简介：ＡＤＹＮＡＭＩＣＥＣＧＭＯＮＩＴＯＲＩＮＧＡＮＤＲＥＣＯＲＤＩＮＧＳＹＳＴＥＭＬｉｊｕｎＴｉａｎ，ＺｏｎｇｚｈａｎＤｕ，ＤｏｎｇｑｉｎｇＷａｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＥｌｅｃｔｒｉｃａｌＰｏｗｅｒＳｈａｎｄｏｎｇＰｏｌｙｔｅｃｈｎｉｃＵｎｉｖｅｒ...

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简介：Prematureventricularcontraction(PVC)isthemostfrequentarrhythmiaencounteredinclinicalpractice.PVCmayoccurinhealthsubjects,whichisnotimminentlylife-threateningbutmayrequiretherapiestopreventfurtherproblems.So,thetimelyPVCrecognitionbecomesveryimportantfortheanalysisofelectrocardiogram(ECG),especiallyfortheremoteECGmonitoringusingmobilephones.Inthispaper,aconstructionmethodofpersonalizedECGtemplateandaPVCrecognitionmethodbasedontemplatematchingwerestudied.Firstly,weselected43ECGrecordingsfromtheMIT-BIHarrhythmiadatabase.Allrecordingsweredividedintotwodatasets(DS1fortrainingandDS2fortesting)andeachdatasetapproximatelycontainedthesameproportionofPVCbeats.Subsequently,foreachrecording(30min)inDS1,thefirst5minrecordingswereusedtoconstructthepersonalizedECGtemplateandthelast25minrecordingswereusedfortheR-wavepeaksdetectionandPVCrecognition,wherethetemplatematchingmethodwereused.ThevalidityoftheproposedmethodswastestedusingDS2.Theresultsshowedthat:1)highbeatdetectionaccuracywasachievedforbothPVCbeatsandnon-PVCbeats;2)thesensitivityandspecificityofPVCrecognitionwere99.11%and99.96%forthefirst5minrecordingsrespectively,99.17%and99.43%forthelast25minrecordingsrespectively.Alltheproposedmethodscanbereal-timeperformed,whichshowapromisingprospectfortheapplicationofECGmobilephones.

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简介：Earlyrepolarizationisawell-described,commonelectrocardiographicvariant.Itwasinitiallyfelttobebenign,butinthelasttwentyyearsasuggestedalinkbetweenspecifictypesofearlyrepolarizationandsuddencardiacdeathhasemerged.ThisassociationwashasbeentermedtheJwavesyndromeandincludesboththehighriskearlyrepolarizationandBrugadaECGpatterns.Theoddsofearlyrepolarizationchangebeingassociatedwithpooroutcomesarestillexceedinglysmall.Nevertheless,theassociationofafairlyubiquitousECGfindingwithfatalornearfatalclinicaloutcomeshasraisedconcern.Howcanweidentifythetrulyhigh-riskpatients?IfapatienthasasignificantclinicaleventwithaconcerningECGrepolarizationpattern,whatshouldbedonenext?TheauthorsofthisreviewpresentcurrentinformationregardingtheEarlyRepolarizationandBrugadaSyndromesandhowtoproceedwithdiagnosis,management,andriskstratificationwhenearlyrepolarizationchangeisobservedonECG.

简介：ＡＵＴＯＭＡＴＩＣＣＬＡＳＳＩＦＩＣＡＴＩＯＮＯＦＥＣＧＵＳＩＮＧＡＲＴＩＦＩＣＩＡＬＮＥＵＲＡＬＮＥＴＷＯＲＫＳＡＵＴＯＭＡＴＩＣＣＬＡＳＳＩＦＩＣＡＴＩＯＮＯＦＥＣＧＵＳＩＮＧＡＲＴＩＦＩＣＩＡＬＮＥＵＲＡＬＮＥＴＷＯＲＫＳＣ．Ｌ．Ｐｅｎｇ，Ｚ．...

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简介：Recentinterestinmobile-basedhealthcarehasdrivensignificantdemandsonresearchingnon-contactelectrodesforelectrocardiogram(ECG)measurement.Whiletheconductivegelachievestherequirementinmakingagoodcontactbetweentheelectrodesandskin,severalproblemsappear.Agel-free,non-contactelectrodebasedoncapacitivecouplingtheorywasprovidedinthispaper,whichwasintegratedontheprintcircuitboard(PCB).TheexperimentalresultsshowedthatclearECGsignalscouldbeacquiredinthelaboratoryconditionsbycouplingtheelectrodestothechestofpatientsthroughcottonbelts.

简介：胎儿的ECG抽取为胎儿的监视有重要意义。这份报纸介绍基于适应线性神经网络提取胎儿的ECG的一个方法。方法能被认识到bytraining数据的小数量。另外，更好的结果能被改进神经网络结构完成。因此，更容易鉴别胎儿的ECG能被提取。试验性的结果证明适应线性神经网络能被用来有效地从母亲的腹的信号提取胎儿的ECG。而且，更清楚的胎儿的ECG能被改进神经网络结构提取。

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简介：SignificanceofECGChangesinAcuteMyocardialInfarctionSTsegmentelevationisconsideredbymostasasignofanoccludedcoronaryarteryandmyocardialischemia.CoronaryarteryocclusionusuallyisthecauseoftheacuteinfarctioninthepatientwiththattypeofECG.PatientswithacutemyocardialinfarctionwhodonotshowSTsegmentelevationyetleaktroponin,stillhaveamyocardialinfarction.

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简介：这份报纸基于嵌入的网server.The系统描述一个新ECG监视电视的方法和系统的开发与网络接口和嵌入的网服务器，由ECG录音机组成因特网网络和计算机，与操作浏览器/服务者(B/S)的系统，mode.TheECG录音机被ARM9(S3C2410X)设计并且嵌入操作系统(Linux).OnceECG录音机被连接了到因特网网络，医药专家能使用因特网存取ECG的服务器

简介：ECGisanimportanttoolfortheprimarydiagnosisofheartdiseases,whichshowstheelectrophysiologyoftheheart.Inourmethod,asinglematernalabdominalECGsignalistakenasaninputsignalandthematernalP-QRS-Tcomplexesoforiginalsignalisaveragedandrepeatedandtakenasareferencesignal.LMSandRLSadaptivefiltersalgorithmsareapplied.TheresultsshowedthatthefetalECGshavebeensuccessfullydetected.TheaccuracyofDaisydatabasewasupto84%ofLMSand88%ofRLSwhilePhysioNetwasupto98%and96%forLMSandRLSrespectively.

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简介：ECG-6511是医院常见的便携式单导心电图机，具有抗干扰性能好，操作方便、蓄电池容量大等优点。如果电源、充电电路出现故障，蓄电池能量不足，就失去便携功能。对该机出现的电源、充电故障现象、电路原理进行了论述。

简介：Objective:Therandomizedcontrolledtrial(ClinicalTrials.govidentifierNCT02990741)willinvestigatewhethermorefrequentelectrocardiographic(ECG)recordingsandanalyseswithanautomatedECGsystemwouldimprovedetectionofatrialfibrillationcomparedwithasingleannualECGscreeninelderlyChineseincommunityhealthcenters.Design:Menandwomen(≥65years)willberandomizedintointensive(n=3500)andusual(n=3500)screeninggroups,andwithintheintensivescreeninggroupintointensivescreening(n=2625)andmoreintensivescreening(n=875)subgroups.ECGrecordingswillbeperformedwithanautomatedECGanalysissystem(AliveCorheartmonitor)at1yearintheusualscreeninggroup,at3,6,9,and12monthsintheintensivescreeningsubgroup,andat1,2,3,and4weeksand3,6,9,and12monthsinthemoreintensivescreeningsubgroup.Theprimaryoutcomeisthedetectionrateofatrialfibrillationbetweentheusualscreeninggroupandtheintensivescreeninggroup.Samplesizeestimationwasbasedonaprojecteddetectionrateofatrialfibrillationof2.0%byasingleECGrecordingat12months,animprovementof50%withmorefrequentECGrecordings,α=0.05,powerof80%,andaone-sidedtest.Conclusions:ThetrialwillprovideevidenceontheclinicaleffectivenessofmorefrequentECGrecordingsbyahandheldautomatedanalysissysteminthedetectionofatrialfibrillation.

简介：ObjectivesPhenotypicoverlapofBrugadasyndromewithtype3longQTsyndromeisobservedinsomecarriersofmutationsintheNachannelSCN5A.Concomitant-Brugadasyndromeand3typelongQTsyndromeassociatedwithsodiumchannelmutationwasreportedbefore,however,nodatashowedconcomitant-BrugadatypeandshortQTintervalelectrocardiogram(ECG)andrevealedtheassociated-genemutation.MethodsThedirectDNAsequencewasconducedtofindthemutation.Themutationwasreproducedinvitrousingsite-directedmutagenesisandcharacterizedusingthepatchclamptechniqueinthewhole-cellconfiguration.ResultsThepatientwiththefamilyhistoryofsuddendeathshowedBrugadaandshortQTintervalECG.SequenceofSCN5Aidentifiedamissensemutation,R689H,previouslyassociatedwithalongQTsyndrome.BiophysicalstudyshowedthattheR689Hfailedtogenerateanycurrentwhenheterolo-gouslyexpressedinHEKcells.ConclusionsOurfindingsindicateforthefirsttimethatcoexisted-BrugadatypeandshortQTintervalECGlinkedtothelossoffunctioninSCN5Amutation.

简介：摘要目的评价数字心电图机ECG-1230S的自动测量和诊断功能及临床应用价值。方法入选受试者100例，分别用惠州科美思医用仪器有限公司的数字心电图机ECG-1230S和武汉中旗的数字式多道心电图机iMAC120对受试者进行对照试验，对比分析4个心电测量参数和诊断结果。结果数字心电图机ECG-1230S和武汉中旗心电图机所测量的4个心电参数的数据无明显差异，一致性较好，心电诊断符合率达90%。结论数字心电图机的ECG-1230S的性能与武汉中旗产品基本等效，值得应用于临床推广。