Comparison of Arterial Carbon Dioxide Tension and End-tidal Carbon Dioxide Tension in Infants and Children .
10.4097/kjae.1991.24.3.490
- Author:
Tae In LEE
1
;
Chee Mahn SHIN
;
Ju Yuel PARK
Author Information
1. Department of Anesthesiology, College of Medicine, Inje University, Pusan, Korea.
- Publication Type:Original Article
- Keywords:
End-tidal carbon dioxide tension;
Arterial carbon dioxide tension
- MeSH:
Adult;
Carbon Dioxide*;
Carbon*;
Catheters;
Child*;
Humans;
Infant*;
Infant, Newborn;
Respiration
- From:Korean Journal of Anesthesiology
1991;24(3):490-495
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
End-tidal PCO2 measurements are less accurate in neonates, infants, and small children than in adults. These in accuracies may by attributed in part to the dilution of end-tidal gas with fresh gas as a result of placing the sampling catheter between the endotracheal tube and a partial rebreathing circuit. To determine the most accurate catheter position for measurements of end-tidal gas tensions, end-tidal PCO2 was measured continuously from the distal and proximal end of the endotracheal tube and these data were compared with simultaneous arterial PCO2 The results were as follows: 1) In children weigthing above 15 kg ventilated with partial rebreathing circuit, both distal and proximal end-tidal PCO2 values approximated arterial PCO2 (p<0.05). 2) In infants and children weigthing below 15 kg ventilated with Ayre's T-piece breathing circuit(Jackson-Rees modification), only distal end-tidal PCO2 approximated arterial PCO2.
