GE CARESCAPE - NIBP measurement technologies

Non-invasivebloodpressure
pressures,theamplitude(whichchangesbasedonthepressurewithinthecuff)and
thefrequencyofthesepulsations(whichisdependentonthepatient’sheartrate),
oscillometricdevicescannon-invasivelydeterminebloodpressure.
●x=Time(s)
●y=Pressures
1.Systolic(50%)
2.Mean(100%)
3.Diastolic(75%)
4.Extractedpulsewave
5.Cuffpressure
NIBPmeasurementtechnologies
TheDINAMAPClassictechnologymeasuresthemeanarterialpressure,then
determinesthesystolicanddiastolicvalues.Thetechnologyexaminespulsesfromthe
cuffandwaitsfortwosequentialpulsesequalinbothfrequencyandamplitude.Itwill
notdeatethecuffuntilithasgooddata.Artifactandfalsepulsesarerejected.
Therstdeterminationinitiallypumpsuptoatargetcuffpressureof160mmHgfor
adult,140mmHgforchildor110mmHgforinfant.Theinitialtargetpressurepreset
canbeadjustedtoalower(orhigher)initialtargetpressure.
PDMandTRAMusetheDINAMAPStepDeationtechnology.Duringthedeation
process,themonitormeasurestwoconsecutivepulsationsincuffpressure.Iftheir
amplitudediffersbyanacceptablysmallamountandthetimeintervalbetweenthe
pulsationsmatchestheprevioustimeintervals,thepulsationsareaveragedand
storedalongwiththecorrespondingcuffpressure.Thecuffisthendeatedtothe
nextstep(instepsof5-10mmHg).Asthedeationoccurs,oscillationwavesare
assessedforstrengthandamplitudeuntilthemaximumoscillationamplitudeor
MAPisobtained.
Ifeitheroftheabovecriteriaisnotmet,thecuffpressureismaintaineduntiltwo
consecutivepulsationsaredetectedthatmeetthecriteria.Eventually,ifthecuffis
maintainedatonepressurestepforlongerthanoneminuteorthedeterminationtime
exceedstwominutes,themonitorwilltimeoutanddisplayanerror.
2062971-001CARESCAPEModularMonitors229