Anatomy - Inferoposterolateral infarction

Inferoposterolateral infarction may be caused by an occlusion in a dominant RCA or an occlusion in a dominant RCx. In most cases the culprit coronary artery is the RCx. In inferoposterolateral infarction secondary to RCx occlusion, the ischemia vector in the horizontal plane points to the posterolateral region of the left ventricle resulting in ST elevation in leads V5 and V6.


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