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Korean J Anesthesiol > Volume 20(1); 1987 > Article
Korean Journal of Anesthesiology 1987;20(1):70-78.
DOI: https://doi.org/10.4097/kjae.1987.20.1.70   
Difference between Arterial and End-tidal CO2 Tension and its Relationship with the Minute Volumes Per Body Weight during General Anesthesia .
Jeong Rye Lee, Young Seok Choi, Jung Soon Shin
Major in Anesthesiology, Department of Medical Science, Graduate School, Korea University, Seoul, Korea.
Abstract
The purpose of this study is to evaluate the relationship between arterial and end-tidal CO2 tension during general anesthesia. Sixty one patients age 21~40 years old without history of cardiopulmonary disease in American Society of Anesthesiologists physical status 1, were studied. Thoracic or upper abdominal operations were excluded in this study. Anesthesia was maintained by halothane, nitrous oxide and oxygen. Respirations were controlled in all patients with a Dameca ventilator and minute volumes were adjusted to provide FECO2 levels considered appropriate by anesthetist. The concentration of end-tidal carbon dioxide was continuously monitored with ENGS TROM ELIZA DUO CO2 and O2 analyzer. The radial artery was punctured 30 minutes after the surgical incision and 7oth arterial and endtidal carbon dioxide tension were measured simultaneously. The results were as follows : 1) The mean arterial to end-tidal CO2. tension difference was 2.5+/-3.9 torr. 2) There was a constant correlation between arterial and end-tidal CO2 tension regardless of the degree or minute volume. 3) There was no significant correlation 7etween smokers and non-smokers in male patients.
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