[Coronary reserve and myocardial function in unstable stenocardia].

A total of 168 patients admitted to the intensive care department with the diagnosis of unstable angina pectoris (UA), were investigated. Proceeding from the clinical criteria, the patients were divided into 2 groups: with primary (the 1st group) and progressive (the 2nd group) angina. The diagnosis was confirmed by the transesophageal pacing test (TEPT) performed in parallel with two-dimensional echocardiography. Positive TEPT was noted in 84% of the patients in the 2nd group and in 39% of the patients in the 1st group. The volume and expression of ischemia at the height of stimulation (ECTG findings) did not differ in both groups. Some patients with negative TEPT (in both groups) demonstrated an unfavorable time course of volumetric indices: an increase in end systolic and end diastolic volumes, a decrease in the ejection fraction. However, the diagnosis of CHD could not be excluded. Patients need further examination.