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The Latest

Heart model and stethoscope.

Your Thyroid and the Risk of Atrial Fibrillation

If you have high-normal levels of thyroid hormone within the reference range, research now confirms that you face an increased risk of atrial fibrillation.

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What is Atrial Fibrillation?

Learn more about the basics of atrial fibrillation and if you might be at risk.

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The Connection Between Your Heart and Thyroid

Thyroid problems are a common cause of heart-related symptoms and conditions that increase your risk of heart attack, heart failure, and stroke.

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Sleep-Disordered Breathing Increases AFib Risk

In older men, two sleep abnormalities may increase the risk of atrial fibrillation and stroke.

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Atrial Fibrillation: A Major Suspect in Unexplained Stroke

As many as 8 of 10 patients with a stroke brought on by atrial fibrillation die or are disabled. That’s why recognizing afib early is so important.

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The Most Serious Arrhythmias

Irregular heartbeats can cause disruptive and frightening symptoms. In the worst-case scenario, they can trigger a potentially fatal cardiac arrest.

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Atrial Fibrillation: Are You at Risk?

Multiple factors can contribute to the development of the abnormal functioning of the heart’s chambers.

Stethoscope on the ECG.

What Is Atrial Fibrillation?

For the 2.6 million Americans who suffer from atrial fibrillation (AF or AFib), the sensation of a fast, irregular, and chaotic heartbeat all too often becomes a way of life—and may put their health at risk.

out of breath

Atrial Fibrillation: Symptoms and Causes

Not everyone who develops atrial fibrillation will experience symptoms, but for those who do, they can range from mild to severe.

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Wireless Pacemaker Gets FDA's OK

A newly approved 1-inch wireless pacemaker shaped like an oversized vitamin does away with the need for leads and invasive surgery.