GE CARESCAPE User Manual

Pulseoximetry
SpO
2
troubleshooting
ProblemSolution
SpO
2
signalispoor
●Checkthesensorandsensorposition.
●Makesurethepatientisnotshivering,moving,ordoesnothavetremors.
●Thepatient’spulsemaybetoolowtomeasure.
Unabletoadjustalarm
limits
Thealarmlimitsarenotadjustablewhenthemeasurementsourceisfroman
externaldeviceconnectedtotheUnityNetworkIDconnectivitydevice.
DeactivatedSpO
2
probe
offalarmkeepsalarming
whenthesensoris
disconnectedfromthe
patient.
●Ensurethatthesensorisprotectedfromambientlight.
Whydoesthepulse
oximetersometimesread
differentlythanablood
gasanalyzer?
BloodgasanalyzerscalculatetheO
2
saturationbasedonnormalvaluesforpH,
PaCO
2
,Hb,temperature,etc.(i.e.,anormaloxyhemoglobindissociationcurve).
Dependingonthepatient’sphysiologicandmetabolicstatus,thiscurveandall
valuesmaybeshiftedawayfromnormal.Thustheoximeter,whichmeasuresO
2
saturation,maynotagreewiththebloodgas.
Whateffectcanambient
lighthaveonpulse
oximetrymonitoring?
Lightsourcessuchassurgicallamps,bilirubinlamps,uorescentlights,infrared
heatinglamps,andsunlightcancausepoorwaveformqualityandinaccurate
readings.Errormessagesarepossible.Shieldingthesensorwithopaquetape,the
poseywrap,orotherdarkoropaquematerialcanincreaseoximetryaccuracy,
veriedbygoodwaveformandsignalstrength.
Whatdoes
electrosurgical
interferencelooklikeand
howcanitbeminimized?
Electrosurgicalinterferenceismostobviousonthedisplayedwaveform.Itisavery
spiky,erraticlookingwaveformcausedbytheelectrosurgicalunit’soverwhelming
interference.Itcanresultingrosslyinaccuratepulseoximeterresults.
Electrosurgicalinterferencecanbeminimizedby:
●Makingsurethepulseoximetersensorisasfarawayfromthereturnpad
andoperatingsiteaspossible.
●Makingsurethesensorisnotbetweenthereturnpadandoperatingsite.
●Keepingthepowercordandsensorcableawayfromthepowercordofthe
electrosurgicalunit.
●Pluggingtheelectrosurgeryunitintoaseparatesetofoutletsfromthemonitor.
Whatdoesmotion
artifactlooklike,what
problemscanitcause,
andhowcanitbe
corrected?
FormodulesusingNellcorOxiMaxandGEMarquettetechnologies,themain
problemmotionartifactcancauseiserroneousSpO
2
readings.
Motionartifactoccurswithexcessivemotionofthesensor,thecableleadingto
thesensor,orthecable/sensorjunction.Inotherwords,anythingthatcausesany
ofthesethingstomove,likethepatientmovinghishands,orthecablelying
acrosstheventilatortubingandbeingmovedwitheverycycle,cancausemotion
artifact.Anon-arterial,oftenerraticlookingwaveformandapulseratethatdoes
notcoincidewiththeheartrateontheECGwillresult.
Motionartifactcanbereduced,ifnoteliminated,byselectinga“quieter”siteon
thepatient.Anearsensorifthehandsdonotremainstill,anadhesivesensor
onthetoe,oranadhesivesensoronthelittlengerforanadultoronthesoleof
thefootinanewborncanhelpgreatly.
Cablemovementcanbereducedbyapplyingthesensorwiththecableleading
towardthepatient,thentapingthecabletothesideofthehandorfoot.The
cableandsensorcanalsobestabilizedwithastressloopnearthesensor.Tape
216CARESCAPEModularMonitors2062971-001

GE CARESCAPE Specifications

General

Category	Medical Equipment
Type	Patient Monitor
Display Type	Color TFT LCD
Manufacturer	GE Healthcare
Display Size	12.1 inches
Connectivity	USB
ECG	Yes
Respiration	Yes
SpO2	Yes
NIBP	Yes
Temperature	Yes
Invasive Blood Pressure	Yes
Cardiac Output	Yes
Networking	Yes
Data Storage	Yes
Model	CARESCAPE
Parameters Monitored	ECG, Respiration, SpO2, NIBP, Temperature, Invasive Blood Pressure, Cardiac Output
Alarms	Yes
Power Supply	AC power, internal battery
Operating Temperature	10°C to 40°C