不同负压吸痰对早产儿血氧饱合度的影响

Impact of sputum suctioning under different pressures on SpO_2 of infant

目的：研究不同负压吸痰对早产儿血氧饱合度（SpO2）的影响。方法将60例早产儿随机分为第1、2、3组，每组20例，3组早产儿吸痰负压分别为5．33～7．87kPa、8．00～10．53kPa、10．67～13．20kPa。比较3组早产儿吸痰后气道黏膜损伤情况及SpO2的变化。结果不同负压吸痰对早产儿气道黏膜及SpO2均有影响。与第3组比较，第1组或第2组早产儿气道黏膜损伤情况减少（P＜0．01）；第2组较第1组、第3组SpO2更稳定（P＜0．01）；第1组痰液吸尽所需时间更长（P＜0．01），所需次数更多。结论早产儿吸痰负压宜选择8．00～10．53kPa，以保证较小的气道损伤和SpO2相对稳定。

Objective To investigate effects of sputum suctioning under different pressures on SpO2 of infant.Methods Infant were randomly divided into 3 groups and received sputum suctioning under such pressures as 5.33～7.87kPa （group 1）,8.00～10.53 kPa （group 2）,10.67～13.20 kPa （group 3）respectively.The airway injury and SpO2 were recorded.Results The airway injury and SpO2 of infant wereaffected by pressures used for sputum suctioning;and the airway injury was reduced in group 1 or 2 than group 3 （P 〈0.01）;SpO2 of infantwere affected by pressures used for sputum suctioning（P〈0.01）;group 1 required the longer time for each suctioning（P 〈0.01）and moresuctioning frequency.Conclusion Sputum suctioning performed on infant who suffered should be operated under the pressure of 8.00～10.53 kPa,which can result in relatively stable SpO2 .