LOWER TOTAL ARTERIAL ELASTANCE AUGMENTS REGURGITANT VOLUME IN AORTIC REGURGITATION
نویسندگان
چکیده
منابع مشابه
Arterial elastance and heart-arterial coupling in aortic regurgitation are determined by aortic leak severity.
BACKGROUND In aortic valve regurgitation (AR), aortic leak severity modulates left ventricle (LV) arterial system interaction. The aim of this study was to assess (1) how arterial elastance (E(a)), calculated as the ratio of LV end-systolic pressure and stroke volume, relates to arterial properties and leak severity and (2) the validity of E(a)/E(max) (with E(max) the slope of the end-systolic ...
متن کاملAutomated 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 کاملDynamic nature of the aortic regurgitant orifice area during diastole in patients with chronic aortic regurgitation.
BACKGROUND The effective aortic regurgitant orifice area varies with aortic pressure in animal models of acute aortic regurgitation. The purpose of this study was to determine whether the aortic regurgitant orifice area changes during diastole in patients with chronic aortic regurgitation. METHODS AND RESULTS Two-dimensional and Doppler echocardiography were performed immediately before and a...
متن کاملInfluence of aortic pressure on effective regurgitant orifice area in aortic regurgitation.
BACKGROUND The regurgitant volume in aortic regurgitation is determined by the diastolic filling period, the pressure gradient between the left ventricle and aorta, and the hemodynamic size of the regurgitant orifice area. METHODS AND RESULTS To test the hypothesis that the aortic regurgitant orifice area is related to aortic pressure and aortic root size, 16 fresh calf heart and aorta specim...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2010
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(10)61424-6