Bakit meron sanggol na lumalaki ang puso oh yung tinatawag daw na CPOP.

In children, the most common reason is some form of congenital heart defect. For example, a hole in the heart (or some other abnormality) may allow blood to shunt or recirculate back to the lungs. Examples of shunts include a ventricular septal defect, atrial septal defect, and patent ductus arteriosus. In all of these examples, a communication exists which allows blood to recirculate to the lungs. This ends up sending more blood than normal to the lungs; subsequently more blood returns to back to the heart. The heart subsequently enlarges because of the extra volume delivered to it. Some cases of enlarged hearts in children are caused by valve problems. Valves that don't open properly, or valves that leak can create an extra stress on the heart, resulting in enlargement. For example, many children with significant aortic regurgitation caused by a bicuspid aortic valve may develop enlargement of the left ventricle over time. This can be an indication for replacement of the valve.