Patient's question:
The child just born doesn't know what's wrong, there are always red spots on their body, and they are spitting up milk. Please ask if patent ductus arteriosus in children is seriousDoctor's answer:
After the fetus is born, pulmonary blood flow increases, and the amount of blood returning to the left atrium also increases. The pressure in the left atrium exceeds that in the right atrium, causing the first atrial septum to adhere closely to the second atrial septum, leading to the functional closure of the foramen ovale. The anatomical closure of the foramen ovale occurs around one year of age. In 20%-25% of people, the foramen ovale remains anatomically open but does not cause abnormal hemodynamics and is clinically insignificant. In newborns, the ductus arteriosus completely closes to become the ligamentum arteriosum within 6-8 weeks. In 95% of people, the ductus arteriosus completely closes within one year after birth. If the ductus arteriosus does not close, it becomes a patent ductus arteriosus. Currently, it is 16 days since the last examination. A follow-up echocardiogram can be performed in 2-3 months.