Interval A

The A interval is an important parameter in the diagnosis of heart disease. It reflects the time during which excitation is transferred from the atria to the atrioventricular bundle. This can be useful in identifying various pathologies, such as arrhythmias, heart blocks and others.

The A interval is measured based on data obtained from intracavitary electrographic examination of the heart. The cardiologist analyzes the information received from the patient and determines the time required for the transfer of excitation from the atria to the ventricles.

A change in the A interval may indicate the presence of various heart diseases, such as cardiac arrhythmias, coronary heart disease, inflammatory heart diseases, etc. For example, with coronary heart disease, the A interval may be increased, which indicates a slowdown in the transmission of excitation.

Thus, the A interval is an important indicator in the diagnosis of many heart diseases and can be used to identify and treat various pathologies.



The A interval is an important parameter for assessing the electrical activity of the myocardium and is of great importance for the diagnosis and treatment of various heart diseases. In this article we will look at what the A interval is, how to measure it, and how it is related to heart disease.

Interval A is a segment of the intraband electrogram of the heart (VEPG), reflecting the time of passage of excitation