[Diagnosis of conditions following myocardial infarct using complex analysis of electrical cardiac fields]

In 22 patients with ischaemic heart disease and conditions after infarction and angina pectoris a coronarographic examination was made as well as other auxiliary examinations incl. a complex analysis of the electrical cardiac field (KAESP) (23), using a Cardiac apparatus (manufacturer ZPA Cakovice). Using the KAESP method fibroses in the heart muscle were found in all 22 patients, while a classical electrocardiogram revealed them only in 12 patients (54.5%). Post-infarction fibrous changes on the inferior cardiac wall were detected by ECG in 10 patients, KAESP revealed this localization of changes in 17 patients. The difference was particularly marked as regards localization on the anterior cardiac wall, according to ECG it was in 2 patients, according to KAESP in 17 patients. The authors investigated also on isopotential repolarization maps focal changes caused by cardiac ischaemia associated with organic affection of the appropriate coronary artery as revealed by coronarography. Identical sites were proved in 18 patients by the two methods, i. e. in 81.8%. In the discussion the authors analyse the causes which influence the accuracy of assessment of the coronary artery in KAESP. In KAESP in addition to isopotential maps also other maps were used such as isointegral, iso-areal, asynchronic potential maxima and minima, isochronic maps, maps of negative isodivergencies, profile sections etc. (20).