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Analysis of Influencing Factors on Pulse Oxygen Saturation Monitoring
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Objective To analyze influencing factors on pulse oxygen saturation(SpO2) monitoring for clinical practice reference.Methods The influencing factors of which SpO2 readings were different from arterial oxygen saturation(SaO2) values of 85 cases in central ICU from January 2007 to July 2009 were analyzed retrospectively.Results The abnormal site of SpO2 probe,movement artifact,low perfusion states,abnormity of SpO2 monitoring system,abnormal skin color and ambient light might all lead the inaccurateness of SpO2 measurements.The primary influencing factor was the abnormal site of SpO2 probe,which took a 29.41%(25/85) proportion.Conclusion SpO2 readings can better reflect the changes in SaO2,but many factors influence SpO2 readings.Appropriate intervention is needed to improve its accuracy.
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