What is the sublingual nitroglycerin dose used in MONA?

What is the sublingual nitroglycerin dose used in MONA?

• A. 0.4 mg
• B. 0.04 mg
• C. 1 mg
• D. 4 mg

Answer: (A)

The main idea is that the standard sublingual nitroglycerin dose used in MONA is 0.4 mg per dose. This small, fast-acting amount is placed under the tongue because sublingual absorption is rapid and bypasses first-pass metabolism, giving quick relief for ischemic chest pain. Typically it’s given every 5 minutes, up to three doses, while checking blood pressure and symptoms. Why this dose fits best: 0.4 mg provides enough venodilation to reduce preload and myocardial oxygen demand without causing excessive hypotension in most patients. It acts quickly to relieve pain, and repeating up to three doses allows ongoing relief if pain persists. Doses like 0.04 mg would be too weak to produce meaningful effect, while 1 mg or 4 mg sublingual amounts are larger than the standard SL dose and carry a higher risk of hypotension and headaches. In practice, if pain continues after the recommended doses or if blood pressure falls, reassessment and alternative management are needed.

The main idea is that the standard sublingual nitroglycerin dose used in MONA is 0.4 mg per dose. This small, fast-acting amount is placed under the tongue because sublingual absorption is rapid and bypasses first-pass metabolism, giving quick relief for ischemic chest pain. Typically it’s given every 5 minutes, up to three doses, while checking blood pressure and symptoms.

Why this dose fits best: 0.4 mg provides enough venodilation to reduce preload and myocardial oxygen demand without causing excessive hypotension in most patients. It acts quickly to relieve pain, and repeating up to three doses allows ongoing relief if pain persists. Doses like 0.04 mg would be too weak to produce meaningful effect, while 1 mg or 4 mg sublingual amounts are larger than the standard SL dose and carry a higher risk of hypotension and headaches.

In practice, if pain continues after the recommended doses or if blood pressure falls, reassessment and alternative management are needed.