Clayton D G, Webb R K, Ralston A C, Duthie D, Runciman W B
University of Adelaide, Australian Patient Safety Foundation.
Anaesthesia. 1991 Jan;46(1):3-10. doi: 10.1111/j.1365-2044.1991.tb09303.x.
The performance of 20 pulse oximeters with finger probes was evaluated by comparison of their readings with directly measured arterial blood oxygen saturations. The samples were taken from patients who had undergone cardiac surgery under hypothermic cardiopulmonary bypass and had poor peripheral perfusion. The mean difference (bias, accuracy), standard deviation (precision) and drop-out rate for each pulse oximeter was determined. An overall ranking of performance of each pulse oximeter was calculated using five criteria (accuracy, precision, number of readings within 3% of standard, percentage of readings given within 3% of standard, expected overread limit in 95% of cases). Two pulse oximeters achieved a combination of accuracy and precision such that 95% of measurements would be expected to be within 4% of the co-oximeter value; these two also had the lowest drop-out rate.
通过将20台带有手指探头的脉搏血氧仪的读数与直接测量的动脉血氧饱和度进行比较，对其性能进行了评估。样本取自接受低温体外循环心脏手术且外周灌注不良的患者。确定了每台脉搏血氧仪的平均差异（偏差、准确性）、标准差（精密度）和退出率。使用五个标准（准确性、精密度、在标准值的3%范围内的读数数量、在标准值的3%范围内给出的读数百分比、95%情况下的预期高估极限）计算了每台脉搏血氧仪的总体性能排名。两台脉搏血氧仪实现了准确性和精密度的组合，使得95%的测量值预计在与血氧计值相差4%的范围内；这两台的退出率也最低。
