Author/Editor		Pavčnik, Dušan; Machan, Lindsay; Uchida, Barry; Kaufman, John; Keller, Frederick S; Roesch, Josef
Title		Percutaneous prosthetic venous valves: current state and possible applications
Type		članek
Source		Techniques in vascular and interventional radiology
Vol. and No.		Letnik 6, št. 3
Publication year		2003
Volume		str. 137-142
Language		eng
Abstract		The small-intestinal submucosa square-stem bicuspid venous valve has shown the most promising results of all of the artificial venous valves developed. In long-term experimental studies in sheep, 25 valves were placed into the jugular veins and 88% exhibited good function, whereas 12% had decreased function because of valve tilting. Only 4% had partial thrombosis in the tilted valve. Valves also were placed in 3 patients. The bicuspid venous valves remained patent without thrombosis or other complications. Proper sizing and proper placement of the valves was critical to their function. The valve construction needs to be improved to prevent occasional tilting during their deployment.
Descriptors		VENOUS INSUFFICIENCY THROMBOPHLEBITIS FEMORAL VEIN BIOPROSTHESIS STENTS ADULT MIDDLE AGE BLOOD VESSEL PROSTHESIS JUGULAR VEINS POPLITEAL VEIN SHEEP