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Does left anterior descending coronary artery acute occlusion proximal to the first septal perforator counteract ST elevation in leads V5 and V6 ?
Ist Teil von
Journal of electrocardiology, 2009, Vol.42 (1), p.52-57
Ort / Verlag
United States
Erscheinungsjahr
2009
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Abstract The mechanisms of the so-called extensive anterior acute myocardial infarction including ST-segment elevation in leads V1 (ST↑V1 ) through V6 (ST↑V6 ) are not clear. This report is focused on the electrocardiographic (ECG) changes in 2 cases with anterior AMI. In case 1, the ECG showed complete right bundle-branch block, left anterior fascicular block, and ST↑V2 through ST↑V6 on admission, but 5 minutes later, after the disappearance of complete right bundle-branch block and left anterior fascicular block, a striking ST depression in V6 (ST↓V6 ) and ST↑V1 occurred. In case 2, the ECG showed ST↑V1 through ST↑V6 . The physiopathologic mechanisms of these ECG findings are discussed.