Assertion: atrial fibrillation | /r/HasProperty | rapid heartbeat
Facets:
value: very
type: DEGREE
Source sentences:
text: Atrial fibrillation, often referred to as "afib", is an irregular heartbeat, a rapid heartbeat, or a quivering of the upper chambers of the heart, called the atria.
text: Atrial fibrillation is a very rapid irregular rhythm in the top two chambers of the heart.
text: Your risk of a heart attack is not increased due to atrial fibrillation, a rapid and irregular heartbeat that can cause symptoms requiring medical attention.