A nurse is providing teaching to a client who has a new prescription for transdermal nitroglycerin paste. Which of the following statements by the client indicates the need for further teaching?

A. "I might have a headache when I first start taking this medication.": A common side effect of nitroglycerin, including transdermal forms, is a headache, especially when starting the medication. This occurs due to the vasodilation effect of nitroglycerin. B. "I should measure the dosage on the supplied paper.": Transdermal nitroglycerin paste is typically applied using the supplied paper, and the correct dosage should be measured according to the prescribed amount. The paper helps to ensure accurate application. C. "I should get up slowly when I stand.": Nitroglycerin can cause dizziness or lightheadedness due to its vasodilatory effects, so it is important to rise slowly to avoid orthostatic hypotension (a drop in blood pressure when standing). D. "I should leave the patch in place until it is time for the next dose.": Transdermal nitroglycerin patches should be removed after a 12-14 hours to allow for a patch-free interval. This helps prevent tolerance to the medication. Leaving the patch on continuously could lead to reduced effectiveness over time.