All issues > Volume 37(9); 1994

Original Article

J Korean Pediatr Soc. 1994;37(9):1205-1212. Published online September 15, 1994.

The Accuracy of Pulse Oximeter in Pedicting the Arterial Oxygen Saturation

Jeong Hye JH Lee¹, Mi Sook MS Kim¹, Seong Sook SS Jeon¹, Son Sang SS Suh¹

¹Department of Pediatrics, Ilsin Christain Hospital, Pusan, Korea

Abstract

We studied 21 neonates who required mechanical venilation during study period in NICU OF Il Sin Christian Hospital with diagosis of prematurity, IRDS, pneumothorax and diaphragmatic hernia to evaluate the accuracy of pulse oximeter in predicting the arterial oxygen saturation, hypoxia and hyperoxemia. We also studied wheter the changes of birth weight, hematocrit, blood pressure and body temperature affect the accuracy of pulse oximeter. The results are 1)Linear regression analysis revealed a close correlation between in vivo pulse oximeter readings and in vitro SaO2 measurements in patients (Y=0.008X+12.34, r=0.946) 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 SaO2-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%)

Keywords :Pulse oximeter