The client diagnosed with vitamin B12 deficiency presents to the outpatient department for the follow-up evaluation. Which nursing assessment finding indicates that the treatment has been effective? The client:

Choice A reason: Glucose of 110 mg/dL is not a finding that indicates digoxin toxicity. It is a normal blood glucose level for a fasting or non-fasting client.

Choice B reason: Potassium of 3.0 mEq/L is a finding that indicates digoxin toxicity. It is a low serum potassium level, which increases the risk of digoxin toxicity by enhancing the binding of digoxin to cardiac cells. The nurse should monitor the client for signs and symptoms of digoxin toxicity, such as nausea, vomiting, anorexia, fatigue, confusion, visual disturbances, and cardiac arrhythmias.

Choice C reason: Calcium of 9.0 mg/dL is not a finding that indicates digoxin toxicity. It is a normal serum calcium level for an adult client.

Choice D reason: Sodium of 133 mEq/L is not a finding that indicates digoxin toxicity. It is a slightly low serum sodium level, which may indicate hyponatremia, but not digoxin toxicity.

Choice A reason: Avoiding strenuous activity and standing up slowly is not a relevant response to the client's complaint of headache. These actions may help prevent or reduce orthostatic hypotension, which is another possible side effect of nitroglycerin, but not headache.

Choice B reason: Headache is expected and should subside with continued use is a correct and appropriate response to the client's complaint of headache. The nurse should explain that headache is a common and transient side effect of nitroglycerin, which is caused by the vasodilation effect of the drug. The nurse should also advise the client to take over-the-counter analgesics, such as acetaminophen, to relieve the headache.

Choice C reason: Reducing the dosage to help relieve this side effect is not a correct or appropriate response to the client's complaint of headache. The nurse should not suggest any changes in the prescribed dosage of nitroglycerin, as this may compromise the effectiveness of the drug and increase the risk of angina or myocardial infarction. The nurse should also remind the client to follow the instructions for applying and removing the Nitropatch.

Choice D reason: You will have this side effect as long as you are taking nitroglycerin is not a correct or appropriate response to the client's complaint of headache. The nurse should not discourage or alarm the client by implying that the headache is inevitable and permanent. The nurse should reassure the client that the headache will likely diminish over time as the body adapts to the drug.