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Page 143
Technical Data
12
User guide
Technical data - monitoring
12.4
A
rt.
no.
: 0-48-
0227
Rev.:
g
DEFIGARD/PHYSIOGARD Touch 7
a.
SpO
2
, SpCO and SpMet accuracy was determined by testing on healthy adult volunteers in the range of 60-100% SpO
2
, 0-40% SpCO, and 0-15%
SpMet against a laboratory CO-Oximeter. SpO
2
and SpMet accuracy was determined on 16 neonatal NICU patients ranging in age from 7-135
days old and weighing between 0.5-4.25 kg. Seventy-nine (79) data samples were collected over a range of 70-100% SpO
2
and 0.5-2.5%
MetHb with a resultant accuracy of 2.9% SpO
2
and 0.9% SpMet.
The Masimo sensors have been validated for motion accuracy in human blood studies on healthy adult male and female volunteers with light to
dark skin pigmentation in induced hypoxia studies in the range of 70-100% SpO
2
against a laboratory CO-oximeter and ECG monitor. This
variation equals plus or minus one standard deviation which encompasses 68% of the population.
The Masimo SET Technology has been validated for low perfusion accuracy in bench top testing against a Biotek Index 2 simulator and Masimo’s
simulator with signal strengths of greater than 0.02% and transmission of greater than 5% for saturations ranging from 70 to 100%. This vari-
ation equals plus or minus one standard deviation which encompasses 68% of the population.
The Masimo sensors have been validated for pulse rate accuracy for the range of 25-240 bpm in bench top testing against a Biotek Index 2 simu-
lator. This variation equals plus or minus one standard deviation which encompasses 68% of the population.
The following substances may interfere with pulse CO-Oximetry measurements:
- Elevated levels of Methaemoglobin (MetHb) may lead to inaccurate SpO
2
and SpCO measurements
- Elevated levels of Carboxyhaemoglobin (COHb) may lead to inaccurate SpO
2
measurements.
- Very low arterial Oxygen Saturation (SpO
2
) levels may cause inaccurate SpCO and SpMet measurements
- Severe anaemia may cause erroneous SpO
2
readings.
- Dyes, or any substance containing dyes, that change usual blood pigmentation may cause erroneous readings.
- Elevated levels of total bilirubin may lead to inaccurate SpO
2
, SpMet, and SpCO readings.