Final answer:
For one chest pain incident, nitroglycerin is administered with a maximum dosage of 3 doses, with 5 minutes between each dose. If pain persists, immediate medical attention is needed.
Step-by-step explanation:
The correct answer to the question regarding the maximum dosage frequency and time frame for nitroglycerin administration for one chest pain incident is D. 3 doses, allowing 5 minutes in between doses. Nitroglycerin is commonly used to relieve chest pain in heart disease by dilating the coronary arteries to improve blood flow. It is typically administered sublingually to ensure rapid absorption. If the chest pain does not improve after three doses taken 5 minutes apart, it is advised to seek immediate medical attention as this could be a sign of an acute myocardial infarction (MI) or other serious condition.