Question

How much local anesthetic is there in a cartridge of 4% articaine (1.7 ml of solution in a cartridge)

a. 68 mg
b. 72 mg
c. 54 mg
d. 36 mg

Answer 1

The amount of local anesthetic in a 4% aptocaine solution with 1.7 ml in a cartridge is 68 mg. The calculation involves converting the percentage concentration to mg/ml and then multiplying by the volume of the cartridge. the correct answer is a). 68 mg .

Step-by-step explanation:

The correct amount of local anesthetic in a 4% solution of articaine with 1.7 ml of solution in a cartridge is 68 mg.

To calculate this, we use the following steps:

1. First, we need to understand what a 4% solution means. It signifies that there are 4 grams of articaine in every 100 ml of solution.
2. To find out how much articaine there is in 1.7 ml, we convert 4 grams to milligrams, because 1 gram is equal to 1000 milligrams. So, 4 grams is 4000 milligrams.
3. We then set up a proportion to determine how much is in 1.7 ml: If 100 ml contains 4000 mg, then 1 ml contains 4000 mg / 100 ml, which is 40 mg/ml.
4. Finally, we multiply the amount in one milliliter by the total number of milliliters in the cartridge: 40 mg/ml × 1.7 ml = 68 mg.

The amount of local anesthetic in a cartridge of 4% articaine solution can be calculated using the following formula:

Amount of Local Anesthetic (in mg) = Concentration of Articaine (%) x Volume of Solution (in ml)

Plugging in the values given, we get:

Amount of Local Anesthetic = 4% x 1.7 ml = 0.04 x 1.7 ml = 0.068 ml = 68 mg

Therefore, the correct answer is 68 mg.