Assertion: atrial fibrillation | /r/HasProperty | persistent
Facets:
Source sentences:
text: Atrial fibrillation may be paroxysmal or persistent.
text: Some patients get episodes of atrial fibrillation that come and go, known as paroxysmal atrial fibrillation, but others are constantly experiencing atrial fibrillation, known as persistent atrial fibrillation.