In patients with previously impaired left-cardiac function, both mechanisms have the potential for increasing centralbloodvolume and eventually lung filtration pressure.
对曾有左心功能损害的病人，两种机制都可能增加中心血容量并且最终增加肺滤过压。
2
Several studies suggest that intrathoracic bloodvolume index might be superior to central venous pressure with regard to preload assessment.
多项研究认为在评估前负荷上胸腔内血容量指数要优于中心静脉压。
3
Therefore, intrathoracic bloodvolume index appears to be more appropriate for volume management in necrotizing pancreatitis than central venous pressure or hematocrit.