不同强度吸痰负压对低体重患儿心脏术后肺部感染吸痰效果的研究

Effect of different level of negative pressure of sputum aspiration on low-weight infants with pulmonary infection after cardiac surgery

目的:研究不同强度吸痰负压对10 kg以下先天性心脏病术后肺部感染患儿的护理效果。方法:抽取我中心手术治疗后出现肺部感染的10 kg以下婴幼儿,将其随机分为A,B,C组,每组20例,三组患儿给予不同负压吸痰护理,其中A组负压为10 kPa,B组负压为20 kPa,C组负压为30 kPa。比较三组患儿术后气道黏膜损伤情况,吸痰后肺部听诊情况,吸痰后动脉血氧分压及血氧饱和度的变化。结果:与C组比较,B组患儿气道黏膜损伤情况减少(P<0.05),与A组比较,B组患儿吸痰后呼吸音听诊改善明显(P<0.05),与A组和C组比较,B组患儿吸痰后动脉血氧饱和度、动脉血氧分压明显上升(P<0.05)。结论:心脏术后肺部感染的低体重患儿吸痰宜选择20 kPa的压力。

Objective：To study the effect of different level of negative pressure of sputum aspiration on low - weight infants with pulmonary infection after cardiac surgery. Methods：A total of 60 infants weighing below 10 kg,who were afflicted with pulmonary infection after cardiac surgery,were randomly into group A ,group B and group C. The negative pressure of sputum aspiration were 10 kPa,20 kPa,and 30 kPa for group A,group B and group C respectively. The airway injury,lung auscultation, and the changes of both arterial oxygen saturation （ SaO2 ） and arterial partial pressure of oxygen （ PO2 ） were recorded. Results：Compared with group C,group B had less airway injury. The improvement of lung auscultation in group B was more significant as compared with group A. Increases in SaO2 and PO2 were more in group B than those in group A and group C. Conclusion ：The suitable negative pressure of sputum aspira- tion for low - weight infants with pulmonary infection after cardiac surgery is 20 kPa.