A patient is admitted to the hospital after several days of vomiting and diarrhea
After an initial bolus of isotonic (0.9%) sodium chloride solution, the prescriber orders dextrose 5% in normal saline (D5NS) with 20 mEq potassium chloride to infuse at a maintenance rate. What should the nurse review before implementing this order? (Select all that apply.)
a. Electrocardiogram
b. Arterial blood gas levels
c. Serum electrolyte levels
d. Serum glucose level
e. Urine output
ANS: A, C, E
Patients receiving potassium should be monitored for cardiovascular toxicity; an ECG before and during administration can help monitor for this adverse effect. Serum electrolyte levels should be reviewed to make sure the patient is not already hyperkalemic. Because potassium is excreted via the kidneys, it is important to determine that renal function is intact. Intravenous potassium should never be given if the patient has not voided. Patients who are hyperkalemic can be treated with sodium bicarbonate to increase pH and insulin to promote uptake of potassium by cells, but it is not necessary to evaluate the blood gas or glucose levels before administering potassium.
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