title: Doppler echocardiographic methods to estimate severity of aortic stenosis.
abstract: The continuity equation should be regarded as the Doppler echocardiographic gold standard for estimation of valve area in patients with aortic stenosis, but a quick, easy, and inexpensive screening test may be desirable in an era of medical cost containment. Aortic valve leaflet separation could be used as such a test. In fact, it could prove especially useful in cases where calculations using the continuity equation or the fractional shortening-velocity ratio are problematic.
authors.affiliation: Division of Cardiology, Long Island College Hospital, Brooklyn, New York, USA.
authors.forename: P
authors.initials: P
authors.lastname: Raggi
authors.forename: B C
authors.initials: BC
authors.lastname: Vasavada
authors.forename: E
authors.initials: E
authors.lastname: Rodney
authors.forename: A
authors.initials: A
authors.lastname: el-Jandali
authors.forename: O
authors.initials: O
authors.lastname: Dogan
authors.forename: T J
authors.initials: TJ
authors.lastname: Sacchi
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000000981:diagnostic imaging / Q000503:physiopathology; D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006328:Cardiac Catheterization; D015150:Echocardiography, Doppler / Q000295:instrumentation / Q000379:methods*; D005069:Evaluation Studies as Topic; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012680:Sensitivity and Specificity