Faulkner J E, Hauptman J G
Department of Small Animal Clinical Sciences, Michigan State University, East Lansing 48824-1314.
Am J Vet Res. 1989 Sep;50(9):1516-9.
The relationship between the palpebral conjunctival oxygen (PcjO2) index, mixed venous oxygen tension (PvO2), and cardiac index were compared, using a canine hemorrhagic shock model. The cardiac output was reduced by reducing the blood volume in 5% increments until the initial cardiac output was reduced by one half. In each of 7 dogs, the PcjO2 index and PvO2 were found to have good correlation with cardiac index; however, the correlation coefficients were markedly reduced when the data from all of the dogs were combined. It was concluded that PcjO2 index provides an excellent means of assessing changes in cardiac index over time in the same dog; however, it cannot be used to estimate cardiac index in an individual dog with a degree of accuracy that would be clinically significant.
使用犬失血性休克模型，比较了睑结膜氧（PcjO2）指数、混合静脉血氧分压（PvO2）与心脏指数之间的关系。通过以5%的增量减少血容量来降低心输出量，直至初始心输出量降低一半。在7只犬中的每一只中，发现PcjO2指数和PvO2与心脏指数具有良好的相关性；然而，当将所有犬的数据合并时，相关系数显著降低。得出的结论是，PcjO2指数为评估同一只犬随时间变化的心脏指数提供了一种极好的方法；然而，它不能以具有临床意义的准确度用于估计个体犬的心脏指数。
