[Comparison between classical ECG and ST mapping].

Area of Science:

• Cardiology
• Medical Diagnostics
• Electrocardiography

Background:

• Chronic ischemic heart disease diagnosis relies on clinical evaluation, ECG, and coronarography.
• Classical ECG methods may have limitations in detecting subtle repolarization disturbances and localized myocardial issues.

Purpose of the Study:

• To compare the diagnostic efficacy of ST-mapping against the classical electrocardiogram (ECG) in patients with chronic ischemic heart disease.
• To assess the ability of ST-mapping to identify repolarization abnormalities and myocardial lesions more accurately.

Main Methods:

• Comparison of findings from classical ECG (resting and post-exercise) with ST-mapping in a cohort of chronic ischemic heart disease patients.
• Inclusion of diagnoses confirmed by clinic, ECG, coronarography, and myocardial infarction history.
• Analysis of repolarization disturbance maxima, their location changes under load, and ST-mapping surface area sums.

Main Results:

• ST-mapping provided increased diagnostic evidence in 32% of cases.
• 100% correspondence was observed for definitively normal and pathological findings.
• ST-mapping demonstrated higher correlation with disease severity, better differentiation of severity degrees, and more precise pre-phase judgment than standard ECG.

Conclusions:

• ST-mapping offers superior diagnostic capabilities for chronic ischemic heart disease compared to classical ECG.
• It enhances the detection of localized repolarization disturbances and improves the localization of myocardial lesions, particularly in dorsal/caudal regions.
• ST-mapping facilitates a more accurate assessment of disease severity and progression.