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J Yeungnam Med Sci > Volume 24(2 Suppl); 2007 > Article
Yeungnam University Journal of Medicine 2007;24(2 Suppl):S519-526.
DOI: https://doi.org/10.12701/yujm.2007.24.2S.S519    Published online December 31, 2007.
Comparisons of Gas Analysis in Arterial, Venous and Warmed Venous Blood During Inhalation General Anesthesia
Heung Dae Kim
Department of Anesthesiology and Pain Medicine College of Medicine, Yeungnam University, Daegu, Korea
전신마취하에서 동맥혈, 정맥혈 및 가온정맥혈의 가스분석치 비교
김흥대
영남대학교 의과대학 마취통증의학교실
Correspondence:  Heung Dae Kim, Tel: (053) 620-3361, Fax: (053) 626-5275, 
Email: hdkim@med.yu.ac.kr
Abstract
Background:We determine whether venous blood, when sampled under carefully controlled conditions, was an acceptable alternative to arterial blood for the measurement of arterial blood gas analysis during inhalation general anesthesia. Materials and Methods:The arterial blood values of the carbon dioxide tension (PCO2), pH, base excess (BE), oxygen tension (PO2) and oxygen saturation (SO2) were compared with the values of venous blood drawn from the cephalic vein as non controlled routine method and as localized warmed method during inhalation general anesthesia with sevoflurane and N2O (50%) in 20 cases.
Results
:The blood gas analysis values of non controlled cephalic venous blood were close to those of arterial blood. They was similar between the PCO2 (42.5 ± 0.97 vs. 38.7 ± 0.92 mmHg), pH (7.35 ± 0.01 vs. 7.39 ± 0.01) and BE (-3.13 ± 0.62 vs. -0.18 ± 0.13 mEq/l) of non controlled cephalic venous and of arterial blood. Although the PO2 in non controlled cephalic venous blood was significantly less than that in arterial blood(130.8 ± 8.1 vs. 245.3 ± 6.8 mmHg), the difference in SO2 was small(98.9 ± 2.1 vs. 99.7 ± 0.4%). The blood gas values of warmed cephalic venous blood were more similar to those of arterial blood (PCO2, 41.2 ± 0.91 vs. 38.7 ± 0.92 mmHg; pH, 7.37 ± 0.01 vs. 7.39 ± 0.01; BE, -2.30 ± 0.62 vs. -0.18 ± 0.13 mEq/l; PO2, 157.3 ± 11.4 vs. 245.3 ± 6.8 mmHg; SO2, 99.2 ± 1.3 vs. 99.7 ± 0.4%) than to those of non controlled cephalic venous blood. Conclusion:We found that warmed cephalic venous blood during inhalation general anesthesia can be arterialized and PCO2, pH, BE and SO2 of warmed cephalic venous blood were not significantly different to those of arterial blood. Therefore we conclude that it is reliable to use localized warmed cephalic venous blood for the measurement of arterial blood gas analysis during inhalation general anesthesia.
Key Words: Blood gas analysis, Arterial blood, Cephalic venous blood, General anesthesia
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