Walker D K, Scotten L N
Vivitro Systems Inc., Cardiac Development Laboratory, Royal Jubilee Hospital, Victoria, British Columbia, Canada.
J Heart Valve Dis. 1994 Sep;3(5):561-70.
The in vitro function of the CarboMedics, Medtronic Hall, Omniscience, Starr-Edwards, St. Jude and Sorin (formerly Shiley) Monostrut heart valves have been compared using a pulsatile flow model left heart and load system. A wide range of flows and heart rates were used. The above valves in all sizes and in both aortic and mitral positions were tested. Results for transvalvular pressure, regurgitation and effective orifice area are presented. The small size St. Jude valves showed the least transvalvular pressure and largest effective orifice area. For large valves, the least regurgitation was exhibited by the Starr-Edwards valve. The data provides a reference for the range of normal performance that can be expected of mechanical prosthetic heart valves.
已使用脉动流模型左心和负荷系统对CarboMedics、美敦力Hall、Omniscience、Starr-Edwards、圣犹达和索林（原希利）单支柱心脏瓣膜的体外功能进行了比较。使用了广泛的流量和心率范围。对上述所有尺寸以及主动脉和二尖瓣位置的瓣膜进行了测试。给出了跨瓣膜压力、反流和有效瓣口面积的结果。小号圣犹达瓣膜显示出最低的跨瓣膜压力和最大的有效瓣口面积。对于大号瓣膜，Starr-Edwards瓣膜的反流最少。这些数据为机械人工心脏瓣膜预期的正常性能范围提供了参考。
