A nurse is developing a client education program about osteoporosis for older adult clients.

The nurse should include which of the following variables as a risk factor for osteoporosis?

- A is correct because aPTT (activated partial thromboplastin time) measures the effectiveness of heparin therapy and guides dosage adjustments.

- B is incorrect because PT (prothrombin time) measures the effectiveness of warfarin therapy, not heparin.

- C is incorrect because INR (international normalized ratio) is a standardized version of PT that also monitors warfarin therapy, not heparin.

- D is incorrect because WBC count (white blood cell count) measures the body's immune response and has no relation to heparin therapy.

Initiate transmission-based precautions.

Rationale:

1. B- Encouraging oral fluids is an important intervention for a child who has a fever, as it helps prevent dehydration and electrolyte imbalance. However, it is not the priority intervention, as it does not address the risk of infection transmission to other clients or staff.
2. A - Applying topical calamine lotion may help soothe the itching and discomfort caused by the vesicles, but it is not the priority intervention, as it does not prevent infection transmission or treat the underlying cause of the fever.
3. C - Administering acetaminophen as an antipyretic may help reduce the fever and provide symptomatic relief for the child, but it is not the priority intervention, as it does not prevent infection transmission or treat the underlying cause of the fever.
4. D - Initiating transmission-based precautions is the priority intervention, as it protects other clients and staff from exposure to the infectious agent that causes the vesicles and fever. The nurse should wear gloves, gown, mask, and eye protection when caring for the child, and place them in a private room or cohort them with other clients who have similar symptoms.