The stress related to patient’s stay in a hospital increases when it is necessary to perform a surgery. Therefore, the
study of the phenomenon of stress intensity in hospitalized patients has become an important issue for public health. Materialand Method. The study was conducted in University Hospital No. 1 in the cardiosurgery clinic. The study involved 58 patients whowere admitted as planned to the hospital. The study used a standardized questionnaire measuring intensity of the stress and also deepened interviews with patients about stress and anxiety felt before the surgery. Results. The greater the patient’s anxiety resulting from his state of health, the greater the intensity of stress in the preoperative period. This relationship is linear. The results of the study also made it possible to see intrapersonal factors (pain, illness, and suffering) and extrapersonal factors (anesthesia, surgery,and complications after surgery), which are causes of anxiety before surgery. Conclusion. The research showed high (negative) results of anxiety and stress associated with the disease, surgery, and complications after cardiac surgery. Active involvement in hospitalization elements, such as patient education before surgery, psychological support, and medical care organization taking
into account patient’s preferences, reduces the impact of stressors.