GE CARESCAPE - Gas exchange cautions; Gas exchange measurement limitations; Gas exchange points to note

Gasexchange
WARNING
Measurementresultsarevalidonlywhentherespiration
rateis<35/minuteduetonon-adequatetimeforaccurate
sampling.
VO
2
/VCO
2
valuescannotbemeasuredcorrectly:
●Withaleakingairway
●WithFiO
2
>85%
●IfN
2
Oisusedinventilation
●IfthedeliveredFiO
2
levelisuctuatingduringinspiration
●IfHeliumorXenonareusedinventilation
Measurementscannotbetakenduringthefollowing
ventilationmodesduetonon-adequatetimeforaccurate
sampling:
●Highby-passow
●Highfrequencyventilation(HFV)
●Bi-levelpositiveairwaypressure(BiPAP)
Gasexchangecautions
CAUTION
Neverconnectthelooseendofthegassamplinglineto
thePatientSpirometryconnectorasthismaybreakthe
spirometryunit.ThePatientSpirometryconnectorismeant
forthePatientSpirometrytubeonly.
CAUTION
Donotapplypressurizedairorgastoanyoutletortubing
connectedtothemonitor.Pressuremaydestroysensitive
elements.
Gasexchangemeasurementlimitations
●ThismeasurementisnotavailableintheNICUsoftwarepackage.
●E-modulescanbeusedwithintheirspeciedperformancerangewithOR,PACU,
ICU,andEDsoftwarepackages.
●OnlytheE-CAiOVXandE-COVXmodulesmeasuregasexchange.
NOTE
Routinecalibrationchecksarerequiredtoensurethe
measurementaccuracy.
Gasexchangepointstonote
●Gasexchangemeasurementisforintubatedpatientsonly.
●Useonly2-meter(7-ft)gassamplinglines.Usingotherlinesmaycauseinaccurate
readings.
●FiO
2
deliveryfromtheventilatorsideshouldbestable.
●HighPEEPorventilatingpressuresmayactivateamessagepromptingtocheckthe
watertrap.Inthiscase,youmayconsiderdecreasingthePEEPifpossible.
●Toensuremeasurementaccuracy,checktheaccuracyofairwaygasmeasurement
onceamonth:feedcalibrationgasmixturetothemonitorinthenormaloperation
mode(withoutenteringthecalibrationmenu)andcheckthatthereadingsonthe
340CARESCAPEModularMonitors2062971-001