肺静脉血流频谱改变对胎儿心脏异常的诊断价值

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1、英文摘要DIAGNoSTICVALUEoFPULMONARYVEINSBLOODFLOWⅥ，AVEFORMSINFETALCARDIACDEFORMITYABSTRACTAdultpulmonaryveinbloodflowwaveformscanbeusedtoestimateleftventriculardiastolicfunction．Fetalcirculatingsystemisdifferentfromadults’．Fetallunghasnorespiratoryfunctionandisincollapsedstate，whichprovidebloodflowspec

2、trumofpulmonaryveinoffetallungwithfavorableacousticwindow．Thebloodflowspectrumofpulmonaryveincouldbeobtainedeasilyandpulmonaryveinhasnovalveandconnectsleftatriumdirectly,therefore，pulmonaryvenousflowismainlyinfluencedbyleftarterialpressure．Fetalpulmonaryveinbloodflowspectrumwillgetchangedwhenfetal

3、cardiacstructureorfunctionisabnormal．Basedonthestatisticsdata，thehighincidenceofcongenitalheartdiseasesisabout7％0--8％0inneonates．80％ofdeadbabieshavecardiacdeformityandonethirdofthemhaveseriouscardiacdeformity．Theresearchistoanalyzethevalueofpulmonaryveinsbloodflowspectrumindiagnosingfetalcardiacde

4、fect．208fetuseswererecruitedfromthesewhocametoourhospitalforpregnancyexamination．Thesefetuseswerebetween22and38weeks．Theyweredividedinto2groups：thenormalgroupincludes146fetuseswithnormalheart，theabnormalgroupincludes62fetuseswithabnormalheart(8fetuseswitharrhythmiaand54fetuseswithabnormalstructure

5、ofheart)．TheE8UltrasonoscopewithRAB一4—8一DVolumeofconvexarrayprobe(1．91～7．77MHz)，4C—Dconvexarrayprobe(1．5-4．6MHz)，M6CPlanearrayprobe(2．6-7．77MHz)wereusedtoexaminefetalheart．Echocardiographicexaminationconditionwasusedandthepicturewasadjustedtothebestcondition．Thepregnantwomenwerelyinghorizontallyor

6、ontheside．Firstly,examinethefetalstructureandestimategestationalweeks．Accordingtofetalheadandspine，wecandecidethepositionofthe3英文摘要baby．Then，fetalechocardiographicevaluatethestructureandfunctionexaminationconditionwasusedtoofthefetalheartcomprehensively．Theseviewswereusedsuchasthefetalabdomenhoriz

7、ontalview,fourchamberview,leftandrightoutflowtractview,threebloodvesseltracheaview,shortaxisviewsofleftventricles，shortaxessectionoflargearteries，aorticarchandductusarteriosusarchview,superiorandinferiorvenacaval