Coghe J, Uystepruyst C, Bureau F, Lekeux P
Department of Large Animal Clinical Sciences, Faculty of Veterinary Medicine, University of Liege, Bât B42, Sart Tilman, B-4000 Leige, Belgium.
Vet Rec. 1999 Dec 4;145(23):666-9.
The aim of this study was to evaluate the practicality and accuracy of different attachment sites for the optodes of a pulse oximeter (measuring arterial haemoglobin oxygen saturation) in healthy cattle, and to assess the accuracy of pulse oximetry in diseased cattle with low haemoglobin oxygen saturation values caused by respiratory disease. The tail, the nasal septum and the genital mucosa of females provided a continuous, stable and intense signal. The smallest bias, and no significant difference between measurements of arterial haemoglobin (mSpO2) with the pulse oximeter and measurements of arterial haemoglobin oxygen saturation (SaO2) with a blood gas analyser was obtained when the probe was attached to the tail. This site was used to evaluate the accuracy of pulse oximetry in animals with respiratory disease. There was a small bias between the measurements of SaO2 and mSpO2, with a tendency for pulse oximetry to underestimate higher values and to overestimate lower values. The precision of pulse oximetry decreased substantially with the values for SaO2 < 80 per cent, which lies outside the clinically relevant range.
本研究的目的是评估在健康牛中脉搏血氧仪（测量动脉血红蛋白氧饱和度）不同光极附着部位的实用性和准确性，并评估脉搏血氧测定法在因呼吸系统疾病导致血红蛋白氧饱和度值较低的患病牛中的准确性。雌性牛的尾巴、鼻中隔和生殖黏膜能提供持续、稳定且强烈的信号。当探头附着在尾巴上时，脉搏血氧仪测量的动脉血红蛋白（mSpO2）与血气分析仪测量的动脉血红蛋白氧饱和度（SaO2）之间的偏差最小，且无显著差异。该部位用于评估患有呼吸系统疾病动物的脉搏血氧测定法的准确性。SaO2和mSpO2的测量之间存在较小偏差，脉搏血氧测定法有低估较高值和高估较低值的趋势。当SaO2值<80%时，脉搏血氧测定法的精密度大幅下降，而该值超出了临床相关范围。
