Arterial thrombosis is a blood clot in an artery, which can be very serious because it can stop blood reaching important organs.
Arteries are blood vessels that carry blood from the heart to the rest of the body and the heart muscle.
Symptoms and risks of arterial thrombosis
A blood clot doesn’t usually have any symptoms until it blocks the flow of blood to part of the body.
This can cause several serious problems, including:
- Heart attack – when blood flow to the heart muscle is suddenly blocked, causing chest pain, shortness of breath and dizziness
- Stroke – when blood flow to the brain is cut off; the main symptoms are the face dropping on one side, weakness in one arm and slurred speech.
- Transient ischaemic attack (TIA) or “mini-stroke” – when blood flow to the brain is temporarily blocked, causing short-lived stroke symptoms
- Critical limb ischaemia – when the blood supply to a limb is blocked, causing it to become painful, discoloured (either pale or blue) and cold
These conditions are all medical emergencies. Get medical help straight away if you or someone in your care is experiencing these symptoms.
Causes Of Arterial Thrombosis
Arterial thrombosis usually affects people whose arteries are clogged with fatty deposits. This is known as atherosclerosis.
These deposits cause the arteries to harden and narrow over time and increase the risk of blood clots.
The following can increase your risk of developing atherosclerosis:
- Getting older
- An unhealthy diet
- lack of exercise
- being overweight or obese
- regularly drinking excessive amounts of alcohol
- other conditions, including high blood pressure, high cholesteroland diabetes
- a family history of atherosclerosis
- being of South Asian, African or African-Caribbean descent
Sometimes arterial thrombosis can be due to a condition that makes your blood more likely to clots, such as atrial fibrillation or antiphospholipid syndrome.
Reduce Your Risk Of Arterial Thrombosis
It’s not possible to prevent blood clots entirely, but you can reduce your risk by lowering your risk of atherosclerosis.
The main things you can do are:
- Stop smoking
- Have a healthy diet
- Exercise regularly
- Maintain a healthy weight – read advice about losing weight
- Cut down on your alcohol consumption
If you’re at a high risk of getting a blood clot, your doctor may also recommend taking medication such as:
- Statins for high cholesterol
- Medicines for high blood pressure
- Medicines to reduce the risk of your blood clotting – for example, anticoagulants (such as warfarin) and antiplatelets (such as low-dose aspirin or clopidogrel)
Treatments For Arterial Thrombosis
If you develop arterial thrombosis, it may need to be treated with medication or surgery.
- Injections of a medicine called a thrombolytic that can dissolve some blood clots
- Intervention radiology offers the minimally invasive treatment options in the form of clot removal without open surgery.