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SpO
2
Module (Optional)
SpO
2
Module (Optional)
Introduction
Pulse oximetry is a non-invasive method allowing the monitoring of the arterial oxygen
saturation of a patient's hemoglobin.
A sensor is placed on a thin part of the patient's body, usually a fingertip or earlobe, or in the
case of an infant, to the foot or forehead. Light with red wavelengths and infrared wavelengths
is sequentially passed from the light (photo) emitter to the photo detector on the other side.
Measuring the change in the absorbance of each of the two wavelengths allows determination
of the absorbance due to the pulsing arterial blood alone, excluding venous blood, skin, bone,
muscle, fat, and (in most cases) fingernail polish. Based upon the ratio of changing blood
absorbance of the red and infrared light, a measure of oxygenation (SpO
2
- the percent of
hemoglobin molecules bound with oxygen molecules) can be made.
Populations that May Use the SpO
2
Function
The SpO
2
Module is intended for use with neonatal, pediatric, and adult patients during both
no motion and motion conditions and for patients who are either well or poorly perfused,
dependent on the SpO
2
sensor used.
SpO
2
Sensors for the NELL-1 SpO
2
Module
The NELLCOR DS100 SpO
2
sensor is used with the Starling Monitor with SpO
2
functionality. In
addition, the Starling with NIBP and SpO
2
functionality is also compatible with any of the
following NELLCOR SpO
2
sensors that have the accuracy specifications (ARMS
1
) outlined in
Table C-4.
1.ARMS (Accuracy Root Mean Squares): All accuracies are expressed as ± “X” digits. Pulse oximeter equip-
ment measurements are statistically distributed; about two thirds of pulse oximeter measurements can be
expected to fall in this accuracy (ARMS) range.
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