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KMID : 0356919920250040664
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Korean Journal of Anesthesiology
1992 Volume.25 No. 4 p.664 ~ p.668
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End-tidal Carbon Dioxide Measurements in the Pediatric Patients: A Comparison of End-tidal PCO2 Sampled from the Proximal and Distal Ends of Pediatric Uncuffed Tracheal Tube
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이혜원
강포순/임혜자/채병국/장성호/신정순
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Abstract
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To determine the accuracy of end-tidal PCO2(PetCO2) measurement analysed with Ohmeda 5210 capnometer in te pediatric patients whose lung were ventilated with Ohio Infants Circle Absorber and Ohio Ventilator 7200, we compared PetCO2 measurements
sampled
from the proximal(PetCO2-p) and disatal(PetCO2-d) ends of the tracheal tube to arterial PCO2(PaCO2) in 22 healthy pediatric patients between 6.8 to 18.5kg.
@ES The results were as follows:
@EN 1) Proximal PetCO2 and distal PetCO2 correlated with PaCO2(r=0.76; SEE-2.79, r=0.70; SEE=301, respectively)(p<0.05).
2) Arterial to end-tidal PCO2 difference(delta(a-et)PCO2)was significantyly greater with distal(3.53(4.68 mmHg) than proximal(0.35(2.72 mmHg) sampling(p<0.05).
3) In subgroup of patients whose proximal to distal concentration of nitrous oxide difference was more than 2%, the delta(a-et) PCO2 using distal sampling(7.90(5.15 mmHg) was also significantly greater than it was using proximal
sampling(-1.73(2.39
mmHg)(p<0.05).
We conclude that distal estimates of PetCO2-P can not provide acceptable estimate of PaCO2 in healthy pediatric patients who are intubated with pediatric uncuffed tracheal tube.
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