A 65-year-old patient with a history of breast cancer presents with weakness, nausea, and confusion.

Laboratory results indicate elevated calcium levels.

Which intervention should the nurse prioritize for this patient exhibiting signs of hypercalcemia?

Choice A rationale

Administering chemotherapy involves the handling of highly toxic cytotoxic agents that require specialized certification and advanced clinical knowledge. Nursing assistants do not possess the legal scope of practice or the pharmacological training to manage these medications, even under direct supervision. Prioritizing this delegation would violate safety protocols and state nurse practice acts, as the risk of extravasation or systemic toxicity requires continuous assessment by a registered nurse.

Choice B rationale

Monitoring vital signs is a technical task that falls within the competency of a nursing student who has received proper instruction. The registered nurse remains responsible for interpreting these values, but delegating the collection of data allows for efficient workflow. Vital signs provide critical data on the hemodynamic stability of a cancer patient, and a qualified student can accurately perform this task once they have demonstrated clinical proficiency in a controlled environment.

Choice C rationale

Patient education regarding the complex side effects of radiation therapy is a core responsibility of the registered nurse that cannot be delegated to a licensed practical nurse. Radiation involves intricate physiological changes, such as skin integrity breakdown and internal tissue inflammation, requiring a high level of clinical judgment. While an LPN can reinforce teaching, the initial assessment of learning needs and the development of the educational plan must be performed by the professional nurse.

Choice D rationale

Performing clinical assessments is a non-delegable task that requires professional diagnostic reasoning and specialized medical knowledge. Family members can provide subjective information regarding a patient's comfort or history, but they lack the objective clinical training required to evaluate physical symptoms or disease progression. Assigning assessment tasks to unlicensed individuals who are not healthcare professionals compromises patient safety and leads to inaccurate data collection regarding the patient's oncological status.

Choice A rationale

While steroids can be used in the management of hypercalcemia associated with certain hematologic malignancies or vitamin D toxicity, they are not the immediate priority for acute stabilization. Corticosteroids work by decreasing intestinal calcium absorption and inhibiting bone resorption, but their onset of action is relatively slow, taking several days to manifest. In the context of symptomatic hypercalcemia, more rapid interventions like aggressive hydration are required to protect renal function and lower serum calcium.

Choice B rationale

The primary physiological priority in treating hypercalcemia is the restoration of intravascular volume and the enhancement of urinary calcium excretion through aggressive hydration. Hypercalcemia induces a nephrogenic diabetes insipidus, leading to profound dehydration which further impairs the kidneys' ability to clear excess calcium. Administering large volumes of isotonic saline, or encouraging high oral intake if tolerated, increases the glomerular filtration rate and promotes sodium-induced calcium diuresis within the renal tubules.

Choice C rationale

Positioning a patient in a supine position does not address the underlying biochemical imbalance of elevated serum calcium levels and could potentially worsen the risk of respiratory complications or skin breakdown. Patients with hypercalcemia are at increased risk for pathological fractures due to bone resorption; however, mobility is actually encouraged as weight-bearing activity helps move calcium back into the bone matrix. Prolonged immobilization in any position can further exacerbate bone demineralization and increase serum calcium concentrations.

Choice D rationale

While infection can complicate the clinical picture of a patient with cancer, the primary presenting symptoms of nausea, confusion, and weakness in a patient with known breast cancer strongly point toward humoral hypercalcemia of malignancy. Obtaining blood cultures is an appropriate intervention if sepsis is suspected, but it does not address the life-threatening metabolic emergency currently evidenced by the elevated calcium levels. Prioritizing fluid resuscitation is essential to prevent cardiac arrhythmias and acute renal failure.