The primary care provider assesses a patient at the office with a calcium concentration of 16.0 mg/dL, nausea, and vomiting. What does the provider do first for this patient?

This procedure is primarily used to visually examine the upper gastrointestinal tract for abnormalities such as ulcers or tumors. While gastrointestinal symptoms may be present, they are not the immediate concern in the context of significantly elevated calcium levels, which require urgent medical intervention rather than diagnostic exploration.

While blood tests are important for diagnosing underlying conditions, in cases of severe hypercalcemia, immediate stabilization and treatment take precedence. Referral to an emergency department is necessary to promptly address the potential life-threatening consequences of elevated calcium levels rather than just obtaining blood work.

An electroencephalogram (EEG) measures electrical activity in the brain and is generally used to diagnose conditions such as seizures or epilepsy. This option does not address the immediate medical need presented by the patient’s hypercalcemia and related symptoms, making it an inappropriate first action.