GE CARESCAPE - PDM modules’ NIBP technology; PSM modules’ NIBP technology

Non-invasivebloodpressure
Therstdeterminationinitiallypumpsuptoatargetcuffpressureof160mmHgfor
adult,140mmHgforchild,or110mmHgforinfant.Theinitialtargetpressurepreset
canbeadjustedtoalower(orhigher)initialtargetpressure.l
PDMmodules’NIBPtechnology
PDMmodulesusetheDINAMAPSuperSTATtechnology.Thistechnologymeasures
themeanarterialpressureandthendeterminesthesystolicanddiastolicvalues.
However,thistechnologyalsoincorporatestheEK-Proalgorithm.
(Adult/childonly)WhenECGismonitored,SuperSTATNIBPisabletodetermineblood
pressureinthepresenceofirregularheartrhythms.AtthebeginningofaSuperSTAT
NIBPdetermination,thecoefcientofvariationfromtheprevious120ECGRRintervals
isusedtodetermineifanirregularrhythmispresent.
Therstdeterminationinitiallypumpsuptoadefaulttargetcuffpressureofabout
135mmHgforadults,125mmHgforchild,or100mmHgforinfant.Theinitialtarget
pressurepresetcanbeadjustedifyoudesirealower(orhigher)initialtargetpressure.
Toallowforrapidsettingofcuffpressure,themonitorwillmomentarilyinatetoa
higherpressure,thenimmediatelydeatetothetargetpressure.
Asadeterminationistaken,thepatternofthepatient'soscillationsizeisstoredasa
functionofpressure.Inanysubsequentdetermination,asfewasfourpressuresteps
maybenecessarytocompletetheprocess.Whenemployingfewerpressuresteps,the
systemusesthestoredinformationfromthepreviousbloodpressuredeterminationto
decidethebestpressurestepstotake.Theconsistencyofpulsesizesaremeasuredto
telliftheoscillationstakenatasteparegoodandifmorestepsareneeded.
Ifthecurrentbloodpressurereadingissimilartothepreviousreading,some
informationfromthepreviousbloodpressuremaybeusedinthecurrent
determination.Thedataisconstantlyevaluatedduringameasurementtotryto
performabloodpressuredeterminationintheshortestpossibletime,providing
greatercomforttothepatient.
Ifithasbeen16minutesorlesssincethelastdeterminationandthecurrentblood
pressureissimilartothepreviousreading,themonitorwilltrytomakeanaccelerated
determinationofbloodpressure.
Duringirregularrhythms,onlypulsesfromthecurrentdeterminationareusedin
calculatingthebloodpressurevalues.Inordertoensureadequateartifactrejection
capabilityandoptimalSuperSTATNIBPperformance,severalcriteriausedto
matchandqualifytheoscillometricpulsesateachpressuresteparerelaxedwhile
supplementingthecriteriawithadditionalinformationfromECG.
PSMmodules’NIBPtechnology
PSMuseatechnologysimilartoDINAMAPClassic,withtheexceptionofcuffdeation.
Inthisalgorithmthecuffpressureisdeatedcontinuously(linearbleed),asopposed
tostepdeation.
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