Ventricular tachycardia unmasking anterior wall myocardial infarction in a patient with pre-existing left bundle branch block

Emergence of inferior Q‐waves during tachycardia

“… 1 Premature ventricular beats have long been shown to uncover pathologic Q‐waves after myocardial infarction that is otherwise not evident on the ECG. 2 One more recent report describes a patient with remote anterior wall myocardial infarction and left bundle branch block where anterior Q‐waves appeared during VT. 3 Subramany et al reported that inferior Q‐waves during WCT—without reference to SR ECG—are specific, but insensitive signs of VT. 4 …”