Metric Conversions, Giving The Correct Amount For Injection, Calculating Infusion Times, Solution Strength Worksheet With Answers Page 11
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22LDU Maths, Stats and Numeracy Support
Infusion Rate Calculations (ml/hour)
Example: A patient is to receive 4 Litres of normal saline over the next 8 hours. What
is the infusion rate in millilitres per hour (ml/hour)?
Answer: First convert the 4Litres to ml, which is 4000 ml then substitute it into the
formula:
ml/hour
Try the following questions
1) 800 ml of fluid in a burette is to be infused over 2 hours? What is the
infusion rate in millilitres per hour?
2) 500 ml of Hartmann’s solution is to be given to a teenager over 8 hours.
What is the infusion rate in ml/hour?
3) Over a period of 16 hours, a patient is to receive 2.4 Litres of dextrose 4%.
What is the infusion rate in ml per hour?
4) A doctor requests 0.75L of Crystalloid X to be infused over 6 hours using a
pump. At what rate in ml/hr should the infusion be administered?
5) Half a litre of Dextrose to be given over 4 hours. What is the rate in ml/hour?
6) The doctor prescribes 1000 ml of 5% Dextrose in normal saline to be infused
over 6 hours. How many ml per hour is this?
7) A patient receives 50ml of saline in half an hour. What is the rate in ml/hour?
8) What is the rate in ml/hour for 20 ml of fluid to be given over a quarter of an
hour?
numeracy@mdx.ac.uk
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