Assertion: vasodilator | /r/HasProperty | useful
Facets:
Source sentences:
text: They note that vasodilators have been considered useful for treating asymptomatic, chronic, severe aortic regurgitation since a paper by Scognamiglio et al in 1994 reported that nifedipine reduced or delayed the need for valve surgery but also note that the use of digoxin as the control in this study has been questioned.