Figure 94-27

ECG from a 17-year-old patient who had right ventricular enlargement (pressure overloading in type) due to severe pulmonic stenosis. Note extreme right axis deviation, overall high voltage, and qR complexes in V1 without an incomplete RBBB pattern.

(Lemberg, L. and others: Vector cardiography,2nd ed. New York, Appleton-Century-Crofts,1975).