耳部血氧测定法：评估动脉氧合的准确性和实用性。

Ear oximetry: accuracy and practicability in the assessment of arterial oxygenation.

作者信息

Saunders N A, Powles A C, Rebuck A S

出版信息

Am Rev Respir Dis. 1976 Jun;113(6):745-9. doi: 10.1164/arrd.1976.113.6.745.

DOI:10.1164/arrd.1976.113.6.745

Abstract

The accuracy of three ear oximeters (Waters XP-350, Waters 0-1100, Hewlett-Packard 47201A) was evaluated on 52 subjects during acute progressive and steady-state hypoxia. Ear oximeter readings were compared with measured arterial saturation (SAO2) in arterial or "arterialized" capillary blood samples. Hewlett-Packard (HP) 47201A ear oximeter readings most closely approximated measured Sao2 (y=0.99x - 1.52, r=0.97), although both the HP 47201A and Waters 0-1100 oximeters provided similarly accurate estimates of SAO2 once the characteristics of the individual oximeters were known (standard error of estimate; 2.52 and 2.98 per cent SAO2, respectively). The HP 47201A ear oximeter was relatively insensitive to changes in ear-piece position and differences in skin pigmentation, and offered the added advantages of comfort, simplicity of operation, and stability of characteristics.

摘要

在52名受试者处于急性进行性和稳定状态低氧血症期间，对三种耳部血氧计（沃特斯XP - 350、沃特斯0 - 1100、惠普47201A）的准确性进行了评估。将耳部血氧计的读数与动脉血或“动脉化”毛细血管血样本中测得的动脉血氧饱和度（SaO₂）进行比较。惠普（HP）47201A耳部血氧计的读数最接近测得的SaO₂（y = 0.99x - 1.52，r = 0.97），不过一旦了解了各血氧计的特性，HP 47201A和沃特斯0 - 1100血氧计对SaO₂的估计准确性相似（估计标准误差分别为SaO₂的2.52%和2.98%）。HP 47201A耳部血氧计对耳塞位置的变化和皮肤色素沉着差异相对不敏感，并且具有佩戴舒适、操作简单和特性稳定等额外优点。