Measured Versus Calculated Saturation; Oxi Max Technology; Figure 14: Oxyhemoglobin Dissociation Curve - Nellcor OxiMax N-595 Operator's Manual

Measured versus Calculated Saturation

O M Technology
XI AX
N-595
When saturation is calculated from a blood gas partial pressure of
oxygen (PO ), the calculated value may differ from the SpO
2
measurement of a pulse oximeter. This usually occurs because the
calculated saturation was not appropriately corrected for the effects of
variables that shift the relationship between PO
the partial pressure of carbon dioxide (PCO
hemoglobin. See Figure 14 on page 145.

Figure 14: Oxyhemoglobin Dissociation Curve

The N-595 pulse oximeter is designed to use Nellcor O
sensors, which integrate the O
sensors can be identified by their deep lavender/blue plug color. All
O M sensors contain a memory chip carrying information about
XI AX
the O M sensor, which the oximeter needs for correct operation,
XI AX
including the O M
XI AX
2
M technology. These O
XI AX
sensor's calibration data, model type,
Principles of Operation
2
and pH, temperature,
2
), 2,3-DPG, and fetal
M brand
XI AX
M
XI AX
145