The nurse is assessing the patient for the presence of a Chvostek's sign. What electrolyte imbalance does a positive Chvostek's sign indicate?
A) Hypermagnesemia
B) Hypomagnesemia
C) Hypocalcemia
D) Hyperkalemia
Ans: C
Feedback: You can induce Chvostek's sign by tapping the patient's facial nerve adjacent to the ear. A brief contraction of the upper lip, nose, or side of the face indicates Chvostek's sign. Both hypomagnesemia and hypocalcemia may be tested using the Chvostek's sign.
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