Are cannulas safer than needles?
Are cannulas safer than needles?
Conclusions: Cannulas, in all measured sizes except 27-gauge, required greater forces for intraarterial penetration compared with correspondingly sized needles, confirming the safety of 22- and 25-gauge cannulas; 27-gauge cannulas, however, required similar forces as 27-gauge needles, indicating that 27-gauge cannulas …
What is an injection cannula?
A small blunt tip cannula is a thin, flexible tube with a small opening on the side. Just like a sharp needle, it injects fillers. The advantage, however, is that the use of a cannula has shown to cause less potential damage to blood vessels.
How can you prevent facial arteries when injecting fillers?
To avoid vessel injury or compression, filler injections into the tip and dorsum should be in the preperiosteal and preperichondrial layers. Because the lateral nasal artery runs in the subdermal plexus 2 to 3 mm superior to the alar groove, injections into the sidewall should be above this landmark.
How can you prevent vascular occlusion with fillers?
Preventing Filler Embolus and Vascular Occlusion
- Know your anatomy.
- Aspirate.
- Inject small volumes.
- Inject slowly.
- Consider cannula use.
- Beware previous scarring or surgery.
- Product choice.
- Progress appropriately!
Why would you need a cannula?
The cannula is to give you medication or fluids that you are unable to take by mouth or that need to enter your blood stream directly. There is a small coloured cap on the outside of the cannula. It is important the cap remains closed to help prevent infection. What is a cannula?
When do you use a cannula?
Nasal cannulas are used to deliver oxygen when a low flow, low or medium concentration is required, and the patient is in a stable state.
What is the difference between needle and cannula?
Probably the most obvious difference between a needle and a cannula is that the tip of a needle is sharp while a cannula is blunt. One of the main issues when using a needle to administer dermal filler is the likelihood of swelling and bruising post-treatment.
Where should you not inject your face?
3D-anatomy of facial dangerous zones. The classical three main dangerous anatomical zones for filler injections referenced in the literature are the glabella and forehead, nasal and labial areas. The understanding of 3D-anatomy is essential to avoid vascular complications.
How quickly does necrosis occur after filler?
The symptoms of ischemia can occur immediately after the injection or several hours after the procedure. Here, the authors report three cases of necrosis after hyaluronic acid injection with the first symptoms presenting only several hours after the procedure.
