123 Doppler assessment of aortic stenosis: reading the peak velocity is superior to velocity time integral
نویسندگان
چکیده
منابع مشابه
Delayed Time to Peak Velocity Is Useful for Detecting Severe Aortic Stenosis
BACKGROUND Time to peak velocity (TPV) is an echocardiographic variable that can be easily measured and reflects a late peaking murmur, a classic physical finding suggesting severe aortic stenosis (AS). The aim of this study was to investigate the usefulness of TPV to evaluate AS severity. METHODS AND RESULTS This study included 700 AS patients, whose aortic valve area (AVA) was <1.5 cm2, and...
متن کاملUsing Velocity-Encoded MRI and The Velocity-Time Integral Approach To Analyze the Aortic Valve in Patients with Aortic Stenosis: A Reproducibility Study
The purpose of this study is to define the reliability and repeatability of MRI as a routine method for quantifying the functional area of stenotic aortic valves. Using velocity-encoded MRI, flow proximal and distal to the aortic valve was measured in 20 patients. The flow data was analyzed using the velocity-time integral approach. Five of the patients underwent 2 identical MR examinations. Th...
متن کاملThe Influence of Emotional Stress on Doppler‐derived Aortic Peak Velocity in Boxer Dogs
BACKGROUND Subaortic stenosis (SAS) is a common congenital heart disease in Boxers. Doppler-derived aortic peak velocity (AoPV) is a diagnostic criterion for the disease. OBJECTIVES To investigate the influence of emotional stress during echocardiographic examination on AoPV in normal and SAS-affected Boxers. To evaluate the effects of aortic root diameters on AoPV in normal Boxers. DOGS: Two...
متن کاملThe relationship between phoria and the ratio of convergence peak velocity to divergence peak velocity.
PURPOSE The purpose of this study was to investigate the relationship between phoria and the dynamics of vergence eye movements as described by the ratio of convergence average peak velocity to divergence average peak velocity, termed the vergence peak velocity ratio. METHODS Phoria and vergence step responses were recorded. Three measures of phoria were assessed: baseline phoria, which is th...
متن کاملDoppler analysis of flow velocity profile at the aortic root.
This study of aortic root flow velocity profiles suggests that the flow velocity pattern is parabolic rather than flat as has been widely supposed. To analyze the distribution of flow velocity, a special ultrasound pulsed Doppler velocity flow meter, with a direct probe on the aortic wall, was designed. Sixteen patients, none with a diagnosis of aortic valve disease, were examined just before u...
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ژورنال
عنوان ژورنال: Heart
سال: 2017
ISSN: 1355-6037,1468-201X
DOI: 10.1136/heartjnl-2017-311726.122