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  1. First Interstate Bank

    Nov 24, 2025 · Explore personal and business banking, loans, and digital tools backed by local service and community commitment.

  2. 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.

  3. 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 …

  4. 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 …

  5. Understanding Atrial Fibrillation (A-fib) | Veterans Affairs

    Atrial fibrillation (A-fib) is the most common type of arrhythmia. An arrhythmia is any problem with the speed or pattern of the heartbeat. A-fib causes the heart to beat in an irregular pattern, …

  6. Atrial Fibrillation (AFib) Signs, Symptoms and Treatment

    Feb 5, 2025 · Atrial fibrillation (AFib) is a common type of irregular heartbeat that affects an estimated five million Americans.

  7. 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 …

  8. Atrial Fibrillation - What Is Atrial Fibrillation? | NHLBI, NIH

    Nov 30, 2022 · Atrial fibrillation, also known as A-fib or AF, is one of the most common types of arrhythmias (irregular heart rhythms). Atrial fibrillation causes your heart to beat irregularly and …

  9. FIB | English meaning - Cambridge Dictionary

    FIB definition: 1. to tell a small lie that does not cause any harm: 2. a small lie that does not cause any harm…. Learn more.

  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.