The object of the invention herewith illustrated is to provide for steam engine governors and steam pressure regulators a simple and reliable balance valve for controlling the flow of steam.

“In pure AR patients, there is no aortic annulus or leaflet calcification ... (AS), the narrowing of heart’s aortic valve. Coronary blood flow blockage is also a rare but lethal complication ...

resulting in rigidity of the mitral annulus may also lead to mitral regurgitation. Although rare, MR can be caused by penetrating trauma to the mitral valve. With retrograde systolic flow from the ...

The condition occurs when there is narrowing of the mitral valve that restricts blood flow in the heart's left chamber. In the patient this happened due to mitral annular calcification (MAC).

international head-to-head comparative trial of transfemoral transcatheter aortic valve replacement (TAVR). In patients with aortic stenosis and a small aortic annulus, results showed comparable ...