IV1V2V6

IV1V2V6

RBBB, typical

Patient. 50 year old male was admitted for post operative bleeding from recent tonsilectomy. He has history of hyperlipidemia and family history for heart disease. Patient has a negative stress radionuclide imaging study 7 months ago.

Criteria for typical RBBB   1. QRS duration is > 120 msec.   2. Broad, notched R wave (rsR', RsR', rSR', rSr', rsr') in right precordial leads V1 and V2.   3. Wide S wave in lateral leads V5, V6 (with leads placement far lateral enough), lead I.   4. R wave (in lead I and V6) should be narrow (normal). If it is wide, there is other cause such as intraventricular conduction defect. Other abnormalities:   5. T Wave inversion and ST deprission in ritht precordial leads V1, V2, (V3).

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