Pharm Chapter 4 Calculating Drug Dosages
I liter is equal to? - (correct Answer) - 1,000 milliliters (mL)
100 mL (milliliters) is equal to? - (correct Answer) - 0.1 liter
A liter represents? - (correct Answer) - volume
Grams represent? - (correct Answer) - mass
1 gram is equal to? - (correct Answer) - 1,000 milligrams (mg)
500 mg is equal to? - (correct Answer) - 0.5 grams
What is the standard dose of albuterol? - (correct Answer) - 2.5 mg
When we dose, what measurement are we using? - (correct Answer) - GRAMS
The physicians order states to administer Drug A 1500 mg PO. The pharmacy only supplies this amount:
Drug A 500 mg. How many tablets do you give the patient? - (correct Answer) - 3
PO means? - (correct Answer) - By mouth
What is the dosage formula (proportions)? - (correct Answer) - Original Dose/ Per amount = Desired
Dose/ Per Amount
example: 500mg/1 tablet = 1500mg/ X >>> 1500mg/ 500mg = 500x/500mg >>> X= 3 tablets
Example test question: You have a dosage of a drug, each is 250 mg in strength. If the patient needs 0.5 g
of the drug, how many tablets should be administered? - (correct Answer) - 0.5g= 500mg so, 250mg/1 =
500mg/x >>> 250/250 = 500mg/ 250 >>> X= 2 tablets
Example test question: You are asked to administer 5 mg of Albuterol. You have a single dose ampule of
2.5 mg Albuterol. How many ampules do you give? - (correct Answer) - 2.5/1 = 5/X >>> 2.5x/2.5 = 5/2.5
>>> X = 2 ampules
What does U/mL mean? - (correct Answer) - Unites per milliliter, so 1000 U/mL is read "1000 units per
ONE milliliter"
Example test question: You are asked to administer 1.25 mg of Albuterol. You have a container of
5mg/mL of Albuterol. How much (mL) of Albuterol do you give? - (correct Answer) - 5mg/1mL =
1.25mg/X >>> 5mg/mL/5 = 1.25mg/5 >>> X = 0.25mL of Albuterol
The amount of diluent affects only.. what? - (correct Answer) - the amount of time required to
administer the drug; the amount of active drug is the same.
I liter is equal to? - (correct Answer) - 1,000 milliliters (mL)
100 mL (milliliters) is equal to? - (correct Answer) - 0.1 liter
A liter represents? - (correct Answer) - volume
Grams represent? - (correct Answer) - mass
1 gram is equal to? - (correct Answer) - 1,000 milligrams (mg)
500 mg is equal to? - (correct Answer) - 0.5 grams
What is the standard dose of albuterol? - (correct Answer) - 2.5 mg
When we dose, what measurement are we using? - (correct Answer) - GRAMS
The physicians order states to administer Drug A 1500 mg PO. The pharmacy only supplies this amount:
Drug A 500 mg. How many tablets do you give the patient? - (correct Answer) - 3
PO means? - (correct Answer) - By mouth
What is the dosage formula (proportions)? - (correct Answer) - Original Dose/ Per amount = Desired
Dose/ Per Amount
example: 500mg/1 tablet = 1500mg/ X >>> 1500mg/ 500mg = 500x/500mg >>> X= 3 tablets
Example test question: You have a dosage of a drug, each is 250 mg in strength. If the patient needs 0.5 g
of the drug, how many tablets should be administered? - (correct Answer) - 0.5g= 500mg so, 250mg/1 =
500mg/x >>> 250/250 = 500mg/ 250 >>> X= 2 tablets
Example test question: You are asked to administer 5 mg of Albuterol. You have a single dose ampule of
2.5 mg Albuterol. How many ampules do you give? - (correct Answer) - 2.5/1 = 5/X >>> 2.5x/2.5 = 5/2.5
>>> X = 2 ampules
What does U/mL mean? - (correct Answer) - Unites per milliliter, so 1000 U/mL is read "1000 units per
ONE milliliter"
Example test question: You are asked to administer 1.25 mg of Albuterol. You have a container of
5mg/mL of Albuterol. How much (mL) of Albuterol do you give? - (correct Answer) - 5mg/1mL =
1.25mg/X >>> 5mg/mL/5 = 1.25mg/5 >>> X = 0.25mL of Albuterol
The amount of diluent affects only.. what? - (correct Answer) - the amount of time required to
administer the drug; the amount of active drug is the same.
