GE CARESCAPE - Level of anesthesia: E-sCAiO, E-sCAiOV, E-CAiO, E-CAiOV, E-CAiOV; Airway gases troubleshooting

Airwaygases
Topreventhypoxemiaandtoensuresafeandsufcientoxygensupply,thealveolar
oxygenconcentration(EtO
2
)shouldbeatthelevelof25%minimum.
Nitrogenelimination
Duringthemaintenanceofminimallowowanesthesia,asmallamountofnitrogen
mayaccumulateinthecircuit.Itmaybedetectedasdecreasedconcentrationof
othergases,andeliminatedbytemporarilyincreasingthefreshgasow.
Flowreduction
ReductionoffreshgasowmayincreaserebreathingincaseofaCO
2
absorber
malfunctionorduringtheuseofopenanesthesiagasdeliverysystems.
Thelowerthefreshgasow,thehighertheoxygenconcentrationrequiredinthe
freshgas.
Levelofanesthesia:E-sCAiO,E-sCAiOV,E-CAiO,E-CAiOV,
E-CAiOVX
Anestheticagentuptake
Freshgasowreductiondecreasesthetotalamountofanestheticagentfedintothe
breathingsystemifagentconcentrationismaintainedconstant.
Thelowerthefreshgasowrate,thelongerthetimerequiredtoreachtheeffectofa
changeinthefreshgassettings.
Airwaygasestroubleshooting
ProblemSolution
Airwaygasvaluesaretoolow●Checkthesamplinglineandconnectorsfor
leakage.
●Checkthepatientstatus.
Airwaygasvaluesaretoohigh●Checkthesamplinglineforblockage.
●Checkthepatientstatus.
Moduledoesnotwork●Checkandcleanthelterifnecessary.
●Checkthewatertrapcontainer.Ifitistoofull,
liquidmayhaveenteredthemodule.Replacethe
moduleandhaveitcheckedbyauthorizedservice
personnel.
Noairwaygasvalues●Checkthatthegassamplinglineisconnectedto
thewatertrap.
●Checkthatthegassamplinglineisconnectedto
thepatient.
Whycanweseedipsinthecapnogramduring
expiration?
●Thedipsseeninthecapnogramduringexpiration
arerelatedtothesidestreamgassampling,the
continuousgasowtotheY-piece,andpatient’s
cardiaccontractions,whichcauseintra-thoracic
pressurechangesandthereforeowvariations.
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