Orthopaedic Nurses Certification Board (ONCB) Metabolic/Inflammatory/Tumors Practice Exam

Hypercalcemia in cancer patients is primarily associated with a variety of symptoms and complications, including pain and potential issues with kidney function. In the context of malignancies, hypercalcemia often occurs due to bone metastases that lead to elevated levels of calcium in the blood, as cancer cells can stimulate osteoclast activity, resulting in bone resorption. This increased calcium can manifest with significant pain due to bone involvement and can also lead to renal complications, such as nephrocalcinosis or acute renal failure, as the kidneys struggle to filter the excess calcium.

Although conditions such as lowered immune function can be relevant in cancer patients, they are not the primary concern tied specifically to hypercalcemia. The other options do not encompass the direct implications of increased calcium levels in the context of cancer, as hypercalcemia does not enhance mobility or promote bone growth; rather, it can lead to debilitating symptoms and decreases in overall functioning due to pain and systemic effects. Therefore, the primary concerns associated with hypercalcemia in cancer patients clearly center around the pain and the potential for kidney complications, affirming the choice related to these serious symptoms.