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  1. Atrial fibrillation - Symptoms and causes - Mayo Clinic

    Jan 14, 2026 · Atrial fibrillation (AFib) is an irregular and often very rapid heart rhythm. An irregular heart rhythm is called an arrhythmia. AFib can lead to blood clots in the heart. The …

  2. Atrial fibrillation - Diagnosis and treatment - Mayo Clinic

    Atrial fibrillation (AFib) may be diagnosed when a health checkup is done for another reason. To diagnose AFib, the healthcare professional examines you and listens to your heart.

  3. Mayo Clinic Minute: What is atrial fibrillation?

    Sep 23, 2019 · Atrial fibrillation interrupts a regular heartbeat. "In atrial fibrillation, instead of the atria squeezing in a normal, regular fashion, the atria beat irregularly and chaotically," says Dr. …

  4. Heart arrhythmia - Symptoms and causes - Mayo Clinic

    Oct 13, 2023 · Atrial fibrillation (AFib). Chaotic heart signaling causes a rapid, uncoordinated heartbeat. AFib may be temporary and start and stop on its own. But some episodes may not …

  5. Tachycardia - Symptoms and causes - Mayo Clinic

    Dec 15, 2023 · Jeff Olsen: Dr. Kusumoto says atrial fibrillation decreases the heart's blood pumping efficiency and puts a patient at higher risk for blood clots, heart failure, and stroke. In …

  6. Cardiac ablation - Mayo Clinic

    Feb 2, 2024 · Types Atrial fibrillation ablation Atrial flutter ablation AV node ablation Pulmonary vein isolation SVT ablation Ventricular tachycardia ablation

  7. Atrial fibrillation ablation - Mayo Clinic

    Apr 9, 2024 · Atrial fibrillation (AFib) is a heart rhythm disorder. In a typical heart, a group of cells called the sinus node sends electrical signals that start each heartbeat.

  8. Atrial tachycardia - Symptoms and causes - Mayo Clinic

    Symptoms The main symptom of atrial tachycardia is a very fast heartbeat. Typically during atrial tachycardia, the heart beats 150 to 200 times a minute. The fast heartbeat may come and go …

  9. Cardioversion - Mayo Clinic

    Jun 28, 2024 · Some people who have irregular heartbeats, such as AFib, have blood clots form in the heart. Shocking the heart can cause these blood clots to move to other parts of the body …

  10. Atrial flutter - Symptoms and causes - Mayo Clinic

    Aug 29, 2024 · A complication of atrial flutter is atrial fibrillation (AFib). About half of people with atrial flutter get AFib within three years. AFib increases the risk of blood clots and strokes. …