A nurse is caring for a patient who has acute osteomyelitis.
Which of the following interventions is the nurse's priority?

Choice A rationale

Pantothenic acid (vitamin B5) is involved in fatty acid metabolism and coenzyme A synthesis, while vitamin B6 (pyridoxine) is crucial for amino acid metabolism and neurotransmitter synthesis. Prednisone does not typically lead to deficiencies in these vitamins.

Choice B rationale

Biotin (vitamin B7) plays a role in carbohydrate, fat, and protein metabolism, and vitamin B2 (riboflavin) is essential for cellular respiration and energy production. Prednisone therapy is not directly linked to a need for these supplements.

Choice C rationale

Folic acid (vitamin B9) is necessary for DNA synthesis and cell division, and vitamin C (ascorbic acid) is an antioxidant involved in collagen synthesis and immune function. Prednisone's effects do not primarily target these metabolic pathways to cause deficiencies.

Choice D rationale

Long-term prednisone therapy can lead to bone demineralization by increasing osteoclast activity and decreasing calcium absorption in the gut, thus increasing the risk of osteoporosis. Vitamin D is essential for calcium absorption and bone health. Supplementation with calcium and vitamin D helps to mitigate these adverse effects of prednisone. Normal serum calcium levels range from 8.5 to 10.5 mg/dL, and normal vitamin D levels are generally considered to be between 20 to 50 ng/mL, although optimal levels may vary.

Choice A rationale

Basal cell carcinoma, the most common type of skin cancer, often presents as a raised, flesh-colored or pearly white papule or nodule with rolled, pearly borders and telangiectasia (visible small blood vessels). The description of the 1-cm raised, flesh-colored lesion with pearly white borders aligns with the typical appearance of basal cell carcinoma.

Choice B rationale

Malignant melanoma is characterized by its irregular shape, asymmetrical borders, uneven color (often with shades of black, brown, red, white, or blue), and diameter greater than 6 mm. It can arise from existing moles or appear as a new pigmented lesion. The described lesion does not fit this profile.

Choice C rationale

Actinic keratosis is a precancerous skin condition that appears as rough, scaly patches on sun-exposed areas. These lesions are typically flat or slightly raised and can be skin-colored, reddish-brown, or have a whitish scale. The description of a raised lesion with pearly borders is inconsistent with actinic keratosis.

Choice D rationale

Squamous cell carcinoma often presents as a firm, red nodule or a flat lesion with a scaly, crusted surface. It can also appear as a non-healing ulcer. While it can occur on the chest, the pearly white borders are more characteristic of basal cell carcinoma.