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Kaplan Qbank USMLE



Author3 Posts
  #1

A 34-year-old female is brought to the emergency room with severe
muscle cramps and carpopedal spasms. The patient was noted to be extremely
irritable and was complaining of tingling around the mouth and in the hands
and feet. A few hours later, laboratory examination reveals
sodium 140 mEq/L, potassium 4.2 mEq/L, chloride 101 mEq/L,
calcium 6.4 mg/dL, phosphate 5.1 mg/dL,
magnesium 2.4 (normal 1.8-3.8 mg/dL) and alkaline phosphatase 67 U/L. A CT scan of the head shows basal ganglia calcifications. Prolonged QT intervals and T wave abnormalities are noted on electrocardiogram. The history is pertinent for a thyroidectomy two months prior to admission. Which of the following conclusions is most consistent with these data?
A. An increase in dietary vitamin D is warrante
B. Hepatocytes have a low 25-hydroxylase activity
C. Intestinal cells are underexpressing calcium transporter genes
D. Isolated cells from the kidney have high 1-hydroxylase activity
E. The levels of 1,25-dihydroxy vitamin D are normal

please do post the reasons too.

thanks


___________________
remedy for weakness is not brooding over it ,but thinking of strength.

  #2

A

A case of HYPOPARATHYROIDISM ,so treatment

Ca++

Vit D


___________________
FA is just a good revision book.It is not a "real" learning tool.

  #3

ya this is clearly hypoparahyroidism.

the qt. asks which statement is most consistent.

do u think statement C is incorrect.coz Ca receptors r induced by PTH in intestine.

all opinios welcomed


___________________
remedy for weakness is not brooding over it ,but thinking of strength.







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