Neonatal Nurse Practitioner NCC Practice Exam

In HFOV optimization, the goal is to minimize oxygen exposure and injury from sustained airway pressures as the infant’s lung status improves. Once oxygenation is adequate, you reduce the fraction of inspired oxygen to lower oxygen toxicity and decrease the mean airway pressure to lessen lung stretch, while keeping gas exchange stable by adjusting amplitude and frequency as needed. If oxygenation worsens after lowering MAP, you can adjust other settings, but the typical approach during optimization is to decrease both FiO2 and MAP. Increasing FiO2 or MAP would raise oxygen exposure or pressure, which is not consistent with the optimization goal. Reducing FiO2 with a higher MAP would maintain oxygenation but at greater pressure, also not ideal for optimization. Decreasing FiO2 and MAP together aligns with stepping down support as the infant improves.