A 12-lead ECG that reveals slight ST segment elevation; Q waves in leads II, III, and aVF; and ST elevation in V1 and V2 most indicate which of the following?
A) The patient is experiencing myocardial ischemia in her inferior wall that is extending into the septum.
B) The patient is experiencing myocardial injury in her lateral wall.
C) The patient has had a myocardial infarction in her inferior wall and is experiencing ischemia extending into the right ventricle.
D) The patient is experiencing ischemia and injury in her left ventricle and septum.

Question

Quizplus · Accepted Answer

The presence of Q waves in leads II, III, and aVF indicates a previous myocardial infarction in the inferior wall of the heart. ST segment elevation in V1 and V2 suggests associated right ventricular involvement. The slight ST segment elevation suggests ongoing ischemia. Therefore, the patient has had a myocardial infarction in her inferior wall and is experiencing ischemia extending into the right ventricle.

A 12-Lead ECG That Reveals Slight ST Segment Elevation; Q