The nurse receives a report of a serum potassium level on an infant of 5.4 mEq/L (5.4 mmol/L). The nurse should: 1. Notify the physician of the abnormal level. 2. Call the laboratory to see how the...

The nurse receives a report of a serum potassium level on an infant of 5.4 mEq/L (5.4 mmol/L). The nurse should:

1. Notify the physician of the abnormal level.

2. Call the laboratory to see how the specimen was obtained.

3. Connect the infant to a cardiac monitor.

4. Check the infant's last 24-hour output.