Elastin-Dependent Aortic Heart Valve Leaflet Curvature Changes During Cyclic Flexure

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Aortic Valve Leaflet Motion during Systole

An approximate numerical^graphical solution was made for the motion of a human aortic valve leaflet in a meridional plane through the center of the sinus of Vabalva. The observed buckling, whipping action of the leaflet was obtained. Of primary significance in the results was the location and the determination of the maximum curvature of the leaflet in this plane, since this point corresponds t...

متن کامل

Interlayer micromechanics of the aortic heart valve leaflet.

While the mechanical behaviors of the fibrosa and ventricularis layers of the aortic valve (AV) leaflet are understood, little information exists on their mechanical interactions mediated by the GAG-rich central spongiosa layer. Parametric simulations of the interlayer interactions of the AV leaflets in flexure utilized a tri-layered finite element (FE) model of circumferentially oriented tissu...

متن کامل

Time-dependent biaxial mechanical behavior of the aortic heart valve leaflet.

Despite continued progress in the treatment of aortic valve (AV) disease, current treatments continue to be challenged to consistently restore AV function for extended durations. Improved approaches for AV repair and replacement rests upon our ability to more fully comprehend and simulate AV function. While the elastic behavior the AV leaflet (AVL) has been previously investigated, time-depende...

متن کامل

Polytetrafluoroethylene leaflet extensions for aortic valve repair.

(Leipzig, Germany): I commend you for your courage in using a new product designed for a completely different purpose, but which works well. My first question is, what are your indication criteria because you have patients with a moderate stenosis and moderate insufficiency, a mean of 1.8 and a mean gradient of 54? Dr Nosál': Typically our patients have a mixed aortic valve pathology, so the me...

متن کامل

Echo diagnosis of ruptured aortic valve leaflet.

artery, and it has been suggested that these patients should be treated by bypass surgery. The mechanism for sudden death is not known. Theories include kinking of the anomalous artery2 and occlusion by a flap-like closure of the ostium as the aorta expands.3 However, sudden death, infarction, and ischemia may occur without regard to the course of the anomalous left coronary artery.4 In the pas...

متن کامل

ذخیره 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: Bioengineering

سال: 2019

ISSN: 2306-5354

DOI: 10.3390/bioengineering6020039