angioplastyandstent冠脉血管成形术及支架 ppt课件

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1、MyExtraPresentation符杉CoronaryAngioplastyandStent冠脉血管成形术和支架1Angioplasty2Stent3Vedio01AngioplastyAngioplastyAngioplastyandrelatedtechniquesareknownaspercutaneouscoronaryintervention(PCI).Angioplastyisaprocedureinwhichanarrowedsectionofthecoronaryarteryiswi

2、dened.Angioplastyislessinvasiveandhasashorterrecoverytimethanbypasssurgery,whichisalsodonetoincreasebloodflowtotheheartmusclebutrequiresopen-chestsurgery.Mostofthetimestentsareplacedduringangioplasty.PCI经皮冠状动脉介入术Angioplasty血管成形术BypassSurgery搭桥手术Stent支架An

3、angioplastyisdoneusingathin,softtubecalledacatheter.Adoctorinsertsthecatheterintoabloodvesselinthegroinorwrist.Thedoctorcarefullyguidesthecatheterthroughbloodvesselsuntilitreachesthenarrowedorblockedportionofthecoronaryartery.Step1Catheter导管Groin腹股沟12Hea

4、rtCatheter导管FemoralArtery股动脉Step2Aguidewireandballoonareplacedinthecoronaryartery.Afterthecatheterreachestheartery,yourdoctorwillmovetheguidewirefartherintothenarrowedorblockedportion.Asmallballoonisslidalongtheguidewire.Inmostcases,asmall,expandablesten

5、tisplacedinthearterywiththeballoon.CoronaryArtery冠状动脉Catheter导管Stent支架guidewire导丝123guidewire导丝Theballoonisinsidethestent.Step3Thesmallballoonisinflated.Theballoonmaystayinflatedforashorttime.Thepressurefromtheinflatedballoonpressestheplaqueagainstthewal

6、loftheartery,creatingmoreroomforbloodtoflow.Theinflatedballoonalsoexpandsthestent.Plaque斑块Stent支架Step4Next,theballoonisdeflated.Butthestentstaysexpanded.Thestentpressesagainstthewallsofthearteryandkeepsthearteryopen.Yourdoctorremovestheballoon,guidewire,

7、andcatheter.Thestentremainsinthebloodvessel,allowingthebloodtoflownormallyagain.Afteranangioplasty,thenarrowedorblockedarteryisopenedupandoxygen-andnutrient-richbloodflowsmorenormallyintotheheartmuscle.1243Yourdoctorwatchesthemovementofthecatheterinthebl

8、oodvesselsonanX-rayscreenthroughcoronaryangiography,whichisdonefirsttofindwherethearteryisnarrowedorblocked.TheseX-raysarefromanangiogram.AnangiogramisatestthatusesaspecialdyeandcameratotakeX-raypicturesofthebloodflowinana