Which statement about neonatal respiratory physiology is true?

Which statement about neonatal respiratory physiology is true?

• A. The respiratory center is fully mature at birth
• B. Ketamine has minimal respiratory depression in neonates
• C. The respiratory center is not fully developed at birth
• D. Neonates are not sensitive to airway management

Answer: (C)

Neonatal respiratory control is immature at birth; the brainstem respiratory center and peripheral chemoreceptors are not yet fully developed, so a newborn’s ventilatory response to CO2 and hypoxia is limited and breathing can be irregular or pause briefly (periodic breathing). This ongoing maturation in the first days to weeks explains why the statement about the center not being fully developed at birth is true. The opposite claim is false because maturation continues after birth. Ketamine does not universally cause minimal respiratory depression in neonates—while it often preserves spontaneous breathing better than many agents, it can still affect ventilation and airway dynamics, so assuming it has minimal respiratory depression isn’t universally correct. Neonates are highly sensitive to airway management due to small airways, high oxygen consumption, and rapid desaturation during apnea, so saying they’re not sensitive is incorrect.

Neonatal respiratory control is immature at birth; the brainstem respiratory center and peripheral chemoreceptors are not yet fully developed, so a newborn’s ventilatory response to CO2 and hypoxia is limited and breathing can be irregular or pause briefly (periodic breathing). This ongoing maturation in the first days to weeks explains why the statement about the center not being fully developed at birth is true. The opposite claim is false because maturation continues after birth. Ketamine does not universally cause minimal respiratory depression in neonates—while it often preserves spontaneous breathing better than many agents, it can still affect ventilation and airway dynamics, so assuming it has minimal respiratory depression isn’t universally correct. Neonates are highly sensitive to airway management due to small airways, high oxygen consumption, and rapid desaturation during apnea, so saying they’re not sensitive is incorrect.