脉搏血氧仪：胸外科手术期间的一种无创氧合监测仪。

The pulse oximeter: a non-invasive monitor of oxygenation during thoracic surgery.

作者信息

Thys D M, Cohen E, Girard D, Kirschner P A, Kaplan J A

出版信息

Thorac Cardiovasc Surg. 1986 Dec;34(6):380-3. doi: 10.1055/s-2007-1022178.

DOI:10.1055/s-2007-1022178

Abstract

The pulse oximeter continuously and non-invasively measures arterial saturation. The objective of the current study was to assess the value of this monitor during thoracic surgery with one-lung ventilation. A total of 108 pulse oximeter saturation readings (SaO2[O]) were compared with PaO2 and calculated saturation (SaO2[C]) values. Hypoxia (PaO2 less than 70 mmHg) always resulted in a SaO2 (O) value below 95%. For the detection of hypoxia, the pulse oximeter had a sensitivity of 100%, a specificity of 91% and a predictability of 70%. The correlation between SaO2(C) and SaO2(O) was good (r = 0.895). In the samples with a PaO2 below 100 mmHg the correlation between SaO2(C) and SaO2(O) was significantly better when the temperature was at least 36 degrees C (r = 0.956 vs. r = 0.706; p less than 0.005) or when the cardiac index was greater than 2.5 l/min/m2 (r = 0.896 vs r = 0.417; p less than 0.01).

摘要

脉搏血氧仪可连续、无创地测量动脉血氧饱和度。本研究的目的是评估该监测仪在单肺通气胸外科手术中的价值。共将108次脉搏血氧仪测得的血氧饱和度读数（SaO2[O]）与动脉血氧分压（PaO2）及计算得出的血氧饱和度（SaO2[C]）值进行了比较。低氧血症（PaO2低于70 mmHg）总会导致SaO2（O）值低于95%。对于低氧血症的检测，脉搏血氧仪的敏感度为100%，特异度为91%，预测能力为70%。SaO2（C）与SaO2（O）之间的相关性良好（r = 0.895）。在动脉血氧分压低于100 mmHg的样本中，当温度至少为36摄氏度时（r = 0.956对r = 0.706；p < 0.005），或心脏指数大于2.5 l/min/m2时（r = 0.896对r = 0.417；p < 0.01），SaO2（C）与SaO2（O）之间的相关性明显更好。