Which statement indicates to the nurse that the client understands sublingual nitroglycerin medication instructions?

• A. I will take up to five doses every 3 minutes for chest pain.
• B. I can chew the tablet for the quickest effect.
• C. I will keep the tablets locked in a safe place until I need them.
• D. I should sit or lie down after I take a nitroglycerin tablet to prevent dizziness.

Answer: (D)

Understanding how to use sublingual nitroglycerin safely hinges on recognizing its quick, powerful vasodilating effect and the need to avoid a dangerous drop in blood pressure. The statement that shows true understanding is that you should sit or lie down after placing a nitroglycerin tablet under the tongue. Because the medication rapidly dilates vessels, it can cause dizziness or faintness from sudden hypotension. Being seated or recumbent helps you stay steady and reduces the risk of falling or losing balance as the drug takes effect.

You should let the tablet dissolve under the tongue and not chew or swallow it, so absorption is fast. Only up to three doses are used in about 15 minutes, and if chest pain persists after the third dose, seek emergency help. The other statements reflect common misconceptions: taking more doses than recommended, chewing the tablet for quicker effect, or storing it in a way that doesn’t address how it’s used during an episode.