Philips Expression MR400 - Page 379

ExpressionMR400InstructionsforUse SpecificationsA‐11
FractionalinspiredCO2(FiCO2)Measurement
Range
3to50mmHg(0.4to6.7kPa)
Method:LowestreadingoftheCO2waveformintheprevious20
seconds
CO2Accuracy
(Allmeasurementsatgastempof25°C)
±4mmHg(±0.5kPa)or±12percent,
whicheverisgreater,after
thespecifiedwarm‐upperiod
CO2Stabilit y
ShortTermDrift
LongTermDrift
Nottoexceed0.8mmHg(0.1kPa)overa4‐hourperiod
Accuracyspecificationmaintainedovera120‐hourperiod
RespirationAccuracy ±1breathor±3percent,whicheverisgreater
RespirationResolution 1breathperminute
RespirationRateRange
(Inwhichtherespirationaccuracyspecification
ismet)
4to100breathsperminute,inclusive
Note
A simulator was used to simulate breathing rates and calibrated gas was flowed through the simulator and into the
system, and effects on accuracy were recorded to determine the rated respiration rate range and the corresponding
effects of end-tidal gas reading accuracy as a function of respiratory rate.
Accessoryusage Functionalwithoutchangingaccessoriesforaminimumof6
hours
SystemResponseand RiseTimes
(Asmeasuredfromthepatientgasinputofthe
completepneumaticcircuit,includingtubing,
from10–90percentofthemeasuredCO2lev‐
els)
AirwayAdapter Systemresponse:10.89seconds
Risetime:0.94seconds
CO2Cannula Systemresponse:
12.44seconds
Risetime:1.12seconds
DividedCannula Systemresponse:16.17seco nds
Risetime:2.01seconds
CO2 (Optional LoFlo)