A nurse is teaching a client who has stable angina and a new prescription for nitroglycerin transdermal patches 0.8 mg/hr daily. Which of the following statements by the client indicates an understanding of the teaching?

A. This statement indicates correct understanding. Remaining upright after taking ferrous gluconate reduces the risk of esophageal irritation or discomfort, which can occur if the medication refluxes into the esophagus. This is an important teaching point for clients taking iron supplements.

B. This statement is incorrect. Antacids can interfere with the absorption of ferrous gluconate by altering stomach acidity, which is necessary for optimal iron absorption. Clients should avoid taking antacids within two hours of iron supplements.

C. This statement is incorrect. Milk and other calcium-containing products inhibit the absorption of iron. It is recommended to take ferrous gluconate with water or a source of vitamin C, such as orange juice, to enhance absorption.

D. This statement is incorrect. Black stools are a common and harmless side effect of taking iron supplements and do not typically require notifying the provider unless accompanied by other symptoms like abdominal pain or blood in the stool.

A. Advise the client to change positions slowly: The client's symptoms of dizziness and light- headedness upon standing suggest orthostatic hypotension, which can be managed by advising the client to change positions slowly to minimize blood pressure drops upon standing.
B. Check the client for orthostatic hypotension. Monitor the client for dysrhythmias: The client's symptoms, along with the report of waking up at night to void, are suggestive of orthostatic hypotension, a drop in blood pressure upon standing. Checking for orthostatic hypotension and monitoring for dysrhythmias are appropriate nursing actions to assess and manage this condition.

C. Advise the client to restrict potassium intake: Restricting potassium intake is not indicated based on the client's symptoms of dizziness and light-headedness. This action is not relevant to the situation described.
D. Advise the client to take the medication before bedtime: There is no indication in the scenario provided that medication timing is related to the client's symptoms. This action is not relevant to addressing the client's reported symptoms.