A 45-Year-Old Woman Is Being Evaluated in the Second Post

A 45-year-old woman is being evaluated in the second post thyroidectomy day. The patient reports a new perioral tingling sensation accompanied with a muscle cramp. Vital signs are normal. Blood pressure is 118/78 mm Hg, pulse is 72/min, and respirations are 15/min. Physical examination shows normal muscle strength and deep tendon reflexes. Light tapping anterior to the ear elicits twitching of the lower facial muscles. An increase in which of the following best explains this patient's current symptoms?

A) Calcium binding by albumin
B) Calcium release from bones
C) Hydroxylation of vitamin D
D) Intestinal phosphate absorption
E) Urinary calcium excretion

Correct Answer:

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