The aim of the study was to assess changes in images of corona discharges (ICD) in patients with cardiovascular diseases A corona discharge is an electrical discharge brought on by gases surrounding a conductor - animate or inanimate objects. Methods: The study population of 126 persons (81 men and 45 women) was divided into two groups: the study group consisted of 96 patients with coronary heart disease and the control group composed of 30 healthy persons. The study methods included recording of corona discharges of fingertips of both hands by using the Gas Discharge Visualization (GDV) Camera and analyzing changes in images of corona discharges dependent on conditions of medical examinations of patients, their frame of mind, age, gender, heart rate, blood pressure, serum potassium concentration, and the course of coronary heart disease. Results: Age, gender, temperature in examination rooms as well as frame of mind of the study population exerted a similar effect on ICD in both groups. Heart rate, blood pressure and the pattern of coronary heart disease exerted varied effects on the patients' ICD parameters in the study group. Conclusions: The analysis of changes in ICD may be a source of information about the effect of physiological and pathophysiological changes in the human health state, physical as well as mental.