Medical Calculations Involving Dilution, Titration, Solution, and Medical Dosage

Question

Medical Calculations Involving Dilution, Titration, Solution, and Medical Dosage 1. Perform medical dosage calculations as indicated. Show all work and convert units where required/ a) A 12mg/kg body mass/day dose of valporic acid is prescribed for a patient weighing 104kg. How much valporic acid should be administered daily? b) A patient is prescribed a 40mg dose of antibiotic to be taken twice a day. The only tablets available contain 0.08g of antibiotic. Calculate how a single dose should be administered.

Explanation / Answer

1).

a).

Given :

Per day dose = 12 mg / kg body

Daily dose of valporic acid

= 104 kg x (12 mg / 1kg )

= 1248 mg

Daily dose administered should be = 1248 mg

b).

Each tab contains = 0.08 g of antibiotic

Conversion of mass into mg

= 0.08 g x 1000 mg / 1 g

= 80.0 mg

Dose taken twice a day by patient = 40 mg

Singe dose = 40 mg / 2 = 20 mg

So each dose contains 20 mg

Now lets find out tablets for single dose.

Number of tablets for each dose

= 20 mg x 1 tablet / 80 mg

= ¼ tablet

So each does should need ¼ of tablet

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