Welcome to Atrial Fibrillation Association - US


Atrial Fibrillation Association - United States of America (AFA-US) is a non-profit organization which provides information, support and access to established, new or innovative treatments for Atrial Fibrillation (AFib).

Atrial Fibrillation (AFib) is the most common heart rhythm disorder (arrhythmia). It occurs when chaotic electrical activity develops in the upper chambers of the heart (the atria). As a result, the atria no longer beat in an organized, regular rhythm, so the patient's pulse is irregular and as a result, the pumping of the heart is less efficient. AFib affects approximately 2.5 million people in the United States and over five million in Western Europe.

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AFA-US is affiliated to AFA International, a global charity based in the UK. Some materials on this site are shared with AFA-UK.

AFA-US is also affiliated to STARS-US, a US registered non-profit organization 501© (3) charity, committed to improving the quality of life for individuals and their families coping with Syncope conditions.


Sign Against Stroke

Atrial Fibrillation Association (AFA) have launched the Global AF Charter at the World Heart Federation, World Congress of Cardiology Scientific Sessions in Dubai, to address the devastating affects of undiagnosed Atrial Fibrillation (AFib) and AFib-related strokes.

Read our press release

Download the Global AFib Charter


Major report on AFib launched by AFA

A major source of information for patients and healthcare professionals on all aspects of AFib, including urgent actions needed now to prevent untreated AFib from causing a stroke epidemic.


Read the AFib report

Calculate your personal risk of stroke because of AFib

Watch AFib animation >>


Sister organization STARS launches national campaign to tackle fatal heart problems

Kick starting the campaign Trudie Lobban, Founder & CEO of STARS-US and AFA will be touring New York today talking on the Daily Buzz, Conn Jackson show, MyFamilyMyLife and numerous other stations urging everyone to take fainting to heart. Find out more: www.takefaintingtoheart.org


As a non-profit we greatly rely on your donations to help us continue our work of raising awareness and providing information, support and access to established, new or innovative treatments for Atrial Fibrillation (AFib). All donations are tax deductible, and easy to secure - simply click on the "Donate" tab found on the left side of the home page. Thank you for your support.




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What is AF?

AFA Toolkit for Medical Professionals.