ANSWER :PAEDIATRIC MCQ 9:Regarding an atrioventricular septal defect (AVSD) are



9) The following statements regarding an atrioventricular septal defect (AVSD) are


AVSDs account for about 2% of all congenital heart disease. Children with Down's syndrome
only account for about 30% of all AVSDs. Heart failure occurs early and requires aggressive
medical treatment. Recurrent chest infections are common. Surgical intervention is essential
for long-term survival. An ECG shows left anterior hemi block (superior QRS axis), a QRS axis
between -40 degrees and -150 degrees. RVH or RBBB is present in all patients and left
ventricular hypertrophy may occur. First-degree atrioventricular block with a prolonged PR
interval is also common.


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