The nurse notes that the patient who has undergone cardiac surgery is now nauseated, restless, confused, and experiencing peaked tall T waves in the ECG. The nurse suspects the patient may be experiencing symptoms of:
A) Hypocalcemia
B) Hypercalcemia
C) Hyperkalemia
D) Hypermagnesemia
Ans: C
Feedback: Hyperkalemia produces symptoms of confusion, restlessness, nausea, and tall peaked changes in T waves in the ECG. Hypocalcemia produces digitalis toxicity and asystole. Hypocalcemia produces symptoms of paresthesias, carpopedal spasm, muscle cramps, and tetany. Hypermagnesemia produces symptoms of vasodilatation, hypotension, hyporeflexia, and slow gastrointestinal motility.
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