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What is Atrial Fibrillation (AFib)? Causes, Symptoms & Treatment Options

Atrial Fibrillation (AFib) is a common yet potentially serious heart rhythm disorder affecting millions of people worldwide. Often referred to as an irregular heartbeat, AFib can lead to major health complications like stroke, heart failure, and other heart-related conditions if left untreated.

In this guide, we’ll walk you through the symptoms of Atrial Fibrillation, what causes it, and the best available treatments to manage and control this condition.


What is Atrial Fibrillation?

Atrial Fibrillation is a type of arrhythmia where the heart’s upper chambers (atria) beat irregularly and often too fast. This disrupts the flow of blood and can cause clots, increasing the risk of stroke or heart attack.

AFib may occur occasionally, last for hours or days, or become a permanent heart rhythm problem if not managed properly.


Common Symptoms of Atrial Fibrillation

Recognizing the symptoms of Atrial Fibrillation in adults is crucial for early diagnosis and treatment. These may include:

  • Rapid or irregular heartbeat (palpitations)

  • Fatigue and weakness

  • Dizziness or feeling lightheaded

  • Shortness of breath

  • Chest pain or discomfort

  • Reduced exercise tolerance

It’s also possible to have silent Atrial Fibrillation—a form without noticeable symptoms—which can still lead to serious health risks.


Causes and Risk Factors of Atrial Fibrillation

Understanding the causes of Atrial Fibrillation helps in effective prevention and management. Some common causes and risk factors include:

  • High blood pressure (hypertension)

  • Coronary artery disease

  • Heart valve problems

  • Overactive thyroid (hyperthyroidism)

  • Excessive alcohol or caffeine intake

  • Sleep apnea

  • Age over 60

  • Family history of arrhythmia

Chronic conditions such as diabetes, obesity, and prior heart surgery also increase your risk.


How is Atrial Fibrillation Diagnosed?

If you suspect an irregular heartbeat, your doctor may use several diagnostic tools to confirm Atrial Fibrillation:

  • Electrocardiogram (ECG or EKG): Records electrical activity of the heart.

  • Holter monitor: A wearable device that tracks heart rhythm over 24–48 hours.

  • Echocardiogram: Uses ultrasound to view heart structure and function.

  • Blood tests: To rule out thyroid problems or other underlying conditions.


Best Treatment Options for Atrial Fibrillation

The goal of Atrial Fibrillation treatment is to restore normal heart rhythm, control the heart rate, and reduce stroke risk. Treatment plans vary depending on the type and severity of AFib, but may include:

1. Medications
  • Antiarrhythmic drugs to maintain normal rhythm

  • Beta-blockers or calcium channel blockers to slow the heart rate

  • Blood thinners (anticoagulants) to prevent blood clots and stroke

2. Cardioversion

A non-surgical procedure that uses electric shocks to restore a normal heart rhythm.

3. Catheter Ablation

A minimally invasive treatment where heat or cold energy is used to destroy small areas of heart tissue causing the irregular signals.

4. Surgical Options

Procedures like the Maze surgery or Left Atrial Appendage Closure (LAAC) may be used in more severe or persistent cases.


Lifestyle Changes to Manage Atrial Fibrillation Naturally

In addition to medical treatment, managing AFib naturally through lifestyle changes can greatly improve your heart health:

  • Eat a heart-healthy diet (low in sodium and saturated fats)

  • Avoid excessive caffeine and alcohol

  • Exercise regularly (with doctor’s guidance)

  • Manage stress through relaxation techniques

  • Quit smoking

  • Monitor and control blood pressure and diabetes


When to See a Heart Specialist

If you’re experiencing symptoms of Atrial Fibrillation or have risk factors, don’t delay. Early diagnosis and personalized treatment can reduce complications and improve your quality of life.


 Book Your Appointment with ONUS HEART INSTITUTE

Take control of your heart health today. Our team of experienced cardiologists at ONUS HEART INSTITUTE specializes in diagnosing and treating Atrial Fibrillation with the latest medical technology and compassionate care.

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