The coronary arteries come from the aorta and spread out over the surface of your heart like the branches of a tree, supplying your heart with oxygen and nutrients. The walls of the arteries are made up of 3 layers (an inner, middle and outer layer)
SCAD is an uncommon emergency condition in which a ‘tear’ happens within the layers of the wall of the artery. This leads to blood becoming trapped within the artery, forming a clot and causing a partial or complete blockage. This can lead to a possible heart attack, an abnormal heart rhythm or even sudden death, if not treated promptly.
Researchers are not fully sure what causes SCAD, but it is known that 80% of sufferers are women and 30% of those are nearing the end of a pregnancy or have recently given birth.
Most people with SCAD are otherwise healthy and might not have any risk factors for heart disease. It tends to occur in people between the ages of 19 to 64 years.
Other possible causes include:
Unfortunately, unlike coronary heart disease, it doesn’t seem to be preventable and happens out of the blue.
Coronary angiography may recognise the signs of SCAD, however, intravascular ultrasound or specialised screening is necessary for a definitive diagnosis.
The aim of treatment in SCAD is to restore blood flow to the heart muscle.
The most appropriate treatment will depend on the severity of the tear, its location, and of course your signs and symptoms.
If possible, allowing the tear to heal naturally, without any invasive procedures is ideal. Management using medications alone that can control blood pressure is often preferred. In some people, coronary stenting can also be used to restore blood flow to the heart. In some cases, bypass surgery may be necessary. However, the risk of complications is higher and the success rate lower.
Cardiac rehab is a very important part of SCAD recovery, especially if you were fit and well prior to the cardiac event. Loss of confidence is very common, and so exercising in a safe, controlled environment, is highly beneficial.
Risk of Recurrence
SCAD can recur, usually in a different coronary artery, so it is important to be aware of any signs or symptoms and act promptly. Lifestyle modifications to reduce pressure on the heart and coronary arteries should be adhered to.
Step by Step through Heart Attack – our patient information booklet
Angina – our guide from symptoms to treatment
Heart & Stroke Conditions A-Z – see our range of guides.