Finsterer U, Lühr H G, Götz E
Anaesthesist. 1976 Dec;25(12):563-71.
In two groups of 30 patients each who had undergone abdominal surgery under NLA (mean anaesthesia time 4h) we found a small but significant reduction in the serum potassium level after 45 min of anaesthesia. Throughout anaesthesia we found a significant reduction of potassium content of red cells, serum sodium and base excess. Potassium balance shows that under anaesthesia and operation potassium moves out of the extracellular space and the red cells into other compartments. At the same time about 75 per cent of infused sodium and water is retained with a positive correlation between the quantities of sodium infused and retained. A modification of the infusion regimen by substituting glucose solution with distilled water and Ringer lactate with normal saline and 5 mval/l KCI only results in a change in blood glucose and serum sodium.
在两组各30例接受非住院麻醉下腹部手术的患者中（平均麻醉时间4小时），我们发现在麻醉45分钟后血清钾水平有轻微但显著的降低。在整个麻醉过程中，我们发现红细胞钾含量、血清钠和碱剩余均有显著降低。钾平衡显示，在麻醉和手术期间，钾从细胞外间隙和红细胞移出进入其他腔室。同时，约75%输入的钠和水被保留，输入的钠量与保留量之间呈正相关。通过用蒸馏水替代葡萄糖溶液、用生理盐水和5毫当量/升氯化钾替代乳酸林格液来改变输注方案，只会导致血糖和血清钠的变化。
