The work presents the indications for the choice of methods of diagnostic and surgical treatment of acute cholecystitis in patients with decompensated cardiovascular diseases. When covering the possibil- ity of diagnostic methods, their specificity and sensitivity. detailed characteristics of such instrumental techniques as ultrasonography, magnetic resonance cholangiopancreatography, magnetic tomography, echocardiography, electrocardiography, diagnostic laparoscopy has been given. The role of specific bio- chemical markers of myocardial necrosis has been showed: kretinfosfokinaza, cardiac troponin-I. Pos- sible changes on the electrocardiogram in these patients with acute cholecystitis and reasons for their appearance have been described.