Comparison of Normal Gas Values in the CSF , Arterial and Venous Blood between Young and Old Age / 대한마취과학회지

ABSTRACT

Normal values of CSF gases in young Koreans were reported by Song and Jeon as follows PcsfO2 76.5+/-8.6 torr and PcsfCO2 44.9+/-3.6 torr. The pH of the CSF was 7.329 +/-0.017, HCO2 was 23.6+/-1.8mEq/L and the B.E. was -2.2+/-1.5. The CSF and arterial and venous blood gases of a group a relatively healthy patients aged 60~80 years scheduled for elective surgery were measured. Prior to the induction of anesthesia, lumbar tapping was performed at a level of L3-4 using a 22 gauge needle and CSF samples were obtained. Then, radial arteiral blood samples were taken. The subclavian vein was cannulated with a 20 gauge catheter and venous blood samples were collected. The gas values of this group were compared with those of the young age group as shown in the tables and figures. The results of this study were as follows PcsfO2 was 72.76+/-10.49 otrr and PcsfO2 was 44.52+/-3.5 torr. The pH of CSF was 7.318+/-0.04. HCO3- was 22.62+/-2.5 and B.E. was 3.07+/-2.4.