Answer: Paediatric Electrocardiogram for the week of Thursday November 23rd 2006

Paediatric Electrocardiogram of the Week

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Answer for: November 23rd
Low right atrial rhythm. Heart rate 64. QRS axis -50
PR 200ms. QRS 90ms. QT/QTc 340/420
Superior left axis deviation
1st degree AV block
Dominant posterior voltages predominantly in right chest leads.
Small voltages in the left lateral chest leads

Comment: November 23rd 2006
This girl was born with Tricuspid Atresia and underwent a classic Fontan procedure at 3 years of age.
She has a relatively slow, low right atrial rhythm but has not yet developed any atrial arrhythmias which are common following this procedure.
Despite the low voltages in the left lateral leads, she has a normal sized left ventricle with good contractility.