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TCYungPaediatricCardiologyUnitGranthamHospitalHongKongBiventricularpacinginababywithRVpacinginducedheartfailureThe10thSouthChinaInternationalCongressofCardiology,Guangzhou,2008
MalebabyAntenatalat21weekofgestationnotedhavebradycardiaandAVblockmotherantiRo,RF+veLSCSat35weeksforprogressivefetalheartfailure,birthweight2.36kgPost-natalRespiratorydistressCXR:cardiomegaly,CTratio67%PutonnasalCPAP+Isoprenalineinfusion
CTratio67%
TransfertoTGHonthedayofbirthEchoshowednormalheartstructure,LVSF38.9%,LVEDD2.78cmLVEF77.2%HR~50-60/min,systolicBP55mmHgwhileonisoprenalineinfusion
EpicardialpacemakerinsertiontheseconddayafteradmissionRARV(inferiorwall)pacingDDD(90-180/min)PostepicardialDDDpacing:CTratio67.9%
MeasurementatOperationLeads4965steroid-elutedleadsforbothRAandRVGenerator-SensiaSEDR01DDDRImpedance -Vlead589Ω -Alead343ΩApacingthreshold -1.8V0.5msVpacingthreshold -1.6V0.5msRwave 8.8mvPwave 3.4mv
Paradoxicalseptalmotion,LVEDD2.1cm,FS25.3%,LVEF58%3daysafterRVpacing
ECHOpostDDDpacing:ECHObeforeDDDpacing:
PericardialeffusionShortaxisviewLongaxisviewDay12postpacingSurgicaldrainageofpericardialfluid(30cc)
LVEDD2.76cm,FS14.6%,EF37.8%DilatedLVcavity3weekspostpacingDischargefromhospitalwithdiureticsPacingrate70-180/min
3.5monthspostRVpacing Significantheartfailuresymptom:tachypneaandfluidretentionEcho -dilatedLV,LVEDD3.3cm -ModeratetricuspidandmitralincompetencePoorLVcontraction,LVFS5%LVEF14.3%ECGshowedirregularrhythm,WenckebachphenomenonduetorapidatrialratewhileonDDDpacingPacemodechangedtoVVI130/minHospitalizedfordobutamineinfusion
ECHOprogressiveLVdilatation
SevereLVdysynchrony,LVPW–Septaldelay255ms
3daysafteradmissionWhenVVIturnedoff?intrinsicesc
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