Clinical application of body surface potential mapping in patients with coronary artery disease
Tseng, Y.Z.; Tseng, C.D.; Lo, H.M.; Hsu, K.L.; Chiang, F.T.; Wu, T.L.
Journal of the Formosan Medical Association 87(5): 514-524
1988
ISSN/ISBN: 0371-7682 PMID: 3418311 Document Number: 310759
Body surface potential maps (BSPMs) were studied in 98 consecutive cases with angina pectoris and coronary angiographically proved coronary artery disease (CAD). An abnormal distribution of negative potential during ventricular depolarization was found in 96 out of 98 cases (97.9%). However, evidence in loss of myocardial electromotive force was observed in 58.2% and 84.7% of these cases, respectively, using electrocardiogram and vectorcardiogram. The abnormal negative potential appeared mainly on the middle or right portion of the anterior thorax in cases with right coronary artery lesions, on the left-superior portion of the anterior thorax in those cases with left circumflex coronary artery lesions, and on the middle or left portion of the anterior thorax in those cases with left anterior descending coronary artery lesions. In patients with multi-vessel disease, the abnormal potential showed a combined pattern of individual vessel lesions. The abnormal distribution of potential minimum also displayed a similar pattern as that of negative potential. Additionally, a close correlation was found between the severity of CAD and the BSPM findings in terms of the extent of abnormal negative potential, the duration of abnormal negative potential and the duration of abnormal potential minimum. The BSPM is thus of great applicable significance both in the detection of abnormal electric activity of CAD and in the assessment of CAD in terms of location, extent and severity.