Efficiency of centrifugal pump in closed extracorporeal circulation model: an in vitro study
Yan Shu-jie
Li Yong-nan
Liu Gang
Teng Yuan
Liu Ming-yue
Li Jing-wen
Ji Bing-yang
Lou Song
Abstract：Objective To investigate factors influencing centrifugal pump efficiency in closed extracorporeal circulation model and to compare pump efficiency between MAQUET ROTAFLOW and SORIN Revolution 5. Methods Centrifugal pump speed, pump flow, flow/speed ratio, inlet and outlet pressure were recorded under different afterload and preload conditions with an in vitro saline closed extracorporeal circulation system model. The correlation curves between these variables were plotted. Results Centrifugal flow had a significant positive linear correlation with pump speed. Compared with Revolution 5, ROTAFLOW had a lower pump flow/speed ratio. Centrifugal pump flow and flow/speed ratio were inversely correlated with both inlet negative pressure and outlet pressure at any fixed pump speed. Conclusion Centrifugal pump efficiency is determined by pump design, pump speed, inlet and outlet pressure. Revolution 5 has better efficiency than ROTAFLOW.
Keywords：Closed extracorporeal circulation systemExtracorporeal membrane oxygenationCentrifugal blood pumpIn vitro study
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 236-240 )