GE CARESCAPE - Entropy troubleshooting

Entropy
●Entropyisnotaparameterformonitoringneuromuscularblockade.Though
REmaygiveanindicationofthepatient’sreactiontoexternalstimuli,suchas
intubationandskinincision,thelevelofneuromuscularblockadeshouldbe
assessedwithNMT,whichisanactiveassessmentoftheeffectsofneuromuscular
blockadeagentsontheneuromuscularjunction.
●Neuromuscularblockingagents(NMBA)administeredinsurgicallyappropriate
dosesarenotknowntoaffecttheEEG,butareknowntohaveaneffectonthe
EMG.REvaluesmaydropinresponsetoNMBAadministration,duetoparalysis
offacialmuscles.
●TheEntropysensorsandcablearedesignedtobedebrillation-proof.
Entropytroubleshooting
ProblemSolution
Entropyvaluesseemunstable●Checkthatthesensorisnotdriedout.
●Checkthesensorattachmentandplacement.
●Checkthepatientstatus.
EntropyEEGsignalisnoisy●Removedisturbingequipmentfromtheproximity
oftheEntropymoduleorsensor.
●Checkthesensor’scontactwithskin.
●Checkelectrodes.
EntropyEEGsignalispoor●Checkthesensor’scontactwithskin.
●Checkelectrodes.
EntropyEEGwaveformandnumbersdonot
correspond
●CheckrawEEGasimpedancecheckmaycausea
temporaryincreaseinthenumericvalues.
●Checkthepatient’soverallstatus.
Entropyreadingsseeminconsistentwiththepatient
status
●CheckrawEEGforQRSorotherartifact.
●Checkelectrodeplacement.
Thereisasuddendropinvalues.Asuddendropinvaluescanbecausedbythe
following:
●Bolusadministrationofintravenousanesthetics.
●Increaseininhalationanesthesialevel.
●Administrationofothermedicationaffecting
EEG/FEMG.
Thereisanunexpectedincreaseinvalues.Anunexpectedincreaseinvaluescanbecausedby
thefollowing:
●Changeininfusionpumpsettingsforintravenous
anesthetics.
●Changeinvaporizersettings,orfresh-gasow
rate.
●Volumeloadingwithinfuseduids.
●Faultintheoperationofanestheticdelivery
systems.
●Impedancecheck.
358CARESCAPEModularMonitors2062971-001