A nurse is in a clinic caring for a client who has a prescription for digoxin (Lanoxin). Which of the following statements by the client indicates the client is experiencing digoxin (Lanoxin) toxicity?

Choice A rationale Seeing "white halos around objects" is a classic visual disturbance, specifically termed chromatopsia or xanthopsia (yellow-green halos), which is a key sign of digoxin toxicity. Digoxin, a cardiac glycoside, affects visual pathways. Other early signs include gastrointestinal upset, fatigue, and bradycardia, indicating drug accumulation above the therapeutic range of 0.5 to 2.0 nanograms per milliliter. Choice B rationale A red, beefy tongue, or glossitis, is primarily a sign of a severe deficiency in B vitamins, such as B12, folate, or niacin, which is associated with conditions like pernicious anemia. This is not a characteristic sign or symptom of toxicity resulting from the cardiac glycoside medication digoxin, which exerts its effects on the heart muscle and central nervous system. Choice C rationale Digoxin toxicity commonly manifests with early gastrointestinal symptoms, but these typically include nausea, vomiting, anorexia, and sometimes diarrhea, which reflect central nervous system stimulation. Constipation, which is the decreased frequency of bowel movements, is not a common or expected side effect or sign of drug toxicity. Choice D rationale Weight gain, especially rapid gain, can indicate fluid retention due to worsening heart failure, a condition digoxin is used to treat. While toxicity can cause anorexia (loss of appetite), it does not typically cause weight gain. Therefore, weight gain may suggest therapeutic failure or worsening disease, not necessarily digoxin toxicity itself. —.