SOLUTION: A doctor administers a drug to a 31-kg patient, using a dosage formula of 47 mg/kg/day. Assume that the drug is available in a 100 mg per 5 mL suspension or in 400 mg tablets.

Question 1125010: A doctor administers a drug to a 31-kg patient, using a dosage formula of 47 mg/kg/day. Assume that the drug is available in a 100 mg per 5 mL suspension or in 400 mg tablets.
a. How many tablets should a 31-kg patient take every four hours?
b. The suspension with a drop factor of 10 ggt/mL delivers the drug intravenously to the patient over a twelve-hour period. What flow rate should be used in units of ggt/hr?

The answers are:
a. The patient should take 0.61 pills every 4 hours.
b. The intravenous suspension flow should be set to 30.35 ggt/hour.
Can someone help me figure out how to get these answers written out :)

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
31 kg*47mg/kg=1457 mg a day
6 times a day (every 4 hours) is 242.8 mg each time, and 242.8/400 is 0.607 or 0.61 pills every 4 hours
Over a 12 hour period, a patient should take 728.5 mg, half the above dose.
This is 60.7 mg an hour
That is 3/5 of 100 mg , so therefore 3 ml an hour
But each ml has 10 ggt, so this would be 30 drops an hour (a little more since it was 60.7 mg and not 60).
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