The jet centerline velocity decay method for noninvasive calculation of aortic regurgitant volume
نویسندگان
چکیده
منابع مشابه
Automated quantification of aortic regurgitant volume and regurgitant fraction using the digital colour Doppler velocity profile integration method in patients with aortic regurgitation.
BACKGROUND The recently introduced automated cardiac flow measurement (ACM) technique provides a quick and an accurate automated calculation of stroke volume and cardiac output. This is obtained by spatio-temporal integration of digital Doppler velocity profile data. OBJECTIVE To evaluate the use of the ACM method in the non-invasive assessment of aortic regurgitant volume and per cent regurg...
متن کاملCARDIOVASCULAR MEDICINE Automated quantification of aortic regurgitant volume and regurgitant fraction using the digital colour Doppler velocity profile integration method in patients with aortic regurgitation
Background: The recently introduced automated cardiac flow measurement (ACM) technique provides a quick and an accurate automated calculation of stroke volume and cardiac output. This is obtained by spatio-temporal integration of digital Doppler velocity profile data. Objective: To evaluate the use of the ACM method in the non-invasive assessment of aortic regurgitant volume and per cent regurg...
متن کاملA New Method for Noninvasive Quantification of Valvular Regurgitation Based on Conservation of Momentum
The noninvasive Doppler assessment of regurgitant volume from jet size is limited by the fundamental inequality of jet volume and regurgitant volume and by the dependence of jet dimensions on driving pressure and instrument settings for a given flow volume. Therefore, this study addresses the hypothesis that an equation could be derived from basic physical principles to quantify regurgitant vol...
متن کاملThe power-velocity integral at the vena contracta: A new method for direct quantification of regurgitant volume flow.
BACKGROUND Noninvasive quantification of regurgitation is limited because Doppler measures velocity, not flow. Because backscattered Doppler power is proportional to sonified blood volume, power times velocity should be proportional to flow rate. Early studies, however, suggested that this held only for laminar flow, not for regurgitant jets, in which turbulence and fluid entrainment augment sc...
متن کاملevaluation of tricuspid regurgitant jet velocity in thalassemia patients with splenectomy
conclusions the etiology of pah in thalassemia is multifactorial such as inflammatory mediators. also, the absence of the spleen plays an important role in developing a high trv and pah. results average age of the patients was 21.15 ± 6.68 years. no significant difference was observed in the pap between the 2 groups of thalassemia major and intermedia and also the 2 sex groups. indeed, 6.6% of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1996
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(96)82511-3