Neonatal Nurse Practitioner Practice Exam

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What is the recommended range for AMP settings in HFOV?

5-15 cm H2O
10-30 cm H2O
15-25 cm H2O
20-40 cm H2O

The correct answer is: 10-30 cm H2O

The recommended range for AMP (Amplitude) settings in High-Frequency Oscillatory Ventilation (HFOV) is crucial for ensuring effective ventilation while minimizing potential lung injury. Specifically, the range of 10-30 cm H2O is appropriate because it allows for sufficient lung expansion without causing overdistension or barotrauma. In the context of HFOV, AMP settings refer to the degree of pressure variation applied to achieve ventilation. The chosen range is effective in delivering adequate tidal volumes, which are much smaller than those used in conventional ventilation methods. This is particularly important in neonatal patients, who are often more susceptible to lung injury. Settings below the recommended range may result in inadequate ventilation, leading to hypoxia and hypercapnia, while settings above this range could increase the risk of lung injury due to excessive pressure. Thus, maintaining AMP settings within the 10-30 cm H2O range is essential for achieving a balance between effective gas exchange and lung protection.