After increasing the level of CPAP delivered to an infant, the therapist notices that the neonate's PaCO₂ rises and the PaO₂ falls. What may have caused this situation?

Question

Quizplus · Accepted Answer

A rise in PaCO₂ or fall in PaO₂ soon after the CPAP pressure has been increased may indicate that the optimal CPAP level has been exceeded. An increase in mean airway pressure can result in increased alveolar dead space because of mechanical compression of the pulmonary microvasculature. If gas exchange worsens in a patient who appeared to be improving, the CPAP pressure can first be reduced. If the patient's situation does not improve, endotracheal intubation and mechanical ventilation may be indicated.

After Increasing the Level of CPAP Delivered to an Infant