• Set Yourself Up For Success Webinar

    October 6, 2021 at 2 PM Eastern/11 AM Pacific
    SDN and Osmosis are teaming up to help you get set up for success this school year! We'll be covering study tips, healthy habits, and meeting mentors.

    Register Now!

  • Funniest Story on the Job Contest Starts Now!

    Contest starts now and ends September 27th. Winner will receive a special user banner and $10 Amazon Gift card!

    JOIN NOW
  • Site Updates Coming Next Week

    Site updates are coming next week on Monday, Wednesday, and Friday. Click the button below to learn more!

    LEARN MORE

Cannula vs. Catheter

About the Ads

baby.birdee

New Member
Oct 31, 2015
1
0
1
We use the terms catheterization and cannulation interchangeably in the US. This is a bit of a misnomer, since these 2 processes are NOT identical; however, the end-result of each is the same: a hollow tube is introduced into a lumen or cavity, and this space is connected to the outside world.

Dictionary aside, if you know how to place a peripheral IV, you know how to perform these procedures.
Here is my explanation of catheterization vs. cannulation as it relates to placing a peripheral IV, a procedure all med students are familiar with.

Vascular access is obtained through Cannulation with the Seldinger technique:
A 22-16 gauge needle is used to pierce the skin and proximal vessel wall. Upon visualizing a flashback of blood, the hollow IV cannula is threaded over-the-needle, and guided directly into the lumen.

Catheterization begins when the tip of the plastic IV cannula enters the vessel lumen. This process involves blindly pushing the flexible hollow cannula forward, past the needle, and deeper into the lumen of the vessel. In contrast to cannulation, there is no trochar (needle) to create an artificial passage for the catheter, and there is no "guide wire" directing the catheter's journey.
 
About the Ads
This thread is more than 5 years old.

Your message may be considered spam for the following reasons:

  1. Your new thread title is very short, and likely is unhelpful.
  2. Your reply is very short and likely does not add anything to the thread.
  3. Your reply is very long and likely does not add anything to the thread.
  4. It is very likely that it does not need any further discussion and thus bumping it serves no purpose.
  5. Your message is mostly quotes or spoilers.
  6. Your reply has occurred very quickly after a previous reply and likely does not add anything to the thread.
  7. This thread is locked.