Ladegaard-Pedersen H J
Acta Anaesthesiol Scand Suppl. 1978;67:63-5.
In 30 patients blood samples were taken from both radial arteries and analysed for PCO2, PO2 and pH. The influence of sampling technique on the accuracy of blood-gas analysis was determined. The 95% confidence limits for PCO2 measurements were +/-0.32 kPa (2.4 mmHg), and for PO2 measurements were +/-1.16 kPa (8.8 mmHg) in the range below 20 kPa, and +/-2.94 kPa (22.0 mmHg) above 20 kPa. For pH, the 95% confidence limits were +/-0.014. Only the PO2 measurements were significantly influenced by the sampling procedure.
对30名患者的双侧桡动脉采集血样，并分析其中的二氧化碳分压（PCO2）、氧分压（PO2）和酸碱度（pH）。测定了采样技术对血气分析准确性的影响。PCO2测量值的95%置信区间为±0.32千帕（2.4毫米汞柱），PO2测量值在20千帕以下时为±1.16千帕（8.8毫米汞柱），在20千帕以上时为±2.94千帕（22.0毫米汞柱）。对于pH值，95%置信区间为±0.014。只有PO2测量值受到采样程序的显著影响。
