Question

A doctor administers a drug to a 38​-kg ​patient, using a dosage formula of 50 ​mg/kg/day. Assume that the drug is available in a 100 mg per 5 mL suspension or in 500 mg tablets.
a. How many tablets should a 38​-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?
a. The patient should take
nothing pills every four hours.
​(Type an integer or decimal rounded to the nearest hundredth as​ needed.)

Answer 1

Answer:

a. 0.63 tablet in every four hours.

b. 79 drops per hour.

Step-by-step explanation:

A doctor administers a drug to 38-kg patient, using a dosage formula of 50 mg/kg/day.

a. Per day requirement of drug for 38 kg patient = 50 × 38 = 1900 mg per day.

Now we will calculate the drug required in every four hours by unitary method.

∵ The drug was required by the patient in 24 hours = 1900 mg

∴ The drug required in 1 hour  = $\frac{1900}{24} hours$

∴  The required in 4 hours = $(\frac{1900}{24})4 = 316.67 mg$

Since size of the tablet is 500 mg therefore tablets for the dose of 316.67 mg will be$=\frac{316.67}{500}$=0.63 tablet in every four hours.

b. Since 100 mg drug is available in 5 ml. Therefore 1900 mg drug will be available in $1900(\frac{5}{100})= 95 ml$

Now 95 ml drug is to be given to the patient with a factor of 10 ggt/ml over a period of 12 hours. So flow rate will be = $\frac{95}{12}\times \frac{10drops}{1ml}= \frac{950}{12}=79.17\frac{drops}{hour}\simeq 79\frac{drops}{hour}$