Impact of left ventricular outflow tract ellipticity on the grading of aortic stenosis in patients with normal ejection fraction

Impact of left ventricular outflow tract ellipticity on the grading of aortic stenosis in patients with normal ejection fraction

The pathophysiology of paradoxical low-gradient (LG) severe aortic stenosis (SAS) remains controversial. As low transvalvular flow has been implicated, we sought to investigate the impact of left ventricular outflow tract (LVOT) ellipticity on the estimation of the LV stroke volume, the calculation...

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Veröffentlicht in:Journal of cardiovascular magnetic resonance 2017-03, Vol.19 (1), p.37-37, Article 37
Hauptverfasser: Maes, Frédéric, Pierard, Sophie, de Meester, Christophe, Boulif, Jamila, Amzulescu, Mihaela, Vancraeynest, David, Pouleur, Anne-Catherine, Pasquet, Agnès, Gerber, Bernhard, Vanoverschelde, Jean-Louis
Format: Artikel
Sprache:eng
Schlagworte:
Aged
Aged, 80 and over
Analysis
Aortic stenosis
Aortic Valve - diagnostic imaging
Aortic Valve - physiopathology
Aortic valve stenosis
Aortic Valve Stenosis - diagnostic imaging
Aortic Valve Stenosis - physiopathology
Cardiac output
Care and treatment
Continuity
Continuity equation
Echocardiography
Echocardiography, Doppler
Electrocardiography
Ellipticity
Evaluation
Female
Flow velocity
Grading
Heart
Heart Ventricles - diagnostic imaging
Heart Ventricles - physiopathology
Humans
Image Interpretation, Computer-Assisted
Magnetic resonance
Magnetic Resonance Imaging
Male
Mathematical analysis
Middle Aged
Patients
Predictive Value of Tests
Registries
Retrospective Studies
Severity of Illness Index
Stroke Volume
Ultrasonic imaging
Ventricular Function, Left
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Zusammenfassung:The pathophysiology of paradoxical low-gradient (LG) severe aortic stenosis (SAS) remains controversial. As low transvalvular flow has been implicated, we sought to investigate the impact of left ventricular outflow tract (LVOT) ellipticity on the estimation of the LV stroke volume, the calculation of the aortic valve area (AVA) by use of the continuity equation and on AS severity grading. We studied 190 consecutive patients (mean age: 72 ± 13 years; male: 57%) with SAS (indexed AVA 
ISSN:1097-6647
1532-429X
DOI:10.1186/s12968-017-0344-8