Drug calcs

Question 1

An infant who weighs 4kg is prescribed 0.2mg/kg (IV) of morphine sulphate. You have an ampoule of 10mg in 1ml. the volume to be administered is

a) 8 mls
b) 0.8 mls
c) 0.08 mls
d) 0.8 mgs

Answer 1

c) 0.08 mls

Question 2

A child who weighs 20 kgs is prescribed 300 mg of paracetamol. The stock supply is 120 mg in 5 mls. The volume to be administered is

a) 1.25mls
b) 125mls
c) 125mgs
d) 12.5mls

Answer 2

d) 12.5mls

Question 3

Match the following sequence of milligrams to micrograms 10.0mg, 0.012mg, 0.40mg, 0.08mg

a) 1000.0 micrograms, 120.0 micrograms, 400.0 micrograms, 8.0 micrograms

b) 10000 micrograms, 12.0 micrograms, 40.0 micrograms, 80.0 micrograms

c) 10000 micrograms, 12.0 micrograms, 400 micrograms, 80.0 micrograms

Answer 3

c) 10000 micrograms, 12.0 micrograms, 400 micrograms, 80.0 micrograms

Question 4

A child who has an arterial blood gas that depicts respiratory acidosis will show

a) pH is acidic, PaO2 is raised and PaCO2 is raised
b) pH is acidic, PaO2 is raised and PaCO is lowered
c) pH is acidic, PaO2 is lowered and PaCO2 is raised
d) pH is alkalotic, PaO2 is lowered and Pa CO2 is raised

Answer 4

c) pH is acidic, PaO2 is lowered and PaCO2 is raised

Question 5

A child is to receive Trilafon 24 mg po BD. The medication is available as 16 mg/5ml. how may ml will you administer

a) 3.3
b) .75
c) 7.5
d) 0.3

Answer 5

c) 7.5

Question 6

One litre of intravenous fluid is to be given over 4 hours. The giving set delivers 60 drops per ml. how many drops per minute should be given

a) 150
b) 250
c) 300
d) 160

Answer 6

b) 250

Question 7

Mrs Frederick is to have a blood transfusion of two units of packed cells, prior to surgery. She is charted 350 mls over three hours through a blood giving set with a drip factor of 15
How many drops per minute will you run the blood at

a) 20
b) 25
c) 30
d) 35

Answer 7

c) 30

Question 8

Hone has been prescribed plasmolyte 500 mls over 2 hours IV. The giving set has a drop factor of 10. The correct flow rate would be

a) 24 dpm
b) 42 dpm
c) 84 dpm
d) 48 dpm

Answer 8

b) 42 dpm

Question 9

An intravenous infusion of 500 ml dextrose/saline through a metriset infusion set (60 drops per ml) is ordered to run over 6 hours. Calculate the drops per minute

a) 137
b) 36
c) 60
d) 83

Answer 9

d) 83

Question 10

A injection of Morphone 7.5mg is required. Ampoules contain 10mg per ml. Calculate volume to be drawn up

a) 0.5 ml
b) 0.6 ml
c) 0.65 ml
d) 0.7 ml
e) 0.75 ml

Answer 10

e) 0.75 ml

Question 11

Your patient is charted 1 L normal saline 12 hourly via an IV line (drop factor 10). Calculate the correct drops per minute (d.p.m)

a) 8
b) 12
c) 14
d) 20 e) 24

Answer 11

c) 14

Question 12

If the drop factor is 15, how fast should an infusion of 1000 ml normal saline run over 10 hours

a) 15 dpm
b) 20 dpm
c) 25 dpm
d) 40 dpm

Answer 12

c) 25 dpm

Question 13

50mg is equal to

a) 0.5 gram
b) 5 grams
c) 5000 micrograms
d) 50,000 micrograms

Answer 13

d) 50,000 micrograms

Question 14

Aminophylline 350mg is prescribed. Each ampoule contains 250mg in 10ml. how much should be added to the intravenous solution

a) 12ml
b) 14ml
c) 16ml
d) 35ml

Answer 14

b) 14ml

Question 15

illian’s intravenous infusion of 300ml normal saline is due to run over 4 hours. The drop factor is 60. How many drops per minute must be given for the IV to be completed on time

a) 60 dpm
b) 75 dpm
c) 100 dpm
d) 47 dpm

Answer 15

b) 75 dpm

Question 16

The doctor has prescribed 500ml of IV fluid to be given over 10 hours. Using a soluset which delivers 60 drops per ml, calculate the rate in drops per min

a) 48
b) 50
c) 52
d) 54

Answer 16

b) 50

Question 17

The nurse asks you to check some pain relief for Mr. Martin’s severe chest pain. This prescription is for morphine 6mgs every 2 hours. The stock available is morphine 10mg in 1 ml. calculate the correct amount

a) 0.5ml
b) 0.6ml
c) 1 ml
d) 1.3ml

Answer 17

b) 0.6ml

Question 18

The doctor prescribes heparin 7,500 i.u subcutaneous BID. The vial contains heparin 25,000 units/ml. what volume should be given s.c

a) 0.2ml
b) 0.3ml
c) 0.4ml
d) 0.7ml

Answer 18

b) 0.3ml

Question 19

Mrs Phillips is prescribed 1 litre of normal saline .9% over 6 hours. This is to be delivered via a soluset which has a drop factor of 60. Calculate the correct drops per minute

a) 100
b) 125
c) 167
d) 180

Answer 19

c) 167

Question 20

A patient has been prescribed morphine 8 mg 2-3 hourly PRN for pain. Unit stock of morphine is 10 mg in 1 mL. How much morphine should be drawn up for the patient?
a) 0.08 mL.
b) 0.25 mL.
c) 0.80 mL.
d) 0.75 mL.

Answer 20

c) 0.80 mL.

Question 21

A patient has one litre of fluid running intravenously every 12 hours. The drop factor is 60 drops per mL. How many drops per minute should be given?
a) 68 drops per minute.
b) 83 drops per minute.
c) 96 drops per minute.
d) 120 drops per minute.

Answer 21

d) 120 drops per minute.

Question 22

A child weighs 22.4 kg, and the prescription is for 24 mg/kg body weight. The medication comes at the strength of 50 mg/mL. Calculate how many mL (to one decimal place) of the medication the child should receive.
a) 7.5 mL.
b) 8.5 mL.
c) 9.8 mL.
d) 10.8 mL.

Answer 22

d) 10.8 mL.