Atrioventricular septal defect electrocardiogram

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

• 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

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