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Can thyroid disease cause atrial fibrillation?

Thyroid abnormalities directly affect the heart, so thyroid disease can cause atrial fibrillation. Watch this video to learn more about interventional cardiology from Suman Pasupuleti, MD at Citrus Memorial Hospital.
Can thyroid disease cause atrial fibrillation?
Thyroid disease is a definite cause of atrial fibrillation. In this video, Ronald Walsh, DO, of Largo Medical Center, explains why doctors should check their patient's thyroid when they have atrial fibrillation.
Can thyroid disease cause atrial fibrillation?
An overactive thyroid (hyperthyroidism) can lead to atrial fibrillation. Too much thyroid hormone can impair the ability of cells in your heart to transmit electrical impulses well. One in 10 people with an overactive thyroid experience atrial fibrillation. In many cases, bringing the thyroid problem under control can control the atrial fibrillation, too.

Patients with both an overactive AND underactive thyroid can have atrial fibrillation, an abnormal heart rhythm, but it is hard to identify whether the thyroid disease is the actual CAUSE of the atrial fibrillation, unless there are no other possible contributors.

Cardiologist James Ong, MD from West Hills Hospital & Medical Center explains the connection between atrial fibrillation and excess hormones produced by the thyroid.
Can Thryoid Disease Cause Atrial Fibrillation?
Kalyanam Shivkumar, MD
Allergy
It is possible for thyroid disease to cause atrial fibrillation (AFib), but not in most cases. If you are diagnosed with atrial fibrillation, your doctor will probably check your thyroid to make sure it’s functioning properly.  

Continue Learning about Atrial Fibrillation

Atrial Fibrillation

Atrial Fibrillation

Atrial fibrillation -- the most common type of cardiac arrhythmia -- causes an irregular heartbeat that can increase your risk for stroke and heart failure. Atrial fibrillation (AF or AFib) results from faulty signals produced by ...

the heart's electrical system, causing the upper portion of the heart to fibrillate, or contract rapidly and irregularly. AFib doesn't cause noticeable symptoms for everyone. For those who do experience symptoms, heart palpitations are common along with feeling weak, dizzy and tired. Learn more about atrial fibrillation with expert advice from Sharecare.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.