Comparison of oxygen saturation measured by pulse oximetry and arterial blood gas analysis in neonates

  • Srie Yanda
  • Munar Lubis
  • Yoyoh Yusroh
Keywords: arterial oxygen saturation, pulse oximetry, arterial blood gas analysis, neonates

Abstract

Background Arterial blood gas is usually beneficial to discern the
nature of gas exchange disturbances, the effectiveness of com-
pensation, and is required for adequate management. Although
PaO 2 is the standard measurement of blood oxygenation, oxygen
saturation measured by pulse oximetry (SapO 2 ) is now a custom-
ary noninvasive assessment of blood oxygenation in newborn in-
fants.
Objective To compare oxygen saturation measured by pulse oxi-
metry (SapO 2 ) and arterial blood gas (SaO 2 ), its correlation with
other variables, and to predict arterial partial pressure of oxygen
(PaO 2 ) based on SapO 2 values.
Methods A cross sectional study was conducted on all neonates
admitted to Pediatric Intensive Care Unit (PICU) during February
2001 to May 2002. Neonates were excluded if they had impaired
peripheral perfusion and/or congenital heart defects. Paired t-test
was used to compare SapO 2 with SaO 2 . Correlation between two
quantitative data was performed using Pearson’s correlation. Re-
gression analysis was used to predict PaO 2 based on SapO 2 val-
ues.
Results Thirty neonates were included in this study. The differ-
ence between SaO 2 and SapO 2 was significant . There were sig-
nificant positive correlations between heart rate /pulse rate and
TCO 2 , HCO 3 ; respiratory rate and TCO 2 , HCO 3 , base excess (BE);
core temperature and HCO 3 , BE; surface temperature and pH,
TCO 2, HCO 3, BE; SapO 2 and pH, PaO 2 ; and significant negative
correlation between SapO 2 and PaCO 2 ; the correlations were weak.
The linear regression equation to predict PaO 2 based on SapO 2
values was PaO 2 = -79.828 + 1.912 SapO 2 .
Conclusion Pulse oximetry could not be used in place of arterial
blood gas analysis available for clinical purpose

Author Biographies

Srie Yanda
Department of Child Health, Medical School, University of
Sumatera Utara, Medan, Indonesia.
Munar Lubis
Department of Child Health, Medical School, University of
Sumatera Utara, Medan, Indonesia.
Yoyoh Yusroh
Department of Child Health, Medical School, University of
Sumatera Utara, Medan, Indonesia.

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Published
2016-10-10
How to Cite
1.
Yanda S, Lubis M, Yusroh Y. Comparison of oxygen saturation measured by pulse oximetry and arterial blood gas analysis in neonates. PI [Internet]. 10Oct.2016 [cited 23Dec.2024];43(6):211-. Available from: https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/696
Received 2016-09-24
Accepted 2016-09-24
Published 2016-10-10