Which statement about Nitroglycerin administration in suspected acute coronary syndrome is accurate?

• A. Nitroglycerin 0.4 mg sublingual every 3 minutes as needed, may repeat while signs of adequate tissue perfusion; base hospital contact if RV infarction suspected; nitro paste is a one-time dose.
• B. Nitroglycerin paste, 1 inch transdermal, may be repeated as needed.
• C. Nitroglycerin sublingual is not the preferred route for ACS.
• D. Nitrates can be used even with sexual enhancement medications used within the last 48 hours.

Answer: (A)

In suspected acute coronary syndrome, the goal is to relieve chest pain and reduce myocardial oxygen demand quickly while keeping the patient’s blood pressure and perfusion stable. The preferred route for rapid relief is sublingual nitroglycerin because it is absorbed quickly through the oral mucosa, delivering a fast onset of action.

The best statement reflects this approach: give nitroglycerin sublingual in small, repeatable doses (0.4 mg) every few minutes (commonly every 3 minutes) as needed, up to a total of three doses, as long as the patient remains adequately perfused and hemodynamically stable. It also correctly notes that if a right ventricular infarction is suspected, you should contact the base hospital guidance, since nitrates can reduce preload and worsen RV infarction.

Regarding the other parts of the statement: transdermal nitro paste is not used as a repeated acute dose in this setting—typically it’s considered a single application rather than a repeated dosing strategy for an acute episode. Sublingual administration is indeed the preferred route in ACS, not something to avoid. Finally, nitrates should not be used if sexual enhancement medications (PDE-5 inhibitors) have been taken within the last 24 to 48 hours, due to the risk of dangerous hypotension; the statement that they can be used in that situation is incorrect.

So the correct choice aligns with rapid, repeatable sublingual dosing, single-use paste dosing in this context, and consulting base if RV infarction is suspected.