Townshend Jennifer, Taylor Barry J, Galland Barbara, Williams Sheila
Department of Women's and Children's Health, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand.
J Paediatr Child Health. 2006 Jun;42(6):359-65. doi: 10.1111/j.1440-1754.2006.00873.x.
To compare the performance of pulse oximeters during movement and brachial artery occlusion.
Three machines (MasimoSET, using MasimoSET LNOP Pdt paediatric sensor, Mars 2001 using Novametrix paediatric sensor no. 6455 and Nellcor 595 using Nellcor 595 Oximax-P paediatric sensor and Nellcor 595 MAX-FAST adhesive forehead reflectance sensor) were used simultaneously on the left hand and forehead. The subjects were 18 healthy children aged 6-10 years. Interventions were 20 sequential 90 degrees body turns from mimicking normal movements while asleep followed by step increases in brachial artery occlusion. Mean heart rate (HR) from the four machines was compared with ECG HR. Haemoglobin O(2) saturation was compared with a baseline saturation and the proportion of epochs with false (low) saturation values.
The mean difference from ECG HR was not clinically significantly different for any machine but the limits of agreement were such that the Mars Model 2001 and Nellcor 595 (forehead) could have clinically important differences from ECG-derived HR (-20.04-15.00 and -14.95-14.04, respectively). Only the Nellcor 595 with finger probe had limits of agreement within the a priori set value of 4%. The prevalence of epochs with an haemoglobin O2 saturation of greater than 4% below baseline values was lowest for the Nellcor 595 finger probe (1.59%) and highest for the Nellcor forehead probe (20.45%). During brachial artery occlusion, all machines performed well up to within 20 mmHg of total occlusion.
Current motion-resistant pulse oximeters performed well but only the Nellcor 595 with finger probe achieved our a priori set standards.
比较脉搏血氧仪在运动和肱动脉闭塞期间的性能。
同时使用三台仪器（MasimoSET，使用MasimoSET LNOP Pdt儿科传感器；Mars 2001，使用诺华美第6455号儿科传感器；Nellcor 595，使用Nellcor 595 Oximax-P儿科传感器和Nellcor 595 MAX-FAST粘性前额反射传感器）分别置于左手和前额。研究对象为18名6至10岁的健康儿童。干预措施包括模拟睡眠时的正常运动进行20次连续90度的身体转动，随后逐步增加肱动脉闭塞程度。将这四台仪器测得的平均心率（HR）与心电图心率进行比较。将血红蛋白氧饱和度与基线饱和度进行比较，并计算出现错误（低）饱和度值的时段比例。
对于任何一台仪器，与心电图心率的平均差异在临床上均无显著差异，但一致性界限表明，Mars 2001型和Nellcor 595（前额）与心电图得出的心率可能存在具有临床意义的差异（分别为-20.04至15.00和-14.95至14. — 04）。只有使用手指探头的Nellcor 595的一致性界限在预先设定的4%值范围内。血红蛋白氧饱和度低于基线值超过4%的时段发生率，使用Nellcor 595手指探头时最低（1.59%），使用Nellcor前额探头时最高（20.45%）。在肱动脉闭塞期间，所有仪器在总闭塞压力达到20 mmHg之前表现良好。
当前的抗运动脉搏血氧仪表现良好，但只有使用手指探头的Nellcor 595达到了我们预先设定的标准。
