It is what the term "blunt AVF needle" implied..... an AVF needle that is blunt...
Sample of a sharp AVF needle
Sample of a blunt AVF needle
Pictures from: http://www.nipro-europe.com/Biohole.asp
So how does one cannulate without a cutting edge.......? So continue reading.......
The "Blunt AVF Needling"
Who can blunt AVF needling be carried out on....? Anyone with a native AVF and not one with an artificial graft can undergo blunt AVF needling. Patient should have a satisfactory level of personal hygiene.
What is a "tract"
The tract is a passage from the outer skin to the vessel.This tract is formed when repeated cannulations are carried out over and over again. After sometime, the injuries of the inner surface of the tract is minimised and the tract is formed. This tract is similar to the tract of a earring tract.
Who can create a tract.....
The "Cannulator"
A cannulator is an experienced trained treatment practitioner whom has the consistency and ability to cannulate successfully any AVF. Once the cannulaor has been identified, he/she is give that task to create the tract on a patient for blunt AVF needling.
The cannulator is THE person whom shall cannulate the selected patient each and every time while the tract is being developed. The cannulator needs to cannulate at the same spot, same angle and same depth every time when the patient comes for treatment for the next 8-10 treatment (more if patients are poor healers).
The "Site"
A clean site for each arterial and venous cannulation points are selected which is straight, level and with a vessel prominently visible with no scars or aneurysm is chosen.
Initially a sharp AVF needle of 17G is recommended to cannulate the patient when the tract is being created.
During this crucial period, no one other than the cannulator can cannulate the patient. Should he/she is not available or when an infiltration has occurred than cannulate away (preferable more than 1 inch) from the intended sites.
to be contd......
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