Pediatrics The initiation of the first breath in a newborn is due to: A |pH; |PaO2; |PaCO2 B |pH; |PaO2; |PaCO2 C |pH; |PaO2, |PaCO2 D |pH; |PaO2, |PaCO2 💡 Explanation The initiation of the first breath in a newborn is due to: ✓ Correct Answer: B. |pH; |PaO2; |PaCO2