The patient has received several units of citrated blood very quickly. The nurse notes that the patient now has facial nerve contraction. What electrolyte disturbance is the patient most likely to be experiencing?
a. hypokalemia c. hypermagnesemia
b. hypocalcemia d. hyperphosphatemia
B
Hypocalcemia is associated with a positive Chvostek's sign or the contraction of facial muscles when the facial nerve is tapped. Hyporeflexia is associated with hypokalemia. Muscle weakness is associated with hypermagnesemia. Muscle weakness is also associated with hyperphosphatemia.
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