PDF(Pubmed)
Abstract：
Pulse oximeters are widely used in hospitals and homes for measurement of blood oxygen saturation level (SpO2) and heart rate (HR). Concern has been raised regarding a possible bias in obtaining pulse oximeter measurements from different fingertips and the potential effect of skin pigmentation (white, brown, and dark). In this study, we obtained 600 SpO2 measurements from 20 volunteers using three UK NHS-approved commercial pulse oximeters alongside our custom-developed sensor, and used the Munsell colour system (5YR and 7.5YR cards) to classify the participants\' skin pigmentation into three distinct categories (white, brown, and dark). The statistical analysis using ANOVA post hoc tests (Bonferroni correction), a Bland-Altman plot, and a correlation test were then carried out to determine if there was clinical significance in measuring the SpO2 from different fingertips and to highlight if skin pigmentation affects the accuracy of SpO2 measurement. The results indicate that although the three commercial pulse oximeters had different means and standard deviations, these differences had no clinical significance.
摘要：
脉搏血氧计在医院和家庭中广泛用于测量血氧饱和度(SpO2)和心率(HR)。人们对从不同指尖获得脉搏血氧计测量值的可能偏见以及皮肤色素沉着的潜在影响（白色，棕色,和黑暗）。在这项研究中,我们使用三个英国NHS批准的商业脉搏血氧计以及我们定制的传感器从20名志愿者那里获得了600个SpO2测量值，并使用Munsell颜色系统（5YR和7.5YR卡）将参与者的皮肤色素沉着分为三个不同的类别（白色，棕色,和黑暗）。使用方差分析事后检验(Bonferroni校正)进行统计分析，Bland-Altman的阴谋,然后进行相关性测试，以确定从不同指尖测量SpO2是否具有临床意义，并强调皮肤色素沉着是否会影响SpO2测量的准确性。结果表明，尽管三种商业脉搏血氧计具有不同的均值和标准偏差，这些差异没有临床意义.
