This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New born infants, Subject name: Pediatrics
In full term neonates, the ductus aeriosus closure is due to 
Select and explain. 
A. Cardiac output, B. Prostaglandins, C. Low pressure CO2, D. High pressure O2
D: High pressure O2
Answer: D: High pressure O2 
Explanation: High pressure O2 can cause the closure of ductus aeriosus. Reference: GHAI Essential pediatrics, 8th edition