Final answer:
The correct statement indicating an understanding of a nitroglycerin patch is being careful when rising from a chair due to the risk of orthostatic hypotension. Transdermal patches should be removed for a nitrate-free period to prevent tolerance, and site rotation is necessary to avoid skin irritation. Sublingual nitroglycerin is used for acute chest pain, not a new patch.
Step-by-step explanation:
The question pertains to a client's understanding of how to properly use a nitroglycerin transdermal patch for the treatment of chest pain or angina. The correct statement that indicates an understanding of the teaching is a."While using the patch, I will be careful when rising from a chair." This statement reflects the correct precaution due to the potential side effect of orthostatic hypotension, which can cause dizziness when rising too quickly. The choice b is incorrect because the patch should be removed typically after 12-14 hours to allow a nitrate-free period to prevent tolerance. Choice c is incorrect as it can lead to skin irritation; it is recommended to rotate patch sites. Finally, choice d is not the correct use of the patch; for acute chest pain, immediate-release nitroglycerin, such as sublingual tablets or spray, should be used, not a new patch.