侧卧位通气在体外循环术后低氧血症患儿中的应用

Appilication of lateral position ventilation in infant with extracorporeal circulation hypoxemia

目的探讨侧卧位通气治疗体外循环术后患儿低氧血症的疗效。方法对体外循环术后行机械通气的18例低氧血症患儿实施健侧卧位通气,分别于侧卧位通气前、实施侧卧位通气后1h、恢复仰卧位通气后1h做血气分析,观察各呼吸循环指标的变化。结果实施侧卧位通气1h后氧分压(PO_2)及PaO_2/FiO_2较仰卧位通气时升高(P<0.01),而各循环指标无明显变化(P>0.05);恢复仰卧位后1h时,氧分压(PO_2)及PaO_2/FiO_2虽较侧卧位通气时下降,但仍高于体位改变为侧卧位通气前(P<0.01)。结论侧卧位通气对治疗体外循环术后患儿低氧血症有明显疗效。

Objective To explore the effect of lateral position ventilation in infant with extracorporeal circulation hypoxia. Methods Lateral position ventilation was used in 18 infant patients with extracorporeal circulation hypoxia. Blood gas analysis was conducted before ventilation and 1 hour after lateral position ventilation and 1 hour after supine ventilation was resumed to observe the effect of different body position for ventilation on respiratory and circulatory parameters of patients. Results After 1 hour of lateral ventilation, their PO2 and PaO2/FiO2 was higher than those before ventilation（P 〈 0.01 ）,there was no significant differences in respiratory and circulatory parameters between the two positions （P 〉 0. 05） ;One hour after resumed supine ventilation, the PO2 and PaO2/FiOa were became lower but still higher than those before ventilation （P 〈 0. 01 ）. Conclusion Lateral ventilation is obvious effective for infant with extracorporeal circulation hypoxia.