What is the priority nursing assessment for a client who is about to begin digoxin therapy?

A. Blood glucose levels: While monitoring blood glucose is important for diabetic patients, it is not the priority assessment when starting digoxin therapy. Digoxin is primarily affected by renal function, not blood glucose. B. Neurological function: Neurological function may be affected by digoxin toxicity, but the priority assessment when starting therapy is kidney function. The kidneys are responsible for eliminating digoxin, and impaired renal function can increase the risk of toxicity. C. Kidney function: Digoxin is primarily excreted by the kidneys, and impaired kidney function can lead to a buildup of the drug in the body, increasing the risk of toxicity. Monitoring kidney function is critical to ensure safe administration of digoxin. D. Liver function: While liver function is important for many medications, digoxin is not primarily metabolized by the liver. Therefore, kidney function should be the priority when starting digoxin therapy.