摘要
目的 了解脉搏氧饱和度测定法在监测儿科危重病例时的准确性和可靠性。方法 在抽取动脉血作血气分析的同时 ,读取两种脉搏氧饱和度仪显示的SpO2 值。采用配对计量资料比较的t检验、直线相关分析和四格表资料的 χ2 检验比较脉膊氧饱和度和血氧饱和度。结果 在各种病理状态和各个年龄组 ,当PaO2 在 45～ 10 0mmHg范围内 ,两种仪器测定的SpO2 与SaO2 之间的差异均无显著性意义 (P值均 >0 .0 5 ) ,且SpO2 与SaO2 呈非常显著正相关 (P值均 <0 .0 1) ,并能较准确地预测PaO2 。但当PaO2 <45mmHg或 >10 0mmHg时 ,SpO2 不能准确预测PaO2 。结论 在一定范围内 ,脉搏氧饱和度仪能准确测定危重患儿机体氧合状态。但在临床应用时 ,必须结合病情观察及血气分析 。
Objective To study the accuracy and reliability of pulse oximeter in monitoring critical children.Method SpO 2 values showed on two kinds of pulse oximeter were recorded when withdrawing arterial blood to make blood gas analysis.Linear correlation analysis,paired students t test and chi square test were used to compare SpO 2 with SaO 2.Results In each pathologic status and each age stages,when PaO 2 in the range of 45～100mmHg.There was no significant difference between SaO 2 and SpO 2 measured by two kinds of pulse oximeters(all P >0.05).There was significant positive correlation between SaO 2 and SpO 2 measured by two kinds of pulse oximeters (all P <0.01),and SpO 2 could predict PaO 2 more accurately.Conclusions Pulse oximeter can accurately determine the oxygenation of critical children in some degree.In practical application,in order to assess patients cardiopulmonary function accurately,it is necessary to combine pulse oximetry with clinical observation and blood gas analysis.
出处
《现代诊断与治疗》
CAS
2000年第4期204-206,共3页
Modern Diagnosis and Treatment
