how do i figure this out? please help.

Chemistry
Tutor: None Selected Time limit: 1 Day

med. is 800 mg, dose is 12 mcg/kg/min, patient wt: 198 lb, fluid volume: 500 ml. how many milliliters per hour?

Jan 31st, 2015
To get the number of milligrams per hour, you need to multiply the given dosage by the patient's weight, and then multiply by some conversion factors to get an answer in the units of milligrams per hour.

The calculation looks like this:

Dosage = (12 mcg/kg/min)(198 pounds)(0.4536 kg/pound)(60 min/hour)(1 mg / 1000 mcg)

Dosage = 64.67 mg/hour


Then, since it appears that you are mixing 800 mg of medication in 500 ml of fluid, the concentration of the fluid is 800 mg / 500 ml = 1.6 mg/ml.

To get the dosage in milliliters per hour, divide the dosage in mg/hour by this concentration:

(64.67 mg/hr) / (1.6 mg/ml) = 40.42 ml/hour




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Jan 31st, 2015

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