Interconnection Cables - GE ApexPro TT Technical Manual

Equipment Overview

Interconnection cables

Apex oximeter and Accutracker DX
2-16
SpO2 = O2Hb + COHb + MetHb
SaO2 = 100 x O2Hb /(100 - COHb - MetHb)
Where:
SpO2 = Pulse oximeter determined and displayed oxygen saturation in percent
O2Hb = Fractional oxyhemoglobin saturation in percent
COHb = Carboxyhemoglobin saturation in percent
MetHb = Methemoglobin saturation in percent
SaO2 = Functional oxygen saturation in percent
The following table gives examples of the oximeter readings:
Example 1
O2Hb = 96
COHb = 0.5
MetHb = 0.6
SpO2 = 97
SaO2 = 97.07
The mathematics are fixed in the pulse oximeter hardware and software. Thus, no
field calibrations are needed or are possible. There are no adjustable parts within the
pulse oximeter that affect the calibration.
The function f, depends on the wavelengths of the sensor LEDs. These wavelengths
are fixed by specified manufacturing processes and materials. The sensors are
checked for correct operation before shipping, so no adjustment or calibration is
needed or possible.
Because the pulse oximeter does all critical computations in software and there are no
critical parts to drift; no re-calibration is needed.
NOTE
Refer to the ApexPro Telemetry System or CARESCAPE Telemetry T14
transmitter Operator's Manual for further details on interconnection cables.
The interconnection cable used to connect the transmitter with the Apex Oximeter
and/or the Accutracker DX blood pressure monitor, and/or the DinaLink serial cable.
ApexPro™
Example 2
O2Hb = 88
COHb = 8
MetHb = 2
SpO2 = 98
SaO2 = 97.78
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