Philips Expression MR400 - Page 388

A‐20Specifications ExpressionMR400InstructionsforUse
DividedCannula,Infa nt Halothane—
Systemresponse:9.98seconds
Risetime:3.95seconds
Enflurane—
Systemresponse:7.32seconds
Risetime:1.37seconds
Isoflurane—
Systemresponse:6.75seconds
Risetime:0.89seconds
Sevoflurane—
Systemresponse:5.45seconds
Risetime:0.67seconds
Desflurane—
Systemresponse:6.25seconds
Risetime:0.60seconds
Oxygen—
Systemresponse:
7.25seconds
Risetime:0.84seconds
Nitrousoxide—
Systemresponse:6.51seconds
Risetime:0.39seconds
CO2—
Systemresponse:5.49seconds
Risetime:0.49seconds
DataSampleRate 25Hz
FullAccuracyRespirationRate
(Rangepermittingspecifiedgasaccuracy)
2to60rpm
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.
End‐tidalgasreadings,calculationmethod EndtidalCO2concentrationreadingsareidentifiedbyusingthe
highestvalueofthetemporalCO2‐curve.Correspondingreadingsof
N2Oandanestheticagentsaretakenatthesamepointinti me.End‐
tidalO2concentrationreadingsareidentifiedbytheO2meanvalue
during
therespiratoryphaseasidentifiedbythetemporalCO2
curve.Oncecorrectlyidentified,thelowestO2concentration
readingduringthephasewillbepresentedasend‐tidalO2.
Tota l RespirationRange 2to100rpm;accuracyisunspecifiedfrom60to100rpm
AGENT (Optional)