Based on a client's serum digoxin level, the client is diagnosed with digoxin toxicity. Which action should the nurse expect to implement?

A. Administering digoxin by another route is not appropriate for managing toxicity. B. Cardioversion may be considered if there are significant arrhythmias, but the immediate action is to address the toxicity. C. Potassium administration may be needed in the case of digoxin toxicity, especially if there is hypokalemia, but the first step is to check for electrolyte imbalances. D. Checking acid-base and electrolyte values is crucial to manage digoxin toxicity effectively and guide further treatment.