Question

a nurse is teaching a client who has a new prescription for nitroglycerin transdermal patch for angina pectoris. which of the following instructions should the nurse include? a remove the patch for at least 10 hr daily. b cut each patch in half if angina attacks are under control. c take off the nitroglycerin patch for 30 min if a headache occurs. d apply a new patch every 48 hr.

Explanation:

• Option A: Removing the patch for at least 10 hours daily helps prevent tolerance to nitroglycerin. Tolerance can reduce the drug's effectiveness over time. By having a "drug - free" period, the body's response to nitroglycerin is maintained.
• Option B: Nitroglycerin patches are formulated to deliver a specific dose. Cutting the patch in half would not provide a reliable or consistent dose. The drug is not evenly distributed in a way that cutting would be a valid dosing adjustment method.
• Option C: Headache is a common side - effect of nitroglycerin due to its vasodilatory properties. Removing the patch for only 30 minutes is not an appropriate way to manage the headache. Usually, acetaminophen can be used to treat the headache, and the patch should be used as prescribed (with the daily removal period as in option A).
• Option D: Nitroglycerin transdermal patches are typically applied daily (with the 10 - hour removal period). Applying a new patch every 48 hours would not provide the necessary continuous (but with a break) drug delivery to prevent angina attacks effectively.

Answer:

A. Remove the patch for at least 10 hr daily.