RAJIV GANDHI UNIVERSITY OF HEALTH SCIENCES

normal is < 0.04 seconds in I, aVL and V1-6 / < 0.025 in II and < 0.030 in aVF. small “septal Q’s” commonly seen in lateral leads (I, aVL, V4, V5, or V6) mid-septal depolarization (from LBB) moving L to R. medium to large Q waves may be normal in aVR if not lead placement. Q in V2 could be lead placement, LVH, LBB, pulmonary disease ................
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