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VT에서 초기전도속도 지연의 증거

R > 30 ms, nadir S > 60 or 70 ms in V1 or V2 (in LBBB pattern)
RS interval > 100ms in precordial leads
q > 40 ms, Vi/Vt > 1 in aVR
R wave peak time > 40 or 50 ms in Lead II
RS/QRS duration ratio > 0.41 in V6 (in RBBB pattern)