[Value of the end part of the ECG ventricular complex during exercise test in patients with acquired heart defects].
The dynamics of the end part of the ECG ventricular complex (ST--T) has been studied during multistage treadmill test in 305 patients with a rheumatic heart defect with intact coronary circulation and in 52 healthy subjects. In 20 per cent of the patients analysis of the ECG at rest is not sufficient for interpreting ST--T since during the test the ST--T changes can be increased (more commonly in mitral defect) or the complex can be normalized (more often in aortic defect). The relationship between the positive and negative ST--T dynamics with preserved central hemodynamics in the treadmill test has been proved. Assumptions have been advanced that explain the ST--T changes in physical exercise in patients with heart defects; the degree of the preserved myocardial function can be evaluated according to the ECG dynamics in the treadmill test.
V E
VE
Kudriashev
T I
TI
Kulagina
T N
TN
Dobrovo'lskaia
D000328:Adult; D004562:Electrocardiography; D005080:Exercise Test; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D009200:Myocardial Contraction; D005082:Physical Exertion; D012214:Rheumatic Heart Disease / Q000175:diagnosis* / Q000503:physiopathology
Znachenie konechnoĭ chasti zheludochkovogo kompleksa EKG pri fizicheskikh nagruzkakh u bo'lnykh s priobretennymi porokami serdtsa.