Understanding Fibrillation

Introduction

Fibrillation is a rapid and irregular heartbeat caused by uncoordinated electrical activity in the heart. It can affect either the upper chambers (atria) or the lower chambers (ventricles).

Types of Fibrillation

  1. Atrial Fibrillation (AFib): This is the most common type and occurs when the atria beat chaotically instead of in a regular rhythm. It increases the risk of stroke and heart failure.
  2. Ventricular Fibrillation (VFib): A life-threatening condition where the ventricles quiver instead of pumping blood. This requires immediate medical intervention, often with defibrillation.

Causes and Risk Factors

  • High blood pressure
  • Heart disease (coronary artery disease, heart valve problems)
  • Excessive alcohol consumption
  • Thyroid disorders
  • Lung diseases
  • Electrolyte imbalances
  • Aging

Symptoms

  • Palpitations (rapid heartbeats)
  • Fatigue
  • Shortness of breath
  • Dizziness or fainting (especially in ventricular fibrillation)

Diagnosis and Treatment

Diagnosis:

  • Electrocardiogram (ECG): The primary test to detect fibrillation.
  • Holter monitoring: A portable ECG for continuous monitoring.
  • Echocardiogram: Imaging to assess the heart's structure and function.

Treatment:

  • Medications: Beta-blockers, anticoagulants, and antiarrhythmics.
  • Cardioversion: Electrical shock to restore normal rhythm.
  • Ablation therapy: Targeting problem areas with radiofrequency energy.
  • Implantable devices: Pacemakers or defibrillators for severe cases.

Prevention:

  • Maintain a healthy weight.
  • Control blood pressure and cholesterol.
  • Limit alcohol and caffeine intake.
  • Regular physical activity and a heart-healthy diet.

By understanding fibrillation, patients can manage their condition effectively and reduce complications.

Source recommendations

1. American Heart Association Guidelines on Atrial Fibrillation

  1. https://www.ahajournals.org/doi/10.1161/CIR.0000000000001193
  2. https://www.heart.org/en/health-topics/atrial-fibrillation
  3. https://professional.heart.org/en/science-news/2023-acc-aha-accp-hrs-guideline-for-the-diagnosis-and-management-of-atrial-fibrillation
  4. https://www.heart.org/en/health-topics/atrial-fibrillation/treatment-and-prevention-of-atrial-fibrillation/treatment-options-of-atrial-fibrillation-afib-or-af
  5. https://pubmed.ncbi.nlm.nih.gov/38033089/

2. European Society of Cardiology Guidelines on Atrial Fibrillation

  1. https://www.escardio.org/Guidelines/Clinical-Practice-Guidelines/Atrial-Fibrillation
  2. https://academic.oup.com/eurheartj/article/42/5/373/5899003
  3. https://www.escardio.org/static-file/Escardio/Guidelines/Documents/ehaa612.pdf
  4. https://academic.oup.com/eurheartj/article/45/36/3314/7738779
  5. https://pubmed.ncbi.nlm.nih.gov/20802247/

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