Vitalcare 506DN3, Service Manual

Page: 20 / 254

Section 1 —Introduction
Page 1-8 VitalCare
TM
506N3 Series Service Manual Criticare Systems, Inc.
Automatic Calibration
During monitoring, the instrument's software selects coefficients that
are appropriate for the wavelength of that individual OxiMax
sensor's
red LED; these coefficients are then used to determine SpO2.
Additionally, to compensate for differences in tissue thickness, the
light intensity of the OxiMax
sensor's LEDs is adjusted automatically.
Accuracy of
OxiMax Sensors
The accuracies of the OxiMax sensors are listed in the following
chart:
Functional versus
Fractional Saturation
This pulse oximeter measures functional saturation ñ oxygenated
hemoglobin expressed as a percentage of the hemoglobin that can
transport oxygen. It does not detect significant amounts of
dysfunctional hemoglobin, such as carboxyhemoglobin or
methemoglobin. In contrast, hemoximeters such as the IL482 report
fractional saturation ñ oxygenated hemoglobin expressed as a
percentage of all measured hemoglobin, including measured
dysfunctional hemoglobins. To compare functional saturation
measurements to those from an instrument that measures fractional
saturation, fractional measurements must be converted as follows:
OxiMax Sensor Models
SpO
2
Range 70-100%
Singl
e Use Sensors
MAX-A, MAX-AL ± 2
MAX-N (Adult) ± 2
MAX-N (Neonate) ± 3
MAX-P ± 2
MAX-I ± 2
MAX-FAST ± 2
Re
usabl
e Se
nsors
D-YS (Infant to Adult) ± 3
D-YS (Neonate) ± 4
D-YS & D-YSE (Neonate) ± 3.5
D-YS & D-YSPD ± 3.5
DS-100A ± 3
OXI-A/N (Adult) ± 3
OXI-A/N (Neonate) ± 4
OXI-P/I ± 3
functional saturation = x 100
fractional saturation
100 - (%carboxyhemo % methemoglobin )