A nurse is reinforcing teaching with a client who has hypertension and a prescription to measure their blood pressure daily. Which of the following client statements indicates an understanding of the teaching?

The correct answer is **d. Attach a humidifier to the base of the flow meter**.

Choice A rationale:

Keeping the side holes of the mask closed would restrict airflow and prevent the client from receiving the prescribed oxygen concentration. This action would be unsafe and should not be taken.

Choice B rationale:

Ensuring the reservoir bag is inflated on expiration is not necessary for a simple face mask. The reservoir bag is typically used with other oxygen delivery devices, such as a non-rebreather mask, to provide a higher concentration of oxygen. This action is not appropriate for the given scenario.

Choice C rationale:

Applying petroleum jelly to the client's nostrils is not a recommended action. Petroleum jelly can potentially cause irritation and dryness, which could lead to discomfort for the client. This action is not necessary for the safe administration of oxygen.

Choice D rationale:

Attaching a humidifier to the base of the flow meter is the appropriate action to ensure client safety. Humidifying the oxygen can help prevent drying of the client's airway and make the oxygen more comfortable to breathe. This is a recommended step when administering high-flow oxygen via a simple face mask.

The correct answer is choice B: "Support the client's feet with foot boots."

Choice A rationale:

Flexing the client's feet using pillows might not be sufficient to prevent foot drop. Foot drop is a condition where the client is unable to dorsiflex their foot, and using pillows alone may not provide adequate support to prevent this condition.

Choice B rationale:

Supporting the client's feet with foot boots is the most appropriate intervention to prevent foot drop due to immobility. Foot boots are specifically designed to hold the foot in a dorsiflexed position, preventing the calf muscles from tightening and causing foot drop.

Choice C rationale:

Placing a hand roll under the client's heels might offer some relief, but it's not the most effective intervention for preventing foot drop. Hand rolls are generally used to prevent footdrop by keeping the ankles in a neutral position, rather than solely supporting the heels.

Choice D rationale:

Removing ankle-foot orthotic devices at bedtime is not recommended if the client is at risk for developing foot drop. Ankle-foot orthotic devices are designed to provide continuous support to the feet and prevent muscle contractures. Removing them at bedtime could compromise the effectiveness of the intervention.