How long does newborn asphyxia take to cause sequelae?

Patient's question:

My child was just born, but because of poor health, he suffocated for a while. I'm very worried about his health, but I'm not very familiar with it either. How long does newborn asphyxia usually cause sequelae?

Doctor's answer:

Neonatal asphyxia is a disease characterized by hypoxemia, hypercapnia, and acidosis, where the fetus suffers from intrauterine distress due to various reasons before, during, or after delivery, or experiences respiratory and circulatory disorders during the delivery process, leading to no spontaneous breathing or inability to establish regular breathing within one minute after birth. If asphyxia persists for 5 minutes without timely or appropriate treatment, it may lead to ischemic and hypoxic encephalopathy.

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