Tissue heart valve replacements, also known as biological or bioprosthetic valves, are harvested from pigs (porcine heart valves) or constructed from the tissue sac (the pericardium) surrounding the heart of a cow (bovine).

Transcatheter aortic valve replacement (TAVR) is a type of heart valve surgery. It's done to replace a narrowed aortic valve, a condition called aortic valve stenosis. A doctor inserts a flexible tube called a catheter into a blood vessel and guides it into the heart.

2019年6月21日 · Learn about cow valve replacement surgery including bovine valve replacements use during open heart surgery.

Valve replacement surgery is most often used to treat people with aortic valve disease, particularly aortic stenosis (narrowing). Other conditions that may require a heart valve replacement include: Mitral , pulmonary or tricuspid valve stenosis (narrowing).

2024年6月11日 · Aortic valve replacement may be done using open-heart surgery or minimally invasive methods. Transcatheter aortic valve replacement (TAVR) is a type of minimally invasive aortic valve replacement. It also is called transcatheter aortic valve implantation (TAVI).

2020年9月17日 · Biological heart valve replacements are made from animal tissue (pigs, cows or horses) or human tissue. The biological valves made from animal tissue are called xenografts while heart valves taken from a human -- who has donated his/her heart -- is called an allograft or, more commonly, a homograft.

2019年2月11日 · This series demonstrates that children and young adults who have undergone AVR with bovine pericardial tissue valves, regardless of manufacturer, require heightened echocardiographic monitoring (at least every 6 months) because of the potential rapid development of bioprosthetic aortic stenosis.

2024年10月7日 · A cow tissue replacement is known as a bovine valve and a pig tissue replacement is called a porcine valve. While they both come from animals, they are made in different ways. With a porcine valve, an entire aortic valve is …

2023年12月29日 · The risk of endocarditis was higher in patients who received a bovine compared with a porcine valve prosthesis after surgical aortic valve replacement. This association should be considered in patients undergoing both surgical and …

Cohort studies that compared survival between patients who underwent aortic valve replacement and received either a bovine or a porcine bioprosthesis and that reported overall long-term survival with hazard ratio (HR) and 95% confidence interval (CI) were included.