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Estimation of Stroke Volume and Aortic Valve Area in Patients with Aortic Stenosis: A Comparison of Echocardiography versus Cardiovascular Magnetic Resonance by Ezequiel Guzzetti; Romain Capoulade; Lionel Tastet; Julio Garcia; Florent Le Ven; Marie Arsenault; Elisabeth Bédard; Eric Larose; Marie-Annick Clavel; Philippe Pibarot is a Medicine article available to read on EtoBox.
What is Estimation of Stroke Volume and Aortic Valve Area in Patients with Aortic Stenosis: A Comparison of Echocardiography versus Cardiovascular Magnetic Resonance about?
## Background: In aortic stenosis, accurate measurement of left ventricular stroke volume (sv) is essential for the calculation of aortic valve area (ava) and the assessment of flow status. current american society of echocardiography and european association of cardiovascular imaging guidelines suggest that measurements of left ventricular outflow tract diameter (lvotd) at different levels (at the annulus vs 5 or 10 mm below) yield similar measures of sv and ava. the aim of this study was to assess the effect of the location of lvotd measurement on the accuracy of sv and ava measured on transthoracic echocardiography (tte) compared with cardiovascular magnetic resonance (cmr). ## Methods: One hundred six patients with aortic stenosis underwent both tte and cmr. sv was estimated on tte using the continuity equation with lvotd measurements at four locations: at the annulus and 2, 5, and 10 mm below annulus. sv was also determined on cmr using phase contrast acquired in the aorta (sv), and a hybrid ava was calculated by dividing sv by the transthoracic echocardiographic doppler aortic velocity-time integral. comparison between methods was made using bland-altman analysis. ## Results:
Who reads Estimation of Stroke Volume and Aortic Valve Area in Patients with Aortic Stenosis: A Comparison of Echocardiography versus Cardiovascular Magnetic Resonance?
It is typically read by researchers, students, and practitioners in Medicine.
- Author
- Ezequiel Guzzetti; Romain Capoulade; Lionel Tastet; Julio Garcia; Florent Le Ven; Marie Arsenault; Elisabeth Bédard; Eric Larose; Marie-Annick Clavel; Philippe Pibarot
- Publisher
- Elsevier BV
- Published
- 2020
- Language
- EN
- Field
- Medicine (Health Sciences)