The nurse is reviewing the patient's laboratory results. Which result must be communicated to the physician immediately?
a. Serum chloride level 85 mEq/L
b. Serum sodium level 134 mEq/L
c. Serum potassium level 6.8 mEq/L
d. Serum magnesium level 2.3 mEq/L
ANS: C
Normal serum potassium level is 3.5 to 5.0 mEq/L. A serum potassium level of 6.8 mEq/L is very high and puts the patient at risk for cardiac arrhythmias. The potassium level should be reported to the physician immediately.
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