A 17-Year-Old Boy Is Brought to the Emergency Department Following

question 205

Multiple Choice

A 17-year-old boy is brought to the emergency department following a motor vehicle accident.  He is found to have an extensive cerebral hemorrhage leading to deep coma, as well as fractures of the C4 vertebra, pelvis, and right femur.  Following admission to the hospital, he is intubated and central lines are placed.  The patient develops acute renal failure due to rhabdomyolysis, which improves rapidly with treatment.  He is extubated after regaining consciousness.  He also undergoes percutaneous endoscopic gastrostomy tube placement due to persistent problems with swallowing.  The patient is unable to ambulate due to quadriparesis resulting from cervical cord injury.  Four weeks after his initial injury, he develops nausea and polyuria.  His laboratory results are as follows: Which of the following is the most likely cause of this patient's hypercalcemia?

• A)Hypoalbuminemia
• B)Immobilization
• C)Malignancy
• D)Primary hyperparathyroidism
• E)Rhabdomyolysis
• F)Vitamin D-induced hypercalcemia

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Definitions:

Population Variance

A measure of the dispersion of a set of data points in a population, calculated as the average of the squared deviations from the mean.

Sample Variance

A measure of the dispersion or spread of a set of data points in a sample, illustrating how much the data differ from the mean.

Grouped Data

Data that has been organized into categories, classes, or intervals, often to simplify analysis and find frequency distributions.

Ungrouped Data

Data that has not been organized into groups or categories and is presented in raw form.