Inferior MI
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This is part of: Myocardial Infarction |
ST elevation in II, III and aVF

This part of the heart muscle lies on the diaphragm and is supplied of blood bij the right coronary artery (RCA) in 80% of patients. In the remaing 20% the inferior wall is supplied by the ramus circumflexus(RCX).
An occlusion of the RCA can be distinguished of a RCX occulusion on the ECG:Zimetbaum
- Distal RCA occlusion (sens 90%, spec 71%)
- ST segment elevation in III higher than ST segment elevation in II ("the highest elevation points at the culprit")and
- ST segment depression in I, AVL, or both (>1 mm)
- Proximal RCA occlusion (sens 79%, spec 100%)
- Additional ST segment elevation in V1, V4R or both
- RCX occlusion (sens 83%, spec 96%)
- ST segment elevation in I, AVL, V5, and V6 and
- ST segment depression in V1, V2, and V3
Examples
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A typical example of an inferior wall infarction.]]
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Inferior-posterior MI due to RCA occlusion
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Inferior MI due to RCA occlusion
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Inferior MI due to RCX occlusion
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Posterior-lateral MI due to RCX occlusion
References
<biblio>
- Zimetbaum pmid=12621138
</biblio>