Neonatal Nurse Practitioner Practice Exam

What describes high-frequency ventilation (HFV)?

1. Assessment of chest wall vibration indicates lung compliance

2. HFV is effective for oxygenation problems

3. Provides adequate gas exchange using small tidal volume

4. Reduces airway resistance effectively

The correct answer is: Assessment of chest wall vibration indicates lung compliance

High-Frequency Ventilation (HFV) is characterized primarily by its ability to provide adequate gas exchange by using very small tidal volumes and delivering breaths at a much higher rate than conventional ventilation methods. This mechanism results in a reduced risk of ventilator-induced lung injuries due to lower tidal volumes, therefore minimizing the stretch and pressure on the alveoli. The statement related to the assessment of chest wall vibration indicating lung compliance highlights one of the aspects of HFV technique but does not summarize the primary purpose and mechanism of HFV as effectively as the correct option. HFV is designed to maintain effective gas exchange while minimizing complications associated with large tidal volumes. In contrast, the option regarding the effectiveness for oxygenation problems does not capture the unique characteristics of HFV, as it is more commonly recognized for its utility in conditions where mechanical ventilation is essential. While HFV can aid in oxygenation indirectly, it is not its defining characteristic. Additionally, while HFV can have some impact on reducing airway resistance, this is not its primary function; rather, the focus is on utilizing small tidal volumes for gas exchange. Therefore, the choice that accurately describes HFV is the one that emphasizes the provision of adequate gas exchange with small tidal volumes.