Anterior MI

This is part of: Myocardial Infarction

ECG-characteristics:[1]

ST-elevation in leads V1-V6, I and aVL. Maximum elevation in V3, maximal depression in III
later: pathological Q-wave in the precordial leads V2 to V4-V5.

Anterolateral infarct caused by occlusion of the LAD.

The Left Anterior Descending (LAD) coronary artery is the most important coronary artery. On this mercatorprojection of the heart, the grey area is supplied by blood by the LAD and is at risk if this artery occludes.

Anterior MI can involve the anterior part of the heart and a part of the ventricular septum. Is supplied by blood by the LAD. Can lead to a cardiac aneurysm if not treated timely.

Examples

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  A typical example of an acute anterior wall infarction. ST elevation in leads I, AVL and V2-V5. Reciprocal depressions in the inferior leads (II,III,AVF)

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  Acute MI with proximal LAD occlusion

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  Large acute MI with LAD occlusion

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  Acute MI with LAD occlusion

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  A 2 weeks old anterior infarction with Q waves in V2-V4 and persisting ST elevation, a sign of formation of a cardiac aneurysm.

References

1. Wung SF and Kahn DY. A quantitative evaluation of ST-segment changes on the 18-lead electrocardiogram during acute coronary occlusions. J Electrocardiol. 2006 Jul;39(3):275-81. DOI:10.1016/j.jelectrocard.2005.10.007 |