private conversation with a physician. A similar proportion of respondents (93.1%) began to show concern about problems associated with this procedure. Up to 77.8% declared the desire of increasing their knowledge on that score emphasizing the significance of information coming from physicians. The majority of respondents were interested in postoperative management--but 40.4% stated that they did not know anything about it. 58.6% consent immediately after transplantation had been proposed by the physician.(ABSTRACT TRUNCATED AT 250 WORDS)