[Polarcardiographic diagnosis of an infarct of the anterior wall of the heart in its subacute and chronic stages].

One hundred and ten patients, with clinically confirmed acute myocardial infarction of the anterior wall in subacute and/or chronic stage were polarcardiographically examined. The polarcardiograms were recorded with e velocity of the record 100 mm/s by an original little analogue computer, designed at RIMT, Ministry of Public Health, connected to a 6-channel ECG apparatus, programmed for orthogonal Frank leads. The recorded curves of space magnitude (M), transversal magnitude (tm) and length were quantitatively analyzed for amplitudes and time intervals. The results obtained were compared with the data from the polarcardiographic studies on a control group of 114 healthy subjects. Positive ECG criteria for the diagnosis of myocardial infarction were found in 82 patients (74.54 per cent). Polarcardiographic criteria for myocardial infarction of the anterior wall (11-16) were found in another 28 patients (25.45%). Thus, myocardial infarction was polarcardiographically diagnosed in 108 patients (98.18%). Infarction criteria were polarcardiographically established in three healthy subjects, i.e. 2.63 per cent false positive diagnoses. The polarcardiography is a valuable additional method to the conventional ECG in making the diagnosis of myocardial infarction of the anterior wall in subacute and/or chronic stage, easily applicable in the cardiological practice.