高频喷射通气时影响PaCO2因素的多因素分析

Correlation analysis of factors influencing P a CO 2 during high frequency jet ventilation

通过对高频喷射通气时驱动压、吸呼时间比、针距等参数与ＰａＣＯ２之间关系的多元回归分析，发现驱动压（ｒ＝－０．７２４９，Ｐ＜０．０５），分通气量（ｒ＝－０．４０４９，Ｐ＜０．０５）与ＰａＣＯ２呈负相关，体重与分通气量呈正相关（ｒ＝０．８０４２，Ｐ＜０．０１）．所得的回归方程回归效果良好。

The relationship of P a CO 2 to driving pressure, inspiratory and expiratory time ratio and needle distance was studied by means of stepwise regression analysis. The authors found a negative correlation between P a CO 2 and driving pressure ( r =-0.7249, P <0.05), between P a CO 2 and minute ventilation ( r =-0.4049, P <0.05), and a positive correlation between body weight and minute ventilation ( r =0.8042, P <0.01). The regression fomula can be made for reference target of clinical adjusting parameters.