Pathologic Q waves
Pathologic Q waves
Pathologic Q waves commonly seen in all Except
[A] Ostium primum ASD
[B] ALCAPA
[C] Myocardial infarction
[D] Left ventricular volume overload
Pathologic Q waves
Definition of a pathologic Q wave
Any Q-wave in leads V2–V3 ≥ 0.02 s or QS complex in leads V2 and V3
Q-wave ≥ 0.03 s and > 0.1 mV deep or QS complex in leads I, II, aVL, aVF, or V4–V6 in any two leads of a contiguous lead grouping (I, aVL,V6; V4–V6; II, III, and aVF)
R-wave ≥ 0.04 s in V1–V2 and R/S ≥ 1 with a concordant positive T-wave in the absence of a conduction defect
Gerbode defect
Gerbode defect is defined as abnormal shunting between the left ventricle and right atrium resulting from either a congenital defect or prior cardiac insults
