Souter M J, Andrews P J
Department of Clinical Neurosciences, Western General Hospital, Edinburgh.
Br J Anaesth. 1996 May;76(5):744-6. doi: 10.1093/bja/76.5.744.
Continuous jugular bulb venous oximetry has been validated previously for periods of up to 12 h after calibration. We assessed a new Edslab venous oximetry catheter in 15 patients with brain injury in the intensive care unit. After insertion into the jugular bulb, the catheter was calibrated using a laboratory co-oximeter. Subsequent comparisons were made at varying intervals (range 20 min to 100 h); 78 paired samples were obtained during periods of stable recordings. Estimation of haemoglobin saturation by the methods correlated well (r2 = 0.97, P < 0.0001). Mean difference (d) was small (0.28% (SD 2.35%)) and limits of agreement (d +/- (SD x 1.96)) were acceptable (-4.88% to 4.32%). There was no appreciable drift and there was negligible bias. This catheter did not suffer from problems of light intensity described with other systems, and it provided acceptable accuracy for clinical use for periods of up to and exceeding 24 h after calibration.
连续颈静脉球部血氧饱和度监测法此前已在校准后长达12小时的时间段内得到验证。我们在重症监护病房对15例脑损伤患者评估了一种新型的Edslab静脉血氧饱和度监测导管。将导管插入颈静脉球部后，使用实验室共血氧计进行校准。随后在不同间隔时间（范围为20分钟至100小时）进行比较；在稳定记录期间获得了78对样本。通过这些方法对血红蛋白饱和度的估计相关性良好（r2 = 0.97，P < 0.0001）。平均差异（d）较小（0.28%（标准差2.35%）），一致性界限（d +/-（标准差×1.96））是可接受的（-4.88%至4.32%）。没有明显的漂移，偏差可忽略不计。该导管不存在其他系统所描述的光强度问题，并且在校准后长达及超过24小时的时间段内为临床使用提供了可接受的准确性。
