aortic valve


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aortic valve

[ā′ȯrd·ik ′valv]
(anatomy)
A heart valve comprising three flaps which guards the passage from the left ventricle to the aorta and prevents the backward flow of blood.
References in periodicals archive ?
In a clinical study to evaluate safety and effectiveness, 503 patients with severe aortic stenosis at low risk for surgical complications were randomly selected to have aortic valve replacement with the Sapien 3 transcatheter heart valve, and 497 were randomly selected to have aortic valve replacement with traditional open-heart surgery using an approved surgical tissue valve.
Based on suture type, the aortic valve market for sutureless valves is projected to witness significant growth during the forecast period, with 22.9% CAGR in terms of value.
It is a less invasive aortic valve replacement technique, wherein a damaged aortic valve-- -- the heart valve controlling the outflow of blood from the main pumping chamber of the heart into the aorta narrows severely, causing significant outflow limitation.
The company added that the LOTUS Edge valve system is the only US FDA-approved aortic valve that gives physicians the option to reposition and completely recapture the valve once it has been fully deployed.
Surgical aortic valve replacements have been performed for decades, and in multiple previous studies in intermediate-risk TAVR patients, data demonstrated that complication rates are equivalent or better for TAVR than for intermediate-risk surgical aortic valve replacement patients.
Table-II: Clinical (levels of NT-proBNP and uric acid) and demographic parameters in aortic valve disease groups and controls.
Aortic valve replacement can be done in a surgical procedure (surgical aortic valve replacement, or SAVR) or a catheter-based procedure (transcatheter aortic valve replacement, orTAVR).
She was sent for trans-thoracic echocardiography which showed the thickened bicuspid aortic valve with restricted movements.
Many experts believe that TAVR will become the first-line valve replacement treatment for almost everyone with aortic valve disease.
The second TBAV was performed for the residual gradient on the aortic valve level.
Intraoperative transesophageal echocardiography showed a heavily calcified trileaflet aortic valve with a peak velocity of 4.2 m/s, mean gradient of 62 mm Hg, and preserved left ventricular systolic function.
"These results provide contemporary data on long-term clinical outcomes and SVD post-SAVR, and they should be taken into consideration when evaluating late clinical outcomes and valve durability after transcatheter aortic valve replacement," the authors write.