Semilunar Valve Replacement with a Cylindrical Valve

Abstract

A cylindrical valve was designed to prevent regurgitation of the semilunar valve. The valve is made of a sheet of polytetrafluoroethylene (PTFE) or porcine pericardium, and has three cusps and three commissures. The diameter of the valve is equal to the height of the cusps. We have used these valves in pulmonary stenosis after Jatene's operation and total correction of tetralogy of Fallot, and for truncal valve regurgitation. Regurgitation was trivial on color Doppler echocardiography in all cases. Advantages in comparison with the implantation of commercially available artificial valves include the ability to insert a larger size and no compression of the valve ring when closing the sternum. Outflow tract obstruction does not occur even when the valve is implanted in a small infant. In the present report, we describe this simple technique.

Early and 1-year outcome and predictors of adverse outcome following monocusp pulmonary valve reconstruction for patients with tetralogy of Fallot: A prospective observational study

“…The monocusp RVOT patch can be created with autologous or bovine pericardium,[8] allograft pulmonary valve cusp,[9] or with PTFE membrane. [21011]…”

“…Yamagishi and Kurosawa[10] and Oku and colleagues[11] introduced 0.1-mm PTFE for monocusp valve construction in 1993. Animal studies suggested that 0.1-mm PTFE functioned better than fresh or glutaraldehyde-treated pericardium for monocuspid valve construction.…”

Pulmonary root translocation in malposition of great arteries repair allows right ventricular outflow tract growth

“…The bovine pericardial patch may cause inflammation and fibrosis in the native valve, impeding its growth. Valve patches made of a different material, such as polytetrafluoroethylene, [10][11][12] or use of a homologous decellularized pulmonary valve cusp 13 may further improve long-term valve performance. The observed hospital mortality, 6.8%, is acceptable.…”

Right ventricular outflow tract reconstruction with a polytetrafluoroethylene monocusp valve: A twelve-year experience

“…The monocusp RVOT patch can be created with autologous or bovine pericardium, 4,5 allograft pulmonary valve cusp, 6 or the (off label) use of a polytetrafluoroethylene (PTFE) membrane (0.1-mm PTFE patch; W. L. Gore & Associates, Inc, Flagstaff, Ariz) traditionally used for pericardial closure. [7][8][9] All types of monocusps have shown, particularly in the immediate postoperative period, to significantly reduce or prevent pulmonary insufficiency (PI). 10 The elimination of PI is associated with faster recovery of RV function, a lower central venous pressure, and less postoperative chest tube drainage.…”