Atrial fibrillation is the most common sustained heart rhythm disturbance. The upper chambers of the heart quiver chaotically instead of contracting, so the pulse becomes irregular and often fast.
It can come in episodes that stop by themselves, or be persistent. It is rarely dangerous minute to minute, but blood can pool and clot in the upper chambers, which raises the risk of stroke about fivefold. Treatment has two separate goals: preventing stroke and controlling symptoms.
Symptoms
- An irregular, fluttering or pounding heartbeat
- Breathlessness, especially on exertion
- Tiredness and reduced stamina
- Light-headedness
- Chest discomfort
- No symptoms, with an irregular pulse found by chance or by a smartwatch
Causes and risk factors
It becomes more common with age. High blood pressure is the leading associated condition, followed by heart valve disease, heart failure, coronary disease, obesity, sleep apnoea, diabetes and an overactive thyroid. Alcohol, particularly binges, is a well recognised trigger. Episodes can follow surgery or a chest infection. Endurance athletes have a somewhat higher risk. Sometimes no cause is found.
How it is diagnosed
- 12-lead ECG: Confirms the diagnosis when recorded during the irregular rhythm.
- Holter or patch monitoring: Records for 1 to 14 days to catch intermittent episodes and measure heart rate.
- Echocardiography: Assesses the valves, chamber size and pumping function, which guide treatment.
- Blood tests: Thyroid, kidney function, electrolytes and blood count.
- Stroke risk scoring: The CHA2DS2-VA or CHA2DS2-VASc score decides whether an anticoagulant is advised.
Treatment options
- Anticoagulation: Direct oral anticoagulants such as apixaban or rivaroxaban, or warfarin, reduce stroke risk by about two thirds. Aspirin is not an adequate substitute.
- Rate control: Beta blockers, diltiazem or verapamil, or digoxin slow the pulse and are enough for many people.
- Cardioversion: A brief controlled electric shock under sedation restores normal rhythm. Recurrence is common without other measures.
- Antiarrhythmic medicines: Flecainide, amiodarone and similar drugs help maintain normal rhythm, with monitoring for side effects.
- Catheter ablation: Pulmonary vein isolation by heat, freezing or pulsed field energy. Around 60 to 80 percent of people with intermittent AF are free of it at one year, and some need a repeat procedure.
- Left atrial appendage closure: A device option for people at high stroke risk who truly cannot take anticoagulants.
- Lifestyle measures: Weight loss, less alcohol, treating sleep apnoea and blood pressure control reduce episodes measurably.
When it is urgent
Call emergency services for signs of stroke: face drooping, arm or leg weakness, or speech difficulty. Also seek urgent care for chest pain, fainting, severe breathlessness or a very fast heartbeat that will not settle. If you take an anticoagulant, heavy or unexplained bleeding needs same-day attention.
Travelling to Türkiye for treatment
Catheter ablation is a planned procedure that fits a visit of roughly 5 to 7 days, and a second opinion on rhythm strategy can be given from your ECGs and echo report. Anticoagulant management and long-term follow-up belong with your own doctor. Do not stop anticoagulants around travel without advice, and bring a list of your medicines and recent ECGs.
Send your reports, scans and a short history and a Clinic-Y coordinator replies within 24 hours with suitable teams and written, all-inclusive proposals side by side. Reviewing your case is free.
Frequently Asked Questions
Is atrial fibrillation life-threatening?
Not usually in itself. The main danger is stroke, which anticoagulation largely prevents, and over years an uncontrolled fast rate can weaken the heart.
Will ablation let me stop blood thinners?
Often not. The decision depends on your stroke risk score, not on whether the rhythm seems normal afterwards.
Can my smartwatch diagnose it?
It can raise suspicion. Diagnosis needs an ECG tracing reviewed by a clinician.
Does it always get worse?
It tends to progress from short episodes to longer ones, but treating risk factors early slows this.