This is a type 1 Kay-Shiley non-tilting disc valve, the most common type of Kay-Shiley valve. It has four vertical struts form two parallel bars made of Stellite, and the disc is made of a radiolucent ...

Although the majority of implanted valves used in aortic valve surgery are tissue valves (bioprostheses), the mechanisms by which they interact with the host are not well understood. A new study by ...

Aortic valve stenosis is the most prevalent heart valve disease worldwide. Although interventional treatment options have rapidly improved in recent years, symptomatic aortic valve stenosis is still ...

A stepwise approach to perioperative cardiac assessment assists clinicians in determining when surgery should proceed or when a pause for further evaluation is warranted. 2. Cardiovascular screening ...

Valvular heart diseases (VHD) remain one of the leading causes of heart failure and a decrease in life expectancy. Timely diagnosis and management are of utmost importance for this subgroup of ...

Subclinical leaflet thrombosis (SLT) has raised concerns about the long-term durability and outcomes of transcatheter aortic valve replacement (TAVR). Clinical valve thrombosis (CVT) is a rare ...

This article elaborates on the startup challenges of a refinery heavy naphtha reforming unit, which started in an alternative direction than the original design intent. It includes the elaboration of ...