Abstract:
Introduction.The complete atrioventricular canal
(CAVC) is a rare complex heart malformation, it
constitutes 4-5% of the total heart abnormalities
and in 30-60% it is associated with Down
syndrome. Arrhythmias are often associated with
CAVC. The presence of the genetic syndrome
conditions the surgical correction in the first
months of life.Purpose.Identifying rhythm and conduction
disorders in a child with CAVC.Material and methods.Anamnestic, clinical and paraclinical data were
taken from the medical record. The patient was investigated by
electrocardiography (ECG), M, B and color Doppler echocardiography
(EcoCg), cardiovascular radiology. Literature on similar cases has been
studied. Results.The 8-month-old girl, with CAVC and associated
Down syndrome, was hospitalized in the pediatric
cardiology service for evaluation after cardiac surgery. The
complexity of the abnormality and the association of Down
syndrome determined the radical correction to be performed
at the age of 6 months, in a single stage, in accordance with
the recommendations of the current guidelines.
Postoperatively, after 2 months, a relatively good result of
the operation was confirmed. On standard ECG, a sinus
rhythm and intraventricular combined conduction disorders
were found, such as complete right bundle branch block and
left anterior fascicular block of the His bundle, clinically
insignificant arrhythmia.Conclusions.Analyzing the case, we deduced that the conduction disorders
detected on the standard ECG are arrhythmic complications after corrective
surgery, with damage to the transient intraventricular conduction system,
with minor clinical impact.