颅外段椎动脉扭曲程度对椎—基底动脉供血影响的临床分析

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1、中文摘要与弧形扭曲的远端相比PSV、EDV、TMV明显降低，Ⅵ、Iu增大。4颅外段椎动脉的复杂扭曲后扭曲远端的椎动脉血流与弧形扭曲的远端相比PSV、EDV、TMV明显降低，VI、砒增大。虽然成角扭曲和复杂扭曲远端的D与弧形型扭曲对比无显著性统计学差异，但PSV、EDV、TMV的下降和VI的增大使椎动脉的流速减低，造成了远端椎一基底动脉的血流灌注能力下降。RJ增大表明有成角扭曲与复杂扭曲现象椎动脉远端血管阻力增大，供血能力下降。所以颅外段椎动脉成角扭曲和复杂扭曲对椎动脉供血功能的影响大于弧形扭曲。关

2、键词：颅外段椎动脉；扭曲；程度；血流动力学参数；血流灌注英文摘要EffectsofthetortuosityofextracranialvertebralarteryinvaryingdegreeonvertebrobasilararterysufficiencyABSTRACTobjective：Thetortuosityofextracranialvertebralartery(VA)isanalterationofthemorphology．Ithasbeenregardedasafacto

3、rwhichinfluencethefunctionofVAbloodsupplyinmoststudiesofthemedicalimages．Thisresearch，usingcolorDopplerflowimage(CDFI)，pulswaveDoppler(PW)，colorpowerangiography(CPA)，istoinspecttheextracranialVAwithtortuosityphenomenon．Thehemodynamicparameterswhichder

4、ivedfromboththeproximalendandthedistalendwererecordedandwerecomparedinordertoanalyzethecharacteristicsofthehemodynamicparameterschangescausedbythevaryingtortuositydegreeoftheextracranialVA，andassesstheinfluencecausedbythevaryingtortuositydegreeontheVA

5、bloodsupplysystem．Methods：Inthisstudy,atotalofI12vertebralarteriesin558patients(4vertebralarterieswereocclusion)withvertebrobasilartransientischemicattack(VBTIA、wereexaminedbyCDFI，PWandCPA，and123patients(175vertebralarteries，include52patientswithboths

6、idestortuosity)werefoundtohaveextracraniaIVAtortuosities．inwhich65patientsweremale，58patientswerefemaleandthe6英文摘要meanagewas64．1+10．3years．AllpatientsmeettheVBTIAcriteriaestablishedbyTheUSACerebralApoplexyCommittee．Theenrollmentcriteriawere：(1)dyskine

7、sia，onetofourlimbsincapability,accuracyactiondyskinesiaorparalysis(2)sensorydisturbance，thesensesthatcomefromfourlimbsandbothsiadesoffaceorperipheryaroundmouthectsubsidenceorabnormity(3)visualdisturbance，bothsideofvisualfieldtotallyorpartiallydefect(4

8、)ataxia，disequilibriumwithoutvertigo(5)vertigo(mayaccompanywithnauseaandemesis)，diplopia，dysphagiaoranarthria．Patientswithanysymptomsamongthefirsttothefourthitems，andpatientswithsymptomsinthefifthitemcompaniedwithanyoneinthefirsttothirditemswo