GE CARESCAPE - Page 253

Invasivepressures
ProblemSolution
ThemeasurementvaluesintheSPVandPPV
parameterwindowarenotdisplayed.
●Ensurethattherearenoarrhythmiaspresent.
●Checkthatthecorrectarterialsitehasbeen
selectedastheSPVsource.
●IfyouareusingtheSPVmeasurementintheNICU
softwarepackage,onlymanualmeasurementis
shown.
●Thealgorithmrequiresatleastthreepulsebeats
pereachrespirationcycleandwhenthisisnot
true,thevaluesarenotshown.Tryusingmanual
measurement.
Whyaredisplayedpressurevaluesdifferentthan
expected?
●Checkthepatient.Valuescouldbevalid,the
patientcouldbelyingonthetubing,orthetubing
couldbekinked.
●Checktubingforbubbles.
●Removeexcesstubing.
●Checkphlebostaticaxisplacementoftransducer.
●Rezeropressure.
●IfpatientisonIABP,verifythatthemonitor’sIABP
programisturnedon.Ifnecessary,turniton.
Whyarethearterial,non-invasive(oscillometric),
andauscultatedbloodpressurereadingsindicating
differentvalues?
Thethreemeasurementmethodsusedifferent
technologies.Auscultationandoscillometricare
bothindirectmethodsofmeasuringbloodpressure.
Inauscultation,changesinarterialsoundsduring
cuffdeationarerelatedtosystolicanddiastolic
pressure.Withoscillometricmeasurement,changes
inmeasuredpressureoscillationsduringcuff
deationarerelatedtosystolic,meananddiastolic
pressures.Changesinthevasculartoneofthe
arterialsystemcancausethesetwoindirectmethods
todifferfromoneanotherandfromdirectarterial
pressuremeasurements.
Invasivearterialbloodpressureisadirectmethod
ofmeasuringbloodpressure.Differencesbetween
directandindirectbloodpressuremeasurementsare
expected.Thesedifferencesoccurbecausedirect
methodsmeasurepressureandindirectmethods
measureow.Inaddition,differencesoccurbecause
themeasurementlocationisnotthesame(e.g.,
brachialarteryforNIBPvs.radialarteryforinvasive
arterialpressuremonitoring).
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