Related Experiment Video
Updated: Aug 7, 2026
Protocol for Relative Hydrodynamic Assessment of Tri-leaflet Polymer Valves
Published on: October 17, 2013
Hydrodyamical assessment of valve prosthesis made of expanded ultra-microporous Teflon in vitro
Yong Liang1, Wu-Jun Wang, Kai-Can Cai
1Department of Cardiothoracic Surgery, Nanfang Hospital, First Military Medical University, Guangzhou 510515, China.
Objective:
To assess the hydrodynamical performance of the valve prosthesis made of expanded ultra-microporous Teflon in vitro.
Method:
Sheets of the expanded ultra-microporous Teflon were sewn onto flexible bracket to prepare artificial valve prosthesis. The leakage and steady flow of the valve prosthesis was tested in vitro with Baxter valve prosthesis as control.
Results:
The rate of leakage of this new valve prosthesis was similar to that of Baxter valve prosthesis (P>0.05), and the systolic pressure gradient of the former was much lower than control(P<0.05).
Conclusion:
This new artificial valve prosthesis has good in vitro hydrodynamical properties, which are superior to Baxter valve.
