Mnemonic for IV cannula colours and gauges




IV cannulas color code and their gauges

There are almost 7 IV cannulas which are  Orange, Grey, Green, Pink, Blue, Yellow and Violet/Purple. their gauges rang from 26(violet) to 14(Orange).
These cannulas have the following uses

26G is used for the Childs/pediatrics/neonates.

Purple cannula



24G is used mostly  for neonates or pediatrics blood transfusions and infusion to older adults.

Yellow cannula


22G is used for routine blood transfusions and most infusion to neonates and older adults.


Blue cannula


20G is used for rapid fluid replacement, trauma and most infusions and blood transfusions.

Pink cannula


18G is used for rapid transfusions, trauma, rapid blood replacement.

Green cannula


16G is used for rapid transfusions, trauma, rapid blood replacement.

Grey cannula


14G is used  for rapid transfusions, trauma and surgery.

Orange cannula


Mnemonic for colours and gauges

So as shown in the drawing below the gauges of the cannulas is very much easy like from 26G to 14G just minus two from each gauge and you will get the second cannula gauge 
for example if we have 20 so minus 2 from it and you will get 18G same for others.

Color codes of cannula 

For colours as shown in above  title we have simple mnemonic in which we have a best Yemeni(guy from Yemen country) violinist in a great green park.
so the mnemonic for  cannula colours is,
On Great Green Park Best Yemeni Violinist.

Note:  Although as we go from 26 to 14 the numbers decreases but actually the diameter increases which means the flow will also increases for example the 14 gauge will have high flow as compare to the 26G








mr medico blogs,Mnemonic for Mnemonic for IV cannula colours and gauges,medicowesmoe, epomedicine,

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