PatientSpirometry
1.PEEPe
2.PEEPi
3.PEEPtot=PEEPe+PEEPi
PEEPi
NOTE
NotavailableinORandPACUsoftwarepackages.
Highrespirationrateorshortexpiratorytimemayleadtothedevelopmentofintrinsic
PEEP.Itisdetectedwhenalveolarpressureattheendoftheexpirationishigherthan
airwayopeningpressure.PEEPiislikelytooccurinpatientswithairowobstruction,
inverseratioventilationorpatientswithowlimitation.
DynamicPEEPiismeasuredcontinuouslyanddisplayedasadigit,butitisalso
presentedgraphicallyintheowwaveformandinloops:
x1=Time
x2=Vol
y=Flow
TheclinicalsignicanceofPEEPiisindetectingboththerespiratoryandhemodynamic
sideeffects:
●Respiratorysideeffects
■Barotraumas
■Musclefatigue
■Decreasedcompliance
■Reducedoxygendelivery
■Increasedventilatorydeadspace
●Hemodynamicsideeffects:
■Impededvenousreturn
■Increasedpulmonaryvascularresistance
■Reducedleftventricularcompliance
2062971-001CARESCAPEModularMonitors331