title: Effects of variations in flow on aortic valve area in aortic stenosis based on in vivo planimetry of aortic valve area by multiplane transesophageal echocardiography.
abstract: This study provides evidence that acute changes in stroke volume and cardiac output do not result in significant alterations in the anatomic AVA measured with multiplane TEE in patients with AS of moderate or severe degree. Thus, TEE could be useful in the assessment of severity of AS in both low- and high-output states.
authors.affiliation: Department of Medicine, New England Medical Center, Tufts University School of Medicine, Boston, Massachusetts 02111, USA.
authors.forename: J C
authors.initials: JC
authors.lastname: Tardif
authors.forename: D S
authors.initials: DS
authors.lastname: Miller
authors.forename: N G
authors.initials: NG
authors.lastname: Pandian
authors.forename: S L
authors.initials: SL
authors.lastname: Schwartz
authors.forename: G
authors.initials: G
authors.lastname: Gordon
authors.forename: R
authors.initials: R
authors.lastname: Tierney
authors.forename: M
authors.initials: M
authors.lastname: England
authors.forename: W
authors.initials: W
authors.lastname: Panza
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001021:Aortic Valve / Q000503:physiopathology*; D001024:Aortic Valve Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D001783:Blood Flow Velocity; D002114:Calcinosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D002302:Cardiac Output; D017548:Echocardiography, Transesophageal / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume; D013499:Surface Properties