A nurse is caring for a client who is prescribed transdermal nitroglycerin for angina. The nurse instructs the client to apply the patch for how long?
A) 4 to 6 hours
B) 6 to 8 hours
C) 10 to 12 hours
D) 12 to 14 hours
Ans: C
Feedback:
The transdermal nitroglycerin patch should be applied every day for 10 to 12 hours. If the patch is applied for a shorter time, the therapeutic dosage may not be delivered. Applying the patch for a longer time will result in the development of tolerance to the antianginal effects. Applying the patch in the morning and leaving it on for 10 to 12 hours, followed by a patch-free period of 10 to 12 hours, delays the development of tolerance.
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