Dosage Calculation PN Fundamentals Online Practice Assessment 3.0.pdf file:///C:/Users/HP/Desktop/New%20folder%20(4)/Dosage%20Calcu
Dosage Calculation PN Fundamentals Online
Practice Assessment 3.0 Questions & Answers
1. Administering phenobarbital 6 mg/kg/day PO divided in equal doses every
12 hrs to a patient weighing 44 lb. Available 20 mg/5 mL. How many mL per
dose?
Answer 15 mL
Patient needs 6 mg per kg a day, in 2 doses that are 12hrs apart & is 44lb; FYI lb/2.2
= x kg
5mL = 20mg SO 1 mL = 4 mg
40lb/2.2 = 20kg so 6mg*20kg = 120mg a day OR 60mg per 12hr dose SO
60mg/4mg= 15mL
2. Administering cefaclor 500 mg PO every 12 hrs. Available cefaclor 250 mg/5
mL. How many mL per dose?
Answer 10 mL
Patient needs 500mg per dose & 5mL = 250mg SO
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,Dosage Calculation PN Fundamentals Online Practice Assessment 3.0.pdf file:///C:/Users/HP/Desktop/New%20folder%20(4)/Dosage%20Calcu
10mL = 500mg
3. Administering furosemide 20 mg IM. Available furosemide 10 mg/mL. How
many mL for the injection?
Answer 2 mL
Patient needs 20mg for the injection & 1mL = 10mg SO 2mL = 20mg
4. Administering morphine 4 mg IM. Available is 10 mg/mL. How many mL for
the injection?
Answer 0.4 mL
Patient needs 4mg for the injection & 1mL = 10mg SO 0.4mL = 4mg
(Desired*Quantity)/Have = X mL OR (4mg*1mL)/10mg = 0.4mL
5. Discard suspension how many days after reconstitution?
Answer 14 DaysDiscard suspension after 14 days
6. Administering codeine 20 mL oral solution. How many teaspoons (tsp) does
this equal?
Answer 4 tsp
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