Did you develop atrial fibrillation after coronary artery bypass graft (CABG) surgery?

This study will examine whether adding oral anti-blood clotting medicines to anti-platelet medicines (such as aspirin) helps prevent stroke and other complications in people who develop atrial fibrillation after CABG surgery. To participate in this study, you must be at least 18 years old and have been diagnosed with atrial fibrillation after having CABG surgery. The study is located in 63 places in 22 states, the District of Columbia, Canada, and Germany. View more information about Anticoagulation for New-Onset Post-Operative Atrial Fibrillation After CABG (PACES).

Do you know someone who will be having heart surgery?

This study aims to identify what genetic patterns might cause atrial fibrillation and other adverse events that happen after heart surgery. To participate in this study, you must be between 20 and 90 years old. The study is in three locations in Massachusetts and Texas. View more information about Identification of Genomic Predictors of Adverse Events After Cardiac Surgery (CABGGenomics).

Are you being treated for a chronic health condition in Wisconsin?

This study assesses an online program for people 65 and older who have some combination of diabetes, high blood pressure, high blood cholesterol, COPD, obesity, congestive heart failure, chronic kidney disease, arrhythmia, pulmonary heart or vascular disease, chronic pain, and arthritis. Follow-up surveys will help researchers evaluate the effectiveness of the care and support offered through the online program and determine if it decreases the use of health care services and improves health measures. To participate in this study, you must be at least 65 years old and be receiving treatment for at least three chronic conditions at a University of Wisconsin health clinic. This study is located in Madison, Wisconsin. View more information about Multiple Chronic Conditions for Older Adults.

Do you have heart disease that requires an ICD to prevent sudden cardiac arrest?

This study aims to learn what signs distinguish patients who have a higher risk of an arrhythmia that leads to sudden cardiac arrest. Researchers plan to track patients with a recent ICD replacement for 10 years. To participate in this study, you must be between 18 and 85 years old. This study is located in Washington, D.C.; Baltimore, Maryland; and Richmond, Virginia. View more information about Prospective Observational Study of the ICD in Sudden Cardiac Death Prevention (PROSe-ICD).

Are you a stroke survivor?

This study aims to develop an app for smartwatches and smartphones to test several atrial fibrillation monitoring devices for patients who have had a stroke or transient ischemic attack. To participate in this study, you must be at least 50 years old and have been admitted to the UMass Memorial Medical Center for a stroke or TIA. The study is located in Worcester, Massachusetts. View more information about Pulsewatch: Smartwatch Monitoring for Atrial Fibrillation After Stroke.

Have you been treated for ventricular tachycardia?

This study tests the safety and effectiveness of a new tool for doing radiofrequency catheter ablations, a treatment for some conduction disorders. To participate in this study, you must be at least 18 years old and have ventricular tachycardia that has not gone away after treatment with medicine, ablation, and placement of an implantable cardioverter defibrillator (ICD). This study is located in Illinois and Minnesota. View more information about Saline Enhanced Radiofrequency (SERF) VT Ablation Early Feasibility Study (EFS) (SERF VT EFS).

Are you a Minnesota resident with hypertrophic cardiomyopathy?

This study aims to find out how common it is for people with hypertrophic cardiomyopathy to also have sleep apnea. Hypertrophic cardiomyopathy is a disease that causes the heart muscle to thicken. Participants will also wear a heart rhythm monitor to help researchers learn whether sleep apnea is linked to arrhythmia. The study seeks healthy volunteers as well as participants in the Hypertrophic Cardiomyopathy Registry. To participate in this study, you must not have had a catheter ablation procedure to treat atrial fibrillation, had surgery to replace your heart valves, or been treated for sleep apnea. The study is located in Rochester, Minnesota. View more information about Sleep Apnea and Hypertrophic Cardiomyopathy (HCM).

Are you being treated for atrial fibrillation?

This study aims to compare two types of ablation treatment for patients who continue to have symptoms of atrial fibrillation despite treatment with medicines. The two ablation procedures treat different areas of tissue. To participate in this study, you must be at least 21 years old. The study is located in Palo Alto and San Diego, California. View more information about Substrate Versus Trigger Ablation for Paroxysmal Atrial Fibrillation (SUBSTRATE).

Do you have a ventricular arrhythmia?