Atrioventricular septal defect electrocardiogram

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Electrocardiogram

Rhythm: normal sinus rhythm, PVCs 30%
PR interval: 1° AVB >50%
QRS axis: Moderate to extreme LAD; normal with atypical
QRS Configuration: rSr´ or rsR´
Atrial Enlargement: Possible LAE
Ventricular hypertrophy: Uncommon in partial; BVH in complete; RVH with Eisenmenger
Particularities: Inferoposteriorly displaced AVN

References

Overview