Question

You have just administered one tablet of 64.8 mg of phenobarbital. How many grains of drug did you deliver?

1 grain
2 grains
3 grains
4 grains

Answer 1

One tablet of 64.8 mg of phenobarbital is equivalent to 1 grain, based on the conversion that 1 grain equals 64.8 mg.

Step-by-step explanation:

The question involves unit conversion, which is a common mathematical operation in the medical field. To convert milligrams (mg) to grains, we must know the equivalent values: 1 grain is approximately equal to 64.8 mg. Since you have administered one tablet of 64.8 mg of phenobarbital, you have delivered exactly 1 grain of the drug.

To elaborate, the calculation is relatively straightforward. Given that 1 grain = 64.8 mg, and you administered a dose of 64.8 mg, the simple division (64.8 mg / 64.8 mg/grain) reveals that the patient received 1 grain.