Question

PHARMACOLOGY

- solve the following problems using the formula Basic formula, ratio and proportion and Dimensional analysis.
- Write your answer on the space provided

- Order: Ranitidine 150 mg PO q12h

Available : Ranitidine 75 mg per tablet

Administer how many tablets per dose?_______________________

- Order: Furosemide 20 mg IM stat

Available : Furosemide 10 mg per ml

Administer how many ml per dose?___________________________

- Order: Phenytoin oral solution 0.25 g PO bid

Available : Phenytoin oral solution 125 mg per 5 ml

Administer how many ml per dose?_________________________________

Order: Valproic acid oral solution PO 15 mg per kg per day in two divided doses for a

pediatric patient who weighs 66 lb.

Available: Valproic acid oral solution 250 mg per 5 ml

- How many kilograms does the child weigh?______________________________
- How many milligrams per day should the child receive?____________________
- How many milligrams per dose should the child receive?___________________
- How many millilliters per dose should the child receive?____________________

Order: Gentamycin 2.5 mg per kg q8h IV for a pediatric patient who weighs 38 lb.

Available: Gentamycin 10 mg per ml

- How many kilograms does the child weigh?______________________________
- How many milligrams per dose will the child receive?___________________
- How many millilliters per dose will the child receive?____________________

Answer #1

Question no 1

Ordered dose(D) = 150 mg

Dose in hand ( H) = 75 mg

Quantity it is in ( Q) = 1 tablet

Amount to be administered (A) = ?

A= D×Q/ H

A= 150×1/75= 2

So 2 tablets has to be Given

Question no 2

Ordered dose(D) = 20 mg

Dose in hand ( H) = 10 mg

Quantity it is in ( Q) = 1 ml

Amount to be administered (A) = ?

A= D×Q/ H

A= 20×1/10

A= 2 ml is to be given to the patient

Question no 3

Ordered dose(D) = .25 grams( 0.25 gram =250 milligrams) that is × 1000

Dose in hand ( H) = 125 mg

Quantity it is in ( Q) = 5 ml

Amount to be administered (A) = ?

A= D×Q/ H

A= 250×5/125= 10

10 ml is to be administered

Order:
Valproic acid oral solution PO 15 mg per kg per day in two divided
doses for a
pediatric patient who weighs 66
lb.
Available:
Valproic acid oral solution 250 mg per 5 ml
How many kilograms does the child
weigh?______________________________
How many milligrams per day should the child
receive?____________________
How many milligrams per dose should the child
receive?___________________
How many millilliters per dose should the child
receive?____________________

A nurse is preparing to administer Ranitidine (Zantac)
5mg/kg/day PO divided equally every 12 hour to a child who weighs
41 pounds. An oral solution is available in 15mg/ml. How many mL
should the nurse give per dose?

Show calculations
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5. Rx: Furosemide 0.08 g.
Sig: tab ii po qam
Mitte: 30 days
Available: Furosemide tablets each containing
40 mg
Interpret the order:
____________________________________________________
Calculate the dose:
_________________________
Quantity to dispense:
_______________________
6. Rx: Dimenhydrinate 15 mg
Sig: 15 mg q 4 h
Mitte: 150 ml
Available: Dimenhydrinate oral liquid
congaing 3 mg/ml
Interpret the order:
_____________________________________________________
Calculate the dose:
_________________________
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100 mL of Drug A? (Round to the nearest tenth if applicable).
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Available: Ketorolac 50 mg/mL. How many mL will you
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Medication available is Enoxaparin 80 mg/mL. Patient weighs 196 lb.
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Medication available is Tobutemide 250 mg/scored tablet.
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