Nitroglycerin maximum dose can be delivered in inches of paste. How many inches comprise the max dose?

Nitroglycerin maximum dose can be delivered in inches of paste. How many inches comprise the max dose?

• A. 0.5 inch
• B. 1 inch
• C. 2-3 inches
• D. 1-2 inches

Answer: (D)

With topical nitroglycerin paste, the dose is measured by the length of paste applied, not by milligrams, because the paste has a fixed concentration. You apply a strip of paste to the chest and the length determines how much nitroglycerin you’re delivering. The maximum per dose is typically in the range of 1 to 2 inches. This range allows enough vasodilation to help relieve chest pain while avoiding the risk of significant hypotension or tachycardia from too large a dose. A shorter length like 0.5 inch is often insufficient for relief, while a length of 2 to 3 inches would exceed the recommended maximum and increase adverse effects. Therefore, the upper limit you’d expect for a single application is 1–2 inches.

With topical nitroglycerin paste, the dose is measured by the length of paste applied, not by milligrams, because the paste has a fixed concentration. You apply a strip of paste to the chest and the length determines how much nitroglycerin you’re delivering. The maximum per dose is typically in the range of 1 to 2 inches. This range allows enough vasodilation to help relieve chest pain while avoiding the risk of significant hypotension or tachycardia from too large a dose. A shorter length like 0.5 inch is often insufficient for relief, while a length of 2 to 3 inches would exceed the recommended maximum and increase adverse effects. Therefore, the upper limit you’d expect for a single application is 1–2 inches.