peripheral canula insertion

Question 1

What are common reasons to insert a canula?

Answer 1

Contrast for Radiology investigations
Fluids
Electrolytes
Medications
Blood products
Blood sampling if performed BEFORE cannula is flushed and/or used

Question 2

What are the associated risks of canulation?

Answer 2

Infection - local (phlebitis or abcess) or systemic (bacteraemia, septicaemia)​

Local tissue trauma​ -bruising, pain, thrombophlebitis​

Extravasation​ - fluid/medication collecting in tissues​ or
possible tissue necrosis​

Question 3

What anaesthetic can be used for canulation?

Answer 3

1% lidocaine injection or Ametop® Gel

Question 4

Before inserting a canula what must you do?

Answer 4

Confirm patient ID and check for allergies
Provide clinical rationale for cannula
Explore patient’s prior experience of having a cannula
Explain the procedure, including benefits and how you would mitigate common risks
Gain your patient’s consent

Question 5

Which sodium chloride do we use?

Answer 5

0.9% NaCl in a pre-filled syringe

Question 6

What is the relation between the gauge number and the lumen of the needle?

Answer 6

The lower the gauge number = the larger the lumen

Question 7

What are the common veins for canulation?

Answer 7

Basilic ( little finger side)
Cephalic ( thumb side)
Median cubital ( ACF)

Question 8

How far above the intended canulation side should a tourniquet be applied?

Answer 8

7-10cm

Question 9

WHat angle should the canula be inserted?

Answer 9

30 degrees
but may vary depending on the depth of the vein

Question 10

Which form must be completed after inserting a canula?

Answer 10

Drug Prescription & Administration Record (DPAR)

Question 11

What important information should be documented after cannulation?

Answer 11

Cannula site & size
Date and time of cannulation
Name of Inserter