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  1. First Interstate Bank

    Dec 1, 2025 · Explore personal and business banking, loans, and digital tools backed by local service and community commitment.

  2. Atrial fibrillation - Symptoms and causes - Mayo Clinic

    Oct 3, 2025 · 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 …

  3. FIB Definition & Meaning - Merriam-Webster

    The meaning of FIB is a trivial or childish lie. How to use fib in a sentence. Synonym Discussion of Fib.

  4. A-Fib (Atrial Fibrillation) - What You Need to Know - Drugs.com

    Dec 9, 2025 · Care guide for A-Fib (Atrial Fibrillation). Includes: possible causes, signs and symptoms, standard treatment options and means of care and support.

  5. Atrial Fibrillation (A-Fib): Symptoms & Risk Factors | Brigham and ...

    Atrial fibrillation (A-fib) is a type of arrhythmia (abnormal heartbeat) that affects almost five million Americans. It often originates in the left atrium (the upper left chamber of the heart). When …

  6. Atrial Fibrillation: Prevention, Treatment and Research

    Atrial fibrillation (often called “A-fib” or AF) is the most common type of abnormal heartbeat. It can be cause for concern since it dramatically increases the risk of stroke.

  7. What is Atrial Fibrillation? - American Heart Association

    Mar 26, 2025 · Atrial fibrillation is an irregular heartbeat, or arrhythmia. Atrial fibrillation, also known as AFib or AF, can lead to blood clots, stroke, heart failure and other heart-related …

  8. Atrial Fibrillation – Symptoms and Causes | Penn Medicine

    What is atrial fibrillation? Atrial fibrillation (AFib) is a common heart rhythm disorder where the heart’s upper chambers, called the atria, beat irregularly and out of sync with the lower …

  9. Understanding atrial fibrillation and its symptoms - UCLA Health

    Dec 6, 2024 · When someone has atrial fibrillation, it means the two upper chambers of the heart have ceased to function properly. It occurs due to a malfunction in a cluster of cells in the right …

  10. Understanding Atrial Fibrillation (A-Fib) | UMass Memorial Health

    Atrial fibrillation, or A-fib, is a common type of heart arrhythmia. It causes fast, chaotic electrical signals in the atria.