The nurse is preparing to administer a cardiac glycoside as…

The nurse is preparing to administer a cardiac glycoside as prescribed to a patient with heart failure related to valvular disease. The nurse notes: Temperature: 99.8° F (37.7° C), Pulse: 48 beats/min and irregular, Respirations: 20 breaths/min, Potassium level: 3.2 mEq/L (3.2 mmol/L). What action will the nurse take?