In my post about STEMI and AV block, I outline the reason why primarily inferior STEMIs cause AV block. The reason is common blood supply, specifically the Right Coronary Artery (RCA), which supplies blood to the inferior wall of the left ventricle (in 85% of the population) and to the AV node (in 90% of the population).

Can you think of any other structures that the RCA perfuses? Because these structures could also undergo ischaemia if there’s RCA occlusion (depending on the level of the occlusion, of course: proximal or distal). Is it possible to detect ischemia in any of these structures by taking a different ECG recording with a different lead placement? If yes, how?

Food for thought for a post to follow… In the meantime, if you have any ideas, make sure to comment below.

Thank you!