How many sprays of a glyceryl trinitrate spray should be used before seeking emergency help if chest pain persists?

• A. 1 spray
• B. 2 sprays
• C. 3 sprays
• D. 4 sprays

Answer: (C)

Glyceryl trinitrate spray relieves chest pain by dilating blood vessels, which lowers the heart’s oxygen demand. The guidance is to use one spray under the tongue, wait about five minutes, and if the pain continues, repeat the dose. This can be done up to a total of three sprays. If the chest pain still persists after using three sprays, seek emergency help immediately. This three-spray limit is in place because ongoing chest pain after the maximum recommended dose could indicate a more serious problem such as a heart attack, requiring urgent medical evaluation. While using it, remain seated or resting and avoid taking more than the prescribed number of sprays.