Noninvasive Estimation of the Severity of Aortic Stenosis
نویسندگان
چکیده
منابع مشابه
Noninvasive Estimation of the Severity of Aortic Stenosis: Going Beyond Bernoulli.
Ever since the original reports by Hatle et al, echocardiography has been the mainstay for diagnosing the severity of aortic stenosis noninvasively. They reported that the modified Bernoulli equation could be applied to estimate the pressure drop across a valve and that the continuity equation could be used to estimate its area. The behavior of fluids is described by the Navier–Stokes different...
متن کاملComparison of invasive and noninvasive assessment of aortic stenosis severity in the elderly.
BACKGROUND Aortic valve area (AVA) in aortic stenosis (AS) can be assessed noninvasively or invasively, typically with similar results. These techniques have not been validated in elderly patients, where common assumptions make them most prone to error. Accurate assessment of AVA is crucial to determine which patients are appropriate candidates for aortic valve replacement. METHODS AND RESULT...
متن کاملAssessing the severity of aortic stenosis.
The height of the "a" wave of the apexcardiogram was evaluated as a marker for critical aortic stenosis in patients over 40. Critical aortic stenosis was defined as an aortic valve area < .75 cm2 with no more than mild aortic insufficiency. Phonocardiograms and apexcardiograms were performed on 72 patients with catheterization proven aortic stenosis and on 14 normal controls, all over age 40. T...
متن کاملanalysis of reading comprehension needs of the students of paramedical studies: the case of the students of health information management (him)
چکیده ندارد.
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ژورنال
عنوان ژورنال: Circulation: Cardiovascular Imaging
سال: 2017
ISSN: 1941-9651,1942-0080
DOI: 10.1161/circimaging.116.005967