胎儿主动脉弓异常超声诊断方法探究

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1、胎儿主动脉弓异常超声诊断方法探究［摘要］目的研究胎儿主动脉弓异常的产前超声声像图，探讨胎儿主动脉弓异常的畸形特征。方法以2014年1月〜2016年3月我院行产前系统超声检查诊断为主动脉弓异常的胎儿55例作为研究对象进行回顾性分析，分析其产前超声图像特征及结局。结果（1）55例先天性主动脉弓异常胎儿中，右位主动脉弓及主动脉弓分支异常27例，主动脉弓缩窄19例，主动脉弓离断7例，双主动脉弓2例,结果获得验证的病例为47例，准确率为85.40%,其中13例合并其他严重心脏畸形，6例染色体异常，14例合并心外畸形。（2）主动脉弓缩窄及主动脉弓离断的超声声像线索为三血

2、管-气管切面、主动脉弓长纵轴切面及经气管冠状切面均显示主动脉弓内径异常小，与动脉导管内径比例失调；右位主动脉弓及其分支异常线索为主动脉弓位于气管右侧、与动脉导管之间距离增大呈“U”形，和（或）在气管后方有发自降主动脉起始段的血管分支。结论先天性主动脉弓异常的各个类型均有特征性的超声声像，其最有效的扫查切面是三血管切面和三血管气管切面，产前超声诊断准确率较高，主动脉弓异常可能合并其他严重心内外畸形及染色体异常，预后不良［关键词］胎儿；主动脉弓；超声；产前诊断［中图分类号］R714.5［文献标识码］A［文章编号］2095-0616(2017)05-111-03［

3、Abstract］ObjectiveToexploretheprenataiultrasonographicdiagnosisoffetalaorticarchanomalies,andtoexploreabnormalfeaturesoffetalaorticarchanomalies・Methods55casesoffetuswithaorticarchanomalydiagnosedbyprenataisystematicultrasonographyinourhospitalfromJanuary2014toMarch2016wereselected

4、asthestudyobjects,andtheywereretrospectivelyanalyzed.Characteristicsandoutcomeofprenatalultrasoundimageswereanalyzed・ResuIts(1)Inthe55casesofcongenitalaorticarchanomalies,therightaorticarchandaorticarchbranchwereabnormalin27cases,coarctationoftheaorticarchwere19cases,aorticarchinte

5、rruptionwere7cases,anddoubleaorticarchwere2cases・Asaresult,47caseswereconfirmed,theaccuracyratewas85.40%.Amongthem,13caseswerecomplicatedwithotherseverecardiacmalformations,includingchromosomeabnormalityintheother6cases,andintheother14cases.(2)Ultrasonographiccluesofcoarctationofth

6、eaortaandaorticarchwasthreevesselsandtrachea.view,aorticarchlongaxissectionandtranstrachealcoronalsectionshowedaorticarchanomaliesofsmalldiameterandproportionaltothediameteroftheductusarteriosus・Therightaorticarchanditsbrancheswerethe"U”shapeoftheaorticarchlocatedontherightsideofth

7、etrachea,andthedistancebetweentheaorticarchandtheduetusarteriosus.ConclusionCongenitalaorticarchanomaliesofvarioustypeshavecharacteristicultrasound・Themosteffectivescanningsectionisthethreevesselsectionandthethreevesselsection.Theaccuracyrateofultrasounddiagnosisishigh.Anomaliesofa

8、orticarchmaybeassociatedwi