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Atrial Fibrillation clinical trials recruiting in the U.S.

107 studies for Atrial Fibrillation are recruiting participants at sites across the United States.

Atrial fibrillation (AF or AFib) is the most common type of arrhythmia (irregular heartbeat). Read about symptoms and treatment.

Cities with the most studies

• New York City, NY21 studies
• Boston, MA17 studies
• Cleveland, OH17 studies
• Atlanta, GA16 studies
• Jonesboro, AR12 studies
• Philadelphia, PA12 studies
• Chicago, IL12 studies
• Ann Arbor, MI11 studies
• Columbus, OH10 studies
• Cincinnati, OH10 studies
• Pittsburgh, PA10 studies
• Austin, TX9 studies
• Los Angeles, CA9 studies
• Houston, TX9 studies
• Dallas, TX9 studies
• Indianapolis, IN9 studies
• Orlando, FL9 studies
• St. Louis, MO9 studies
• Queens, NY9 studies
• Washington, DC8 studies
• Aurora, CO8 studies
• Evanston, IL8 studies
• New Orleans, LA8 studies
• Overland Park, KS8 studies
• Birmingham, AL7 studies
• Salt Lake City, UT7 studies
• Oklahoma City, OK7 studies
• Miami, FL7 studies
• Sarasota, FL7 studies
• Tampa, FL7 studies
• Jacksonville, FL7 studies
• Ventura, CA7 studies
• Baltimore, MD7 studies
• San Francisco, CA7 studies
• The Bronx, NY7 studies
• San Diego, CA7 studies
• Huntington Beach, CA7 studies
• Durham, NC7 studies
• Louisville, KY6 studies
• Detroit, MI6 studies

By state

• Alabama11 studies
• Arizona10 studies
• Arkansas14 studies
• California30 studies
• Colorado12 studies
• Connecticut5 studies
• District of Columbia5 studies
• Florida22 studies
• Georgia17 studies
• Illinois22 studies
• Indiana12 studies
• Iowa8 studies
• Kansas11 studies
• Kentucky11 studies
• Louisiana12 studies
• Maine5 studies
• Maryland11 studies
• Massachusetts19 studies
• Michigan20 studies
• Minnesota9 studies
• Missouri12 studies
• Nebraska3 studies
• New Jersey10 studies
• New Mexico3 studies
• New York33 studies
• North Carolina15 studies
• Ohio30 studies
• Oklahoma8 studies
• Oregon4 studies
• Pennsylvania19 studies
• South Carolina8 studies
• South Dakota3 studies
• Tennessee12 studies
• Texas24 studies
• Utah10 studies
• Virginia15 studies
• Washington10 studies
• West Virginia3 studies
• Wisconsin8 studies

Recently updated studies

From ClinicalTrials.gov, data retrieved Oct 5, 2026. Each study sets its own eligibility; the study team decides who can join.