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Prolonged QRS duration (>0.10 sec in child under 16 years ; > 0.12 sec
over 16 years)
rsR' pattern in right chest leads (V3R , V4R , V1) with initial (0.04 sec)
rapid deflection and terminal (0.06-0.08 sec) slow deflection
Major deflection in leads II, III, aVF is positive
No Q wave in leads I, aVL
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Right ventricular hypertrophy (in right ventricular hypertrophy, terminal
deflection is rapid)
Wolff Parkinson White syndrome
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