Clinical efficacy of non-invasive evaluation of intra- and interatrial conduction in patients with ischemic heart disease

• Published in: Terapevtic̆eskii arhiv Vol. 71; no. 1; p. 34
• Main Authors: Shabrov, A V, Olesin, A I, Golub, Ia V, Golub, V I
• Format: Journal Article
• Language: Russian
• Published: Russia (Federation) 1999
• Subjects: Animals; Atrial Fibrillation - complications; Atrial Fibrillation - diagnostic imaging; Atrial Fibrillation - physiopathology; Disease Models, Animal; Dogs; Echocardiography; Electrocardiography; Feasibility Studies; Heart Atria - diagnostic imaging; Heart Atria - physiopathology; Heart Conduction System - diagnostic imaging; Heart Conduction System - physiopathology; Heart Septum - diagnostic imaging; Heart Septum - physiopathology; Humans; Myocardial Ischemia - complications; Myocardial Ischemia - diagnostic imaging; Myocardial Ischemia - physiopathology
• ISSN: 0040-3660

To try feasibility of non-invasive registration of intra- and interatrial conduction by means of simultaneous registration of echo-CG (in B and M modes) and ECG.
The time of intra- and interatrial conduction was measured at simultaneous registration of echo- CG (B and M modes) and ECG in standard lead II. The time of atrial conduction was registered in ms from the start of ECG wave "P" to beginning of echo-CG mechanical contractions. The results were compared to those obtained at the direct method (registration of atrial conduction by electrode fixed on the atrial myocardium).
The data by the two above methods showed high correlation (for intraatrial conduction r = 0.93, for the interatrial one r = 0.85). The study confirmed the leading role of end-diastolic volume of the left ventricle and/or uneven wave movement along the atria in development of supraventricular arrhythmia in coronary heart disease.
The proposed non-invasive method can find application for estimation of atrial conduction both in clinical practice and experiment. The time of exitation conduction through the atria measured by the new non-invasive method and the direct method is almost the same.