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KMID : 0375219920070010157
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Journal of Il Sin Christian Hospital
1992 Volume.7 No. 1 p.157 ~ p.166
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The Accuracy of Pulse Oximeter in Predicting the Arterial Oxygen Saturation
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Abstract
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We studied 21 neonates who required mechanical ventilation during study period in NICU of Il Sin Christian Hospital with diagnosis including of prematurity, IRDS, pneumothorax and diaphragmatic hemia to evaluate the accuracy of pulse oximeter in
predicting the arterial oxygen saturation, hypoxia and hyperoxemia.
We also studied whether the changes of birth weight, hematocrit, blood pressure and body temperature affect on the accuracy of pulse oximeter.
@ES The results are
@EN 1) Linear regression analysis revealed a close correlation between in vivo pulse oximeeter readings and in vitro SaO2 measurements in patients(Y=0.888X+12.34, r=0.964).
2) The changes of birth weight, hematocrit, blood pressure and body temperature did not affect the accuracy of pulse oximeter.
3) SpO2-PaO2 relationship was similar to the SoO2-PaO2 relationship.
4) When Nellcor N-100 pulse oximeter was setted at alarm limit 96% to avoid hyperoxemia, it identified 16 of 22 hyperoxemic instances(sensitivity 73%) and alarmed falsely in 48 of 92 nonhyperoxemic instances(Specificity 59%).
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KEYWORD
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