Atrial Fibrillation - Cardiovascular Disorders - Merck Manual
https://www.merckmanuals.com/professional/cardiovascular-disorders/specific-cardiac-arrhythmias/atrial-fibrillation
WEBAtrial fibrillation is a rapid, irregularly irregular atrial rhythm. Symptoms include palpitations and sometimes weakness, effort intolerance, dyspnea, and …
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