Hi, Dr. Murray here from the Cosmetic Injector Institute. Today I want to talk about one of the most feared complications in aesthetic injecting, and that’s vascular occlusion.
There are quite a few different mechanisms for how it happens. It can occur if you inject directly into an artery or a vein, and it can block that vessel, or the product can travel through the artery or vein and block it further along. It’s a bit like putting your foot on a hose. It stops the supply of blood to an area, and that area can undergo necrosis, which is death of tissue. It’s a genuinely frightening thing to see when it happens, and in the worst cases it can even travel to the eye and cause partial or full blindness.
What Is Vascular Occlusion?
Vascular occlusion is a blockage of blood flow caused by injectable product entering an artery or vein, either directly or by travelling through the vessel until it gets stuck further along. Once that happens, the tissue that depended on that blood supply is starved of oxygen. If the blockage isn’t cleared quickly, that tissue can undergo necrosis, and in rare but serious cases the blockage can reach vessels that supply the eye.
Why Does Vascular Occlusion Happen?
It happens because the needle or cannula ends up inside a blood vessel instead of the surrounding tissue, and product gets pushed into that vessel rather than around it. Sometimes it’s injected straight into the artery or vein and blocks it on the spot. Other times it travels through the vessel and blocks it downstream, which is why the effects aren’t always immediate or where you’d expect them.
How Do You Spot a Vascular Occlusion?
You spot it by watching for skin changes and pain that don’t fit the normal pattern of a treatment, because a true occlusion behaves differently from ordinary bruising or swelling. There was a study done in Vietnam showing that cases which did occur needed multidisciplinary support afterwards, meaning a whole team of doctors to manage it properly. That’s exactly what worries me about people working independently, or working with a practitioner who’s interstate or not very experienced. The treating practitioner (ideally a doctor) needs to be there orclose by, and needs a network of other doctors they can call on.
Can Vascular Occlusion Be Prevented?
Yes, prevention is the first and most important line of defence, and it comes down to a handful of simple habits rather than memorising every nerve and blood vessel in the face. You can get caught up trying to learn the exact path of this nerve or that vessel, but that’s not really the important bit. The important bit is knowing what not to do, knowing roughly where the vessels sit, and knowing how to avoid them. Some of the big ones are injecting on withdrawal, aspirating before you inject, and making sure you’re injecting down onto the bone. We go through all of this properly in the Cosmetic Injector Institute training,along with other tips and tricks I give all enrolled students.
We’ve never had a severe occlusion here, and I’ve personally never had one myself, because I stick to these fundamentals every time.
How Is Vascular Occlusion Treated?
Treatment starts with prevention, and if an occlusion does occur, it needs fast, experienced, hands-on management rather than guesswork. This is exactly why the doctor performing the treatment needs to be present, needs to be genuinely experienced, and needs a network of other doctors they can bring in immediately if things escalate. Necrosis can look terrible and still resolve well with the right early management, or it can look terrible and continue to cause real damage to the face if it isn’t handled properly. None of this is a reason to avoid injectables altogether. It’s a reason to avoid injecting badly, or being taught too quickly without a mentor standing behind you.
FAQ
What is vascular occlusion in injectable treatments?
It’s a blockage of blood flow caused by product entering an artery or vein during treatment, which can starve the surrounding tissue of blood supply.
What causes vascular occlusion?
It’s caused by the needle or cannula entering a blood vessel and product being injected directly into it, either blocking the vessel on the spot or travelling through it to block further along.
Can vascular occlusion cause blindness?
In rare and serious cases, yes. If the blockage reaches the vessels that supply the eye, it can cause partial or full vision loss.
How can vascular occlusion be prevented?
Through simple, consistent technique: injecting on withdrawal, aspirating before injecting, and injecting down onto the bone, combined with proper training and mentorship.
Is vascular occlusion treatable?
Yes, but it needs fast action from an experienced doctor with a network of other doctors on hand. Multidisciplinary support gives the best chance of a good outcome.
Does the risk of vascular occlusion mean I shouldn’t get injectables?
No. The risk is a reason to choose an experienced, well-supported injector, not a reason to avoid injectable treatments altogether.
If you’re a practitioner wanting to understand vascular occlusion properly, including the prevention techniques and mentorship that go with it, enrol with the Cosmetic Injector Institute to learn directly from Dr. Murray.
This article is general information only and does not replace individualized clinical training or medical advice. Any practitioner performing injectable treatments should seek proper accredited training and ongoing mentorship.