A nurse notes that a client has ST-segment depression on the electrocardiogram (ECG) monitor. With which serum potassium reading does the nurse associate this finding?
A. 3.1 mEq/L (3.1 mmol/L)
B. 4.2 mEq/L (4.2 mmol/L)
C. 4.5 mEq/L (4.5 mmol/L)
D. 5.4 mEq/L (5.4 mmol/L)
Ans: A. 3.1 mEq/L (3.1 mmol/L)
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