机械通气图课件

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1、EssentialsofVentilatorGraphics©2000RespiMeduDevelopedby:RubenDRestrepo,MD,RRTVijayMDeshpande,MS,RRT,FAARCAssistantProfessorsGeorgiaStateUniversityAtlanta,GeorgiaESSENTIALSOFVENTILATORGRAPHICSRespiMedu2000EssentialsofVentilatorGraphics©2000RespiMeduCOPYRIGHTN

2、OTICE©2000RespiMedu,Inc.EssentialsofVentilatorGraphics.Allrightsreserved.ExceptaspermittedundertheCopyrightActof1976,nopartofthismaterialmaybereproducedinwholeorinpartinanymannerwithoutpermissioninwritingfromthecopyrightowners.PrintedintheU.S.A.EssentialsofV

3、entilatorGraphics©2000RespiMeduMechanicalVentilationGraphicsSCALARSLOOPSEssentialsofVentilatorGraphics©2000RespiMeduSCALARSFlow/TimePressure/TimeVolume/TimeEssentialsofVentilatorGraphics©2000RespiMeduPressure-VolumeFlow-VolumeLOOPSEssentialsofVentilatorGraph

4、ics©2000RespiMeduSCALARSFlow/TimePressure/TimeVolume/TimeEssentialsofVentilatorGraphics©2000RespiMeduSpontaneousBreathTime(sec)Flow(L/min)InspirationExpirationEssentialsofVentilatorGraphics©2000RespiMeduMechanicalBreathInspirationExpirationFlow(L/min)Time(se

5、c)EssentialsofVentilatorGraphics©2000RespiMeduTypicalFlowPatternsACCELERATINGDECELERATINGSINESQUAREEssentialsofVentilatorGraphics©2000RespiMeduInspiratoryFlowPatternInspirationExpirationTime(sec)Flow(L/min)BeginningofinspirationexhalationvalveclosesPeakinspi

6、ratoryflowratePIFRBeginningofexpirationexhalationvalveopensTotalcycletimeTCTInsp.timeTIExpiratoryTimeTEEssentialsofVentilatorGraphics©2000RespiMeduExpiratoryFlowPatternInspirationExpirationTime(sec)Flow(L/min)BeginningofexpirationexhalationvalveopensPeakExpi

7、ratoryFlowRatePEFRDurationofexpiratoryflowExpiratorytimeTEEssentialsofVentilatorGraphics©2000RespiMeduInadequateInspiratoryFlowFlow(L/min)Time(sec)NormalAbnormalActiveInspirationorAsynchronyPatient’seffortEssentialsofVentilatorGraphics©2000RespiMeduObstructi

8、onvsActiveExpirationObstructionActiveExpirationTime(sec)NormalAbnormalFlow(L/min)EssentialsofVentilatorGraphics©2000RespiMeduAirTrappingInspirationExpirationNormalPatientTime(sec)Flow(L/min)AirT