Cardiology

Mayo Clinic Minute: Watch for these heart arrhythmia red flags

A heart arrhythmia is an irregular heartbeat. It occurs when the electrical signals that tell the heart when to beat and pump blood aren't functioning properly. Some heart arrhythmias can be harmless and just bothersome, ...

Cardiology

New study uncovers major cause of deadly heart arrhythmias

Heart attacks scar the heart, leaving patients vulnerable to heart rhythm disorders that can lead to sudden death. While not all who have experienced a cardiac infarction will develop an arrhythmia, if they do, it will typically ...

Medications

Study shows hydroxychloroquine's harmful effects on heart rhythm

The malaria drug hydroxychloroquine, which has been promoted as a potential treatment for COVID-19, is known to have potentially serious effects on heart rhythms. Now, a team of researchers has used an optical mapping system ...

Medications

New drug molecule for treatment of atrial fibrillation

Scientists from the National University of Singapore (NUS) Department of Pharmacy have developed an improved pharmaceutical drug for the treatment of the most common heart rhythm disturbance—atrial fibrillation (AF). The ...

Cardiology

Light tames lethal heart disorders in mice and virtual humans

Using high-tech human heart models and mouse experiments, scientists at Johns Hopkins and Germany's University of Bonn have shown that beams of light could replace electric shocks in patients reeling from a deadly heart rhythm ...

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