Low-gradient AS is generally seen in patients with low EF; however, a significant percentage of patients with severe AS may present with low-gradient despite preserved LVEF ("paradoxical" low-flow and low-gradient stenosis). In patients with low-gradient AS, clarification of disease severity and...
Low-flow, low-gradient (LF-LG) aortic stenosis (AS) may occur with depressed or preserved left ventricular ejection fraction (LVEF), and both situations are among the most challenging encountered in patients with valvular heart disease. In both cases, the decrease in gradient relative to AS ...
Low-flow, low-gradient severe aortic stenosis despite normal ejection fraction is associated with severe left ventricular dysfunction as assessed by speckle-tracking echocardiography: a multicenter study.主要由Adda, Jérôme、Mielot, Christopher、Giorg
For more information visit www.intechopen.com Chapter Low Flow Low Gradient Severe Aortic Stenosis: Diagnosis and Treatment Faeez Mohamad Ali, Vindhya Wilson and Rajesh Nair Abstract Approximately 40% of patients with aortic stenosis (AS) show discordant Doppler-echocardiographic parameters with ...
Background Patients with low-flow, low-gradient (LFLG) aortic stenosis (AS) have precarious hemodynamics and are a fragile population for intervention. Quantification of aortic valve calcification (AVC) severity is a critical component of the evaluation for transcatheter aortic valve replacement (TAVR...
Classical and Paradoxical Low-Flow, Low-Gradient Aortic Stenosis: The Evolving Role of TAVR - ScienceDirect INTRODUCTION. The evaluation of real severity of "low-flow low-gradient" aortic stenosis (LFLG AS) is particularly challenging. TOPAS study demonstrated th... AB Freitas-Ferraz,MD Josep Ro...
Abstract Importance In low-flow, low-gradient aortic stenosis (LFLG AS), the severity of left ventricular dysfunction remains a key factor in the evaluation of aortic valve replacement. Objective To evaluate the clinical outcomes and changes in left ventricular ejection fraction (LVEF) after transcat...
The diagnostic role of "acceleration time" measurement in patients with classical low flow low gradient aortic stenosis with reduced left ventricular eject... In our study, we aimed to assess the role of acceleration time (AT), ejection time (ET), and AT/ET ratio to distinguish between true...
Clinical outcome of patients with paradoxical low-flow, low-gradient aortic stenosis after transcatheter aortic valve implantationJ., SchewelD., SchewelC., FrerkerT., ThielsenF., MeinkeF., KreidelK.H., KuckU., SchaferSchewel J, Schewel D, Frerker C, Thielsen T, Meink...
AVA = aortic valve area; BSA = body surface area; MPG = transvalvular mean pressure gradient; HG-AS = high-gradient aortic stenosis; LFLG-AS = low-flow, low-gradient aortic stenosis; LVEF = left ventricular ejection fraction; pLFLG-AS = paradoxical low-flow, low-gradient aortic stenosis;...