A nurse is reinforcing teaching with a new parent who is concerned about sudden infant death syndrome (SIDS). Which of the following statements by the client indicates an understanding of the teaching?

The correct answer is Choice C: Take vitamin D supplements.

Choice A rationale:

Reducing intake of calcium-rich foods would not be a suitable recommendation. Calcium is essential for bone health, and a client with minimal sunlight exposure is at risk of vitamin D deficiency, which affects calcium absorption. Therefore, this choice would worsen the client's situation.

Choice B rationale:

Using sunscreen with an SPF of 8 is unlikely to provide adequate protection against the harmful effects of sunlight. Moreover, the client's issue is vitamin D deficiency due to minimal sunlight exposure, and using sunscreen would further hinder vitamin D synthesis.

Choice C rationale:

Taking vitamin D supplements is the most appropriate intervention. Vitamin D is synthesized in the skin upon exposure to sunlight, and since the client has minimal sunlight exposure, supplements are necessary to prevent vitamin D deficiency. This choice addresses the root cause of the issue.

Choice D rationale:

Using a tanning bed is not recommended for increasing vitamin D levels. Tanning beds emit ultraviolet (UV) radiation, which can increase the risk of skin cancer. Moreover, excessive UV exposure is not a safe or controlled method for addressing vitamin D deficiency.

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.