Answer
An enlarged Q wave is usually interpreted by clinicians as an indication of a myocardial infarction.
Work Step by Step
A Q wave is a negative deflection of the QRS complex. An abnormally large Q wave may be an indication of various heart abnormalities such as the three following deficits:
1. Myocardial infarction
2. Ventricular enlargement
3. Altered ventricular conduction