After assisting ventilation for a respiratory failure patient, her oxygen saturation improved but her respiratory rate decreased. What should your next action be?

In a scenario where a respiratory failure patient shows improvement in oxygen saturation after assisted ventilation but experiences a decrease in respiratory rate, it indicates that the patient might be receiving adequate ventilation and oxygenation. In such cases, the goal is to ensure that the patient is not being over-ventilated.

By decreasing the ventilation rate, you adjust the assistance to better match the patient's needs. This can help prevent potential complications associated with hyperventilation, such as decreased cardiac output or respiratory alkalosis. It is essential to allow the patient to take some breaths independently without overwhelming their respiratory drive.

The other options focus on adjusting tidal volumes or oxygen flow rates, which may not be necessary given the improvement in oxygen saturation. For a patient who is already stable with an adequate oxygen level, maintaining moderate assistance is crucial to support their respiratory efforts while allowing them to regain control of their own ventilation.