Which statement shows that a client needs more education about nitroglycerin use?

The statement indicating that a client believes they can take doses of nitroglycerin until the pain is gone demonstrates a lack of understanding about the medication's use. Nitroglycerin is typically prescribed to relieve angina (chest pain) and works by dilating blood vessels to improve blood flow. However, it is essential for patients to recognize the limits of its use.

Patients should be informed that nitroglycerin is not meant for continuous use or to be taken in excess; rather, it is prescribed in specific doses for safety and efficacy. The recommendation is generally to take one dose at the onset of pain and to wait a set period (typically five minutes) before taking another dose, up to a maximum of three doses in a 15-minute time frame. This approach helps prevent potential side effects such as hypotension (low blood pressure) and excessive vasodilation, as well as ensuring that any underlying issue prompting the angina is addressed appropriately.

In contrast, the other statements indicate a more accurate understanding of nitroglycerin use: knowing the limit on doses, the proper method of administration, and that it can be used as needed within the recommended limits suggest that those individuals have received adequate education about the medication.