Which statement regarding the use of sublingual nitroglycerin (NTG) indicates further teaching is needed?

The statement indicating a need for further teaching is regarding the advice to wait until after taking the third tablet before calling 911 if there is no relief from chest pain. Sublingual nitroglycerin is commonly prescribed for the immediate relief of angina symptoms, and patients are typically advised to take one tablet and wait for a few minutes, usually about five, to assess effectiveness. If pain persists after the first dose, they should take a second tablet and again wait a few minutes. However, if the chest pain continues after the third dose (which should be administered every five minutes), it is critical to call emergency services immediately. Delaying this call can risk further complications or worsening of a potentially life-threatening condition, such as an acute myocardial infarction (heart attack).

The other statements reflect an understanding of the proper use and expectations regarding sublingual nitroglycerin. Flushing is a common side effect of nitroglycerin due to vasodilation, and lying down can be helpful to prevent dizziness or hypotension that may occur after taking the medication. It is also crucial for the patient to understand that the tablet must not be swallowed but rather placed under the tongue for effective absorption.