Mrs.Campho had a previous inferior MI about 20 years ago.What would you expect to see on her EKG that would be consistent with her old inferior MI?
A)ST elevation in II,III,and AVF
B)ST depression in II,III,and AVF
C)Significant Q wave in II,III,and AVF
D)Reciprocal ST depression in the anterior leads

Question

Quizplus · Accepted Answer

A significant Q wave in leads II, III, and AVF is the most characteristic finding of an old inferior MI. This is due to irreversible damage to the myocardium resulting in loss of electrical activity and Q wave formation. ST segment elevation or depression may be present acutely during an MI but typically resolve within days to weeks. Reciprocal ST depression in the anterior leads is a finding seen in acute inferior MI, not old MI.

MrsCampho Had a Previous Inferior MI About 20 Years Ago