Prior to administering digoxin to a client, what should the nurse assess?

Assessing the serum potassium level is crucial before administering digoxin because potassium levels significantly influence the drug's effects and the risk of toxicity. Digoxin has a narrow therapeutic range and its action can be affected by electrolyte imbalances. High levels of potassium (hyperkalemia) can diminish digoxin's effectiveness, while low levels (hypokalemia) can increase the risk of toxicity, leading to potentially serious complications such as arrhythmias.

Proper management of potassium levels is essential for ensuring the safe and effective use of digoxin. Monitoring serum potassium helps the nurse identify potential issues that could affect the client's response to the medication and allows for appropriate interventions if necessary. Other assessments, while important for overall patient care, do not directly impact the immediate administration of digoxin as critically as potassium levels do.