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  1. Atrial fibrillation - Symptoms and causes - Mayo Clinic

    Mar 8, 2024 · 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 condition also increases the risk of stroke, heart failure and other heart-related complications.

  2. Atrial fibrillation - Diagnosis and treatment - Mayo Clinic

    Mar 8, 2024 · It's important to follow your atrial fibrillation treatment plan. If AFib isn't well controlled, it may lead to other complications, including stroke and heart failure.

  3. Atrial flutter - Symptoms and causes - Mayo Clinic

    Aug 29, 2024 · A person can have both atrial flutter and AFib. Atrial flutter may not cause symptoms. But some people may have a pounding, rapid heartbeat and chest pain. Fainting or almost fainting also may happen. Treatment for atrial …

  4. When atrial fibrillation (AFib) ablation timing impacts AFib …

    Jun 18, 2025 · The atria can remodel as a response to atrial fibrillation. This makes patients more prone to AFib, and harder to get patients out of this rhythm and keep them in normal sinus rhythm," says Dr. DeSimone. "The greater the remodeling, the more likely the structure and function of the atrium changes.

  5. Afibs -and- Left Atrial Enlargement - Mayo Clinic Connect

    Jun 12, 2025 · It also works the other way around: AF can lead to atrial enlargement, and at the same time collagen deposits, and fibrosis, and those can cause mitral valve prolapse.

  6. Atrial septal defect (ASD) - Symptoms and causes - Mayo Clinic

    Jan 23, 2024 · An atrial septal defect (ASD) is a hole between the heart's upper chambers. The heart problem is present at birth. It is a type of congenital heart defect.

  7. Mayo Clinic Q & A: Why a fluttering heart could lead to stroke

    May 29, 2025 · Atrial fibrillation is a common type of heart rhythm disorder where the heart doesn't beat efficiently. This makes the heart unable to pump enough blood out to the body with each …

  8. Holter Monitor Results - Mayo Clinic Connect

    Nov 29, 2024 · I think the SVT burden ( later identified by the EP as probable atrial tachycardia) was somewhere in the range of 15% or so, and the cardiologist tripled the dose of metoprolol, which helped. My symptoms matched the episodes of …

  9. Atrial tachycardia - Symptoms and causes - Mayo Clinic

    During an atrial tachycardia episode, the heart beats more than 100 times a minute. Then it returns to a heart rate of around 60 to 80 beats a minute. An episode may start slowly, or it may start suddenly and quickly. It can cause a pounding or racing heartbeat, lightheadedness, dizziness, and fainting. Atrial tachycardia is common.

  10. AFib after pacemaker - Mayo Clinic Connect

    Oct 31, 2024 · Analyses of risk factors and prognosis for new-onset atrial fibrillation in elderly patients after dual-chamber pacemaker implantation …