正常麻醉犬动脉血和脑脊液酸碱及电解质值

２０条正常麻醉犬经股动脉插管和枕骨下经皮穿刺在严格隔绝空气情况下，分别取得动脉血和脑脊液（ＣＳＦ）样本，用ＩＬ－１３０３型血气分析仪和Ｂｅｃｋｍａｎ－７００型生化分析仪检测酸碱变量及电解质。通过酶反应分光光度法检测乳酸（Ｌａｃｔ）。应用（Ｎａ＋＋Ｋ＋）－（Ｃｌ－＋Ｌａｃｔ＋ＨＣＯ３－）公式计算阴离子隙（ＡＧ）。经统计学处理结果表明ＣＳＦＰＨ、Ｋ＋、ＡＧ＜动脉血（ｐ＜０．０１）；ＣＳＦＰＣＯ２、ＨＣＯ３－、Ｃｌ－、Ｌａｃｔ＞动脉血（ｐ＜０．０１）；ＣＳＦＮａ＋同动脉血比较无明显差异（ｐ＞０．０５）。

VALUES FOR ARTERIAL BLOOD AND CSF ACID-BASE VARIABLES AND ELECTROLYTES IN THE UNANESTHETIZED NORMAL DOGS

Arterial blood and cerebrospinal fluig (CSF) samples from 20 unanesthetized normal dogs were analyzed. Results is that: CSF pH, potassium, sodium, anion gap (AG)and strong ions difference (SID) in CSF were lower than those in the arterial blood; CSF PCO2 HCO3-, chloride, lactic acid (Lact) and osmolality (Osm) were higher than in the arterial blood, too. It is believed that the differences in acid-base variables and electrolytes were existed between CSF and arterial blood. The lower values of CSF pH were dependent up the higher valuesof CSF PCO2 and chloride concentration.