Nijland R, Jongsma H W, van den Berg P P, Nijhuis J G, Oeseburg B
Department of Obstetrics and Gynaecology, University Hospital Nijmegen, The Netherlands.
J Clin Monit. 1995 Mar;11(2):118-22. doi: 10.1007/BF01617733.
The objective of our study was to describe the results from human experiments during normoxia that demonstrate the effect of pulsating arteries on the measured arterial oxygen saturation (SpO2) using a reflectance pulse oximeter sensor.
In 6 healthy adults and 7 healthy neonates, a Nellcor reflection sensor (FS-10 oxisensor, Nellcor, Inc., Pleasanton, CA) was placed in three different positions: (1) on the forehead, (2) on the temporal area, with the photodiode placed over the superficial temporal artery, and (3) on the temporal area, with the light-emitting diodes (LEDs) placed over the superficial temporal artery.
Placement of the sensor in position 2 resulted in a significantly lower SpO2 reading, compared to sensor position 1: 5.8% (p < 0.01) lower for adults and 7.5% (p < 0.01) lower for neonates. Placement of the sensor in position 3 resulted in significantly larger plethysmographic signals, compared to sensor position 1; but, the Spo2 readings were alike.
Pulsating arteries can affect the reliability of reflection pulse oximetry. Depending on the position of the sensor, a falsely low Spo2 value can be observed.
我们研究的目的是描述常氧下人体实验的结果，该实验使用反射式脉搏血氧饱和度传感器来证明搏动动脉对所测动脉血氧饱和度（SpO2）的影响。
在6名健康成年人和7名健康新生儿中，将Nellcor反射传感器（FS-10血氧传感器，Nellcor公司，加利福尼亚州普莱森顿）放置在三个不同位置：（1）前额；（2）颞部区域，光电二极管置于颞浅动脉上方；（3）颞部区域，发光二极管（LED）置于颞浅动脉上方。
与传感器位置1相比，将传感器置于位置2时SpO2读数显著降低：成年人降低5.888%（p<0.01），新生儿降低7.5%（p<0.01）。与传感器位置1相比，将传感器置于位置3时体积描记信号显著增大；但SpO2读数相似。
搏动动脉可影响反射式脉搏血氧饱和度测定的可靠性。根据传感器位置的不同，可能会观察到SpO2值假性降低。
