LIMITATIONS OF FOREHEAD PULSE OXIMETRY

被引：18

作者：

JORGENSEN, JS ^{[1
]}

SCHMID, ER ^{[1
]}

KONIG, V ^{[1
]}

FAISST, K ^{[1
]}

HUCH, A ^{[1
]}

HUCH, R ^{[1
]}

机构：

[1] UNIV ZURICH HOSP,DEPT OBSTET,PERINATAL PHYSIOL UNIT,CH-8091 ZURICH,SWITZERLAND

来源：

JOURNAL OF CLINICAL MONITORING | 1995年 / 11卷 / 04期

关键词：

MONITORING; PULSE OXIMETRY; MEASUREMENT TECHNIQUES;

D O I：

10.1007/BF01617520

中图分类号：

R614 [麻醉学];

学科分类号：

100217 ;

摘要：

During initial clinical tests to calibrate our reflectance pulse oximetry system, we observed serious physiologic limitations to the use of pulse oximetry in the forehead region. We present a case of simultaneous reflectance and transmission mode pulse oximetry monitoring in a child undergoing cardiac surgery for congenital cyanotic heart disease with a large intracardiac shunt. During general anesthesia, when the patient was endotracheally intubated and mechanically ventilated, the transmission mode saturation agreed well with arterial oxygen saturation measurements; but, our reflectance pulse oximeter, with the sensor applied to the forehead, displayed spuriously lower (-18%) oxygen saturations. Before and after anesthesia and surgery, there was fine agreement between reflectance and transmission mode saturation values. We suggest that the difference was caused by vasodilatation and pooling of venous blood due to compromised venous return to the heart, and a combination of arterial and venous pulsations in the forehead region. This means that the reflectance pulse oximeter measured a mixed arterial-venous oxygen saturation.

引用

页码：253 / 256

页数：4

共 14 条

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