A nurse is assessing a client who has prescription for digoxin for congestive heart failure. Which of the following findings should the nurse identify as a manifestation of digoxin toxicity?

A. Dry mucus membranes: Dry mouth or dehydration can occur with many conditions or medications, but it is not a characteristic sign of digoxin toxicity. It is unrelated to digoxin’s effects on the heart or vision. B. Heart rate 62/min: A heart rate of 62/min may be normal for many adults and does not automatically indicate digoxin toxicity. Toxicity more commonly presents with bradycardia below the client’s baseline or with irregular rhythms. C. Hypertension: Digoxin primarily affects cardiac contractility and conduction rather than blood pressure. Hypertension is not typically associated with digoxin toxicity. D. Client reports yellow-tinged vision: Visual disturbances such as yellow or green halos around objects, blurred vision, or changes in color perception are classic manifestations of digoxin toxicity. These symptoms occur due to digoxin’s effect on retinal photoreceptors and are important early indicators for intervention.