A 39-Year-Old Woman Comes to the Physician with a "Pins

question 1148

Multiple Choice

A 39-year-old woman comes to the physician with a "pins and needles" sensation around her mouth for the last 2-3 weeks.  She occasionally has similar sensations in her feet, along with muscle cramps, especially at the end of the day.  Her past medical history is unremarkable, and she does not use tobacco, alcohol, or illicit drugs.  Family history is not significant.  Vital signs are normal, and examination is unremarkable.  Laboratory findings results are as follows: Which of the following is the most likely cause of this patient's condition?

• A)Conversion of vitamin D to inactive metabolites
• B)Decreased secretion of parathyroid hormone
• C)Impaired 1-hydroxylation of vitamin D
• D)Inadequate availability of vitamin D
• E)Inadequate calcium intake
• F)Precipitation of calcium in soft tissues

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Definitions:

Preventable Diseases

Illnesses that can be avoided through measures such as vaccination, lifestyle changes, and adherence to health guidelines.

Cognitive Development

The process through which a person learns to reason, solve problems, and understand concepts.

Affordances

Refers to the actional properties of objects—their nature, opportunities, and limits.

Habituation

The process of becoming accustomed to a stimulus after repeated exposure, leading to a decrease in response.