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The patent ductus arteriosus is a case in which the obstructed pulmonary artery keeps open immediately after birth, and pulmonary vascular resistance is decreased and aortic blood flow enters the pulmonary artery. Frequency is two times higher in girls than in boys and is well accompanied by rubella infection in early pregnancy. Patients with patent ductus arteriosus tend to have a high incidence in preterm infants as in this case, 10% of congenital heart disease is accompanied by patent ductus arteriosus. Symptoms are mild, almost asymptomatic, and heart murmurs may be detected with a stethoscope. If the patency of the ductus arteriosus is large, it may be accompanied by heart failure and growth retardation from infancy. Typical clinical findings include wide pulse pressure, leaping veins, and sustained mechanical heart murmurs at the left sternal level. In the case of neonatal or pulmonary arterial hypertension, only systolic noise may be heard. In the chest X-ray, the heart size i...

Basically, a therapeutic approach to the opening of the patent ductus begins with determining whether the progress is to be followed by ongoing observation or by active intervention. 2) severe hypertension in the left heart due to overload of the left heart, 3) reversible pulmonary hypertension in the left atrium, 4) reversible hypertension in the past, If endocarditis is present, intervention or surgical closure is recommended. After closure, symptoms are alleviated and irreversible pulmonary hypertension can be prevented from progressing.  The incidence of irreversible severe pulmonary arterial hypertension is a contraindication to closure, which increases the risk of the procedure, does not improve survival after the procedure, and is associated with pulmonary arterial hypertension, Because it is necessary for.  It is not easy to decide whether to open a small-sized patent ductus arteriosus. Experts advise that it is beneficial to perform procedures regardless of size i...