Not everyone with atrial fibrillation falls into one of the above groups. pulmonary embolism (a blockage in a blood vessel in your lungs).hyperthyroidism (overactive thyroid gland).congenital heart disease (heart defects at birth)Ītrial fibrillation is also associated with other medical conditions such as:.People with other heart conditionsĪtrial fibrillation is common in people with other heart conditions, such as: The exact cause of atrial fibrillation (AF) is unknown, but it becomes more common with age and affects certain groups of people more than others. A blood clot passing up to the arteries supplying the brain may cause a stroke.įor this reason, treatment may involve medication to control the heart rate or rhythm, and medication to prevent clots from forming in the blood.įind out how to treat atrial fibrillation and possible complications of having AF Clots from the atria may break off and go to other parts of the body. This is because when the atria in the heart do not contract properly there is a risk of blood clot formation. This condition increases your risk by about four to five times of having a transient ischaemic attack (TIA) or stroke. The condition can affect adults of any age or gender but:Ītrial fibrillation is more likely to occur in people with other conditions, like:įind out more about the causes of atrial fibrillation and how it's diagnosed What is the outlook with atrial fibrillation?Ītrial fibrillation is generally not life threatening, many people live normal healthy lives with this condition, but it can be uncomfortable and often needs treatment. The cause of atrial fibrillation is not fully understood, but it tends to occur in certain groups of people and may be triggered by certain situations, such as drinking excessive amounts of alcohol or smoking. Some people with atrial fibrillation have no symptoms and are completely unaware that their heart rate is irregular.įind out more about the symptoms of atrial fibrillation Why does atrial fibrillation happen and how common is it?Ītrial fibrillation is the most common heart rhythm disturbance and affects up to 800,000 people in the UK.
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