A nurse is assessing an older adult client who is receiving digoxin. The nurse should recognize that which of the following findings is a manifestation of digoxin toxicity?

Choice A reason: Grapefruit juice should be avoided while taking verapamil, as it can increase the blood levels of the medication and cause adverse effects such as hypotension, bradycardia, and dizziness. Grapefruit juice inhibits the enzyme that metabolizes verapamil in the liver, leading to higher concentrations of the drug in the bloodstream.

Choice B reason: Orange juice is not a contraindication for verapamil, as it does not affect the metabolism or absorption of the medication. Orange juice is a good source of vitamin C and potassium, which may benefit clients with hypertension.

Choice C reason: Milk is not a contraindication for verapamil, as it does not affect the metabolism or absorption of the medication. Milk is a good source of calcium and protein, which may benefit clients with hypertension.

Choice D reason: Coffee is not a contraindication for verapamil, as it does not affect the metabolism or absorption of the medication. However, coffee contains caffeine, which is a stimulant that can increase the heart rate and blood pressure. Therefore, clients with hypertension should limit their intake of caffeine and other stimulants.

Choice A reason: The nurse collects a urine specimen is an appropriate action, as it can help detect the presence of hemoglobinuria, which is a sign of hemolysis. Hemoglobinuria is the excretion of hemoglobin in the urine, which can cause the urine to appear red or brown.

Choice B reason: The nurse sends a blood specimen to the laboratory is an appropriate action, as it can help confirm the diagnosis of a hemolytic reaction and identify the cause. The laboratory can perform tests such as blood typing, cross-matching, direct antiglobulin test (DAT), and serum bilirubin.

Choice C reason: The nurse initiates an infusion of 0.9% sodium chloride is an appropriate action, as it can help maintain the client's fluid and electrolyte balance and prevent hypovolemic shock. 0.9% sodium chloride is the preferred solution for blood transfusion reactions, as it is isotonic and compatible with blood products.

Choice D reason: The nurse starts the transfusion of another unit of blood product is an inappropriate action, as it can worsen the client's condition and increase the risk of complications. The nurse should not resume the transfusion until the cause of the reaction is determined and the provider orders a new unit of blood product. The nurse should also return the unused blood product and tubing to the blood bank for analysis.