Of the large number of congenital heart defects, the leading position is occupied by congenital septal defects, among which the second place in frequency of occurrence is occupied by an isolated atrial septal defect (ASD), with a prevalence of about 7% among all congenital heart defects. The most common intercurrent pathology is pneumonia caused by hypervolemia of the small circle.  The study of the features of the course of pneumonia in young children with ASD showed that lung tissue damage was associated with hemodynamic disorders that influenced the course and outcome of pneumonia.

Pneumonia, atrial septal defect, congenital heart disease, heart failure, electrocardiography, X-ray.

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