dr.ChrisR.Mol,BME,NORTEC,2015

Resuscitaire Use: Approach / priorities

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dr.ChrisR.Mol,BME,NORTEC,2015

Apgar score and Apgar timer

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Thetestisgenerallydoneatone and five minutes after birth,andmayberepeatedlaterifthescoreisandremainslow.

• Apgarscores7andabovearegenerallynormal,• Apgarscores4to6fairlylow,• Apgarscores3andbelowaregenerallyregardedascriticallylow.

AnApgar Timer willsoundabuzzerforthedurationof3secondsatintervalsof1, 5, and 10 minutes,therebysupportingtheusertotaketheApgarscoresatpreciseintervals.

Alowscoreontheone-minutetestmayshowthattheneonaterequiresmedicalattentionbutdoesnotnecessarilyindicatealong-termproblem,particularlyifthescoreimprovesatthefive-minutetest.AnApgarscorethatremainsbelow3atlatertimes—suchas10,15,or30minutes—mayindicatelonger-termneurologicaldamage.

NotthattheApgartest'spurposeistodeterminequicklywhetheranew-bornneedsimmediatemedicalcare.Itisnotdesignedtopredictlongtermhealthissues.

dr.ChrisR.Mol,BME,NORTEC,2015

Components (selection)

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TheBassinetsideandfrontpanelsmaybefoldeddowntopermitmaximumaccesstotheinfant.Themattressmaybetiltedupintherearata5or10degreeangle.Openingsareprovidedoneachsideofthebassinetfortheinsertionofan(optional)X-rayCassetteTray.

TheControllercontrolsallfunctions,includingtheuserinterfacecontrol,thetimingofthepre-heating,alarms,theApgarTimer,theSkinTemperatureprobe,thermostat,etc.etc.

TheBlended Gas supply unit mixesairandoxygen,tobeusedduringventilation.

TheSuction machine, bottle and filter areneededtoe.g.removefluidsfromnew-bornairways.

dr.ChrisR.Mol,BME,NORTEC,2015© Resuscitaire

Ventilator and Gas supply

control(example)

dr.ChrisR.Mol,BME,NORTEC,2015

Alarms

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High Temperature Alarm:whenskintemperatureexceeds39.0OCtheheaterisautomaticallyturnedoffandanalarmisgiven.

Probe fail Alarm:iftheSkinTemperatureProbefails(short-circuitedoropen).

Apgar Timer:thetimerwillshowelapsedminutesandsecondsandtheaudiblealarmwillsoundatthe1,5and10minuteApgartimeintervals.

Baby Temperature Alarm:whenthetemperaturesensedbytheSkinTemperatureProbeis1OCaboveor1OCbelowtheselectedSetTemperatureDisplaysetting.

Power Fail Alarm:ifthePowerisinterruptedwhilethecontrollerison.

System Fail Alarm:ifaninternalmalfunctionisdetected;anerrorcodemaybedisplayed.

Blender Differential Bypass Alarm:willsoundwhenthepressuredifferentialbetweenO2andAirsuppliesexceeds20psi.Whenthisoccurs,theblenderwillcontinuetosupplywhichevergasisatthehigherpressure:either100%airor100%Oxygen.

dr.ChrisR.Mol,BME,NORTEC,2015

Input / Output

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Inputs• air• oxygen• water• power

Outputs• air/oxygenunderpressureforventilation• heatforwarming• light• suction• alarms

dr.ChrisR.Mol,BME,NORTEC,2015

Trouble shooting: temperature measurement

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Thetemperature probe isafrequentproblem.Thetechnologyintheprobeissimple;typicallyjustathermistor.However,determiningtheexacttypeandresistanceofthermistorrequiresdatafromthemanufacturer.Ifthisdatacanbeobtained,thanareplacementprobecanbemanufacturedfromastandardthermistorandtheproperconnector.Withoutthemanufacturer’sdata,itcanbeimpossibletoconstructtheprobe.

Apossiblesolutiontoamissingthermistorprobeistoplaceaknown,fixedresistorinitsplace,essentiallyforcingthedevicetooperateinmanual mode.Apotentiometercanbeusedtodeterminethevalueofresistancethatisrequiredtoforcethelightstocomeon.

Thermocouple probes aresometimesusedonwarmingunits,inwhichcasearesistancewillnotsubstitutefortheprobe.Avoltagesourcemightwork,however.Usingapotentiometer,abatteryandafixedresistor,avoltagedividercansometimesbecreatedandadjusteduntilthewarmingunitcomeson.Sincethedeviceisnowinmanualmode,careshouldbeusedtoinsurethatthepatient’stemperatureiscarefullymonitored.

dr.ChrisR.Mol,BME,NORTEC,2015

Trouble shooting

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Thesametypesoffaultsoccurasonanaestheticmachine:• gasleaks,• rotametersstuck,• suctionnotworking,

thesecanbedealtwithinthesamewayasdescribedinthosesections.

Thesystemneedstobecheckedforelectricallysafetyatleastonceayear.

ENDThecreationofthispresentationwassupportedbyagrantfromTHET:

seehttps://www.thet.org/