I.А. Chaykovsky, V.V. Batushkin, L.S. Faynzilberg, А.V. Gema Relation of the parameters of intracardial hemodynamics and parameters of phase space ECG in patients with acute myocardial infarction under nitroglycerin test

The purpose of this work was to study the relation of basic parameters of intracardial hemodynamics and symmetry of the T wave of electrocardiogram in the phase space in patients with acute myocardial infarction.
Twenty one patient with acute transmural myocardial infarction (19 men, 2 women) were examined. All patients underwent simultaneously EchoCG and registration of phase space ECG. The index of symmetry of T-wave in
phase space was determined at initial state and after 2 and 5 min after sublingual nitroglycerin. The index of symmetry of the T wave in the phase space (ΒT) in patients with acute transmural myocardial infarction
decreased 2 minutes after nitroglycerin intake and increased above baseline values 5 min after nitroglycerin intake. There is a link between the mechanical function of the heart and T-wave symmetry of electrocardiogram
in phase space, i.e. improvement of myocardial contractility is combined with decreased symmetry of the T-wave, and worsening of contractility – with increased symmetry of the T-wave.

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