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Nursing Calculations

Here is a link to maths resources on our Learning Lab website to help you with your nursing calculations. They cover decimals, fractions, numbers and percentages.

Arithmetic for nursing calculations

Finding the volume required: defining the formula

Link to defining the formula video

This video clearly explains the difference between the key concepts of Strength and Volume and how they are used in drug calculations.

Volume required:worksheet (pdf)
Tablets required:worksheet (pdf)
Nursing calculations formula sheet (pdf)

 


Finding the volume required: understanding the formula

link to understanding the formula video

This video explains how to use the formula to determine the volume required in drug calculations.

Volume required:worksheet (pdf)
Tablets required:worksheet (pdf)


Finding the volume required: calculating from the labels

Link to calculating from the labels video

This video explains how to make mental calculations of the volume required using the labels.

Volume required:worksheet (pdf)
Tablets required:worksheet (pdf)


Finding the volume required: need over have

Link to need over have video

This video explains the concept behind the Volume Required formula. This video provides an example of finding VR using a sports drink mixture.

Volume required:worksheet (pdf)
Tablets required:worksheet (pdf)


Using proportions with liquid solutions

Link to proportions video

This video describes the concentration of a liquid using the example of a sports drink solution. It uses equivalent fractions to find equivalent expressions of the concentration. It demonstrates how to find the drug strength (in milligrams) contained in a given volume of liquid.

Concentration, flow rate, hourly dosages:worksheet (pdf)
Volume received, running time, flow rate:worksheet (pdf)


Converting between large and small units

Link to converting between large and small fractions video

This video demonstrates conversions between large and small units and vice versa and how this affects the placement of the decimal point.


Medication dosage by bodyweight

link to medication dosage by weight video

This video explains how body mass determines dosage rates in drug calculations.

Paediatric medication dosages:worksheet (pdf)


The flowrate formula

Link to flowrate formula video

This video explains how to calculate the flowrate for intravenous infusions.

Flow rate, drip rate, volume:worksheet (pdf)


Managing fractions and decimals in the flowrate formula

Link to managing fractions video

This video follows on from the previous video by explaining how to manage fractions and decimals when calculating the flowrate.

Flow rate, drip rate, volume:worksheet (pdf)


Dropfactor: converting between millilitres and drops

Link to dropfactor video

This movie explains the formula for converting between millilitres and drops and vice versa.

Flow rate, drip rate, volume:worksheet (pdf)


Converting flowrates between mL/hr and dpm

Link to converting flowrates video

This movie explains the difference between the two units and flowrate conversion.

Flow rate, drip rate, volume:worksheet (pdf)


Solving problems using dimensional analysis

Link to dimensional analysis video

This movie explains the concepts of dimensional analysis and how it can be used to solve problems in drug calculations.