The aortic valve area can be calculated and measured ... 60 mm Hg and a valve area of about 0.6 cm2 calculated by the continuity equation formula. Planimetry revealed a much larger valve area ...

All compounds are either investigational or being studied for (a) new use(s). Efficacy and safety have not been established. There is no guarantee that they will become commercially available for the ...

Calcific aortic valve disease is the pathological remodeling of valve leaflets. The initial steps in valve leaflet osteogenic reprogramming are not fully understood. As TERT (telomerase reverse ...

Aim This study aimed to systematically review and analyse the existing evidence on outcomes of emergency transcatheter aortic valve implantation (eTAVI) and emergency balloon aortic valvuloplasty ...

The four heart valves (tricuspid, pulmonary, mitral and aortic) open and close at just the right moment to keep the blood moving in the proper direction through the heart. It is helpful to visualize ...

Bicuspid aortic valve disease, where the aortic valve has two leaflets instead of the normal three, is the most common congenital heart defect, affecting up to 2% of the population.

Primed to view any unusual behaviour by Valve as evidence of Half-Life 3's development, fans have naturally speculated that this hidden game is Gordon Freeman's long-awaited third adventure. But ...

By calculating the combination of forces using a force balance equation, an engineer can determine if the valve will behave as intended. The design should include a margin of safety above the ...

Description Aortic stenosis occurs when the aortic valve, which separates the main pumping chamber of the heart from the circulation, becomes narrowed. This may reduce the flow of blood out of the ...

While bicuspid aortic valves are known to be associated with aortic dilation and dissection, the risk of dissection in this population has recently been called into question. Michelena and ...