Lower ExtremityIschemiaPopliteal ArteryLegAmputationLimb SalvageFemoral ArteryArterial Occlusive DiseasesIntermittent ClaudicationAneurysmArteriosclerosis ObliteransVascular Surgical ProceduresEmbolectomyVascular PatencyRespiratory Tract InfectionsPeripheral Vascular DiseasesAngioplasty, BalloonArteriesTibial ArteriesConstriction, PathologicAcute DiseaseTreatment OutcomeFoot UlcerAngiographyBlood Vessel Prosthesis ImplantationMyocardial IschemiaBrain IschemiaTime FactorsAngioplastyRetrospective StudiesUltrasonography, Doppler, DuplexAlloysBlood Vessel ProsthesisExtremitiesPeripheral Arterial DiseasePopliteal CystProspective StudiesIliac ArteryHindlimbLower Gastrointestinal TractFollow-Up StudiesPolytetrafluoroethyleneSaphenous VeinDiabetic AngiopathiesAngiography, Digital SubtractionPostoperative ComplicationsRisk FactorsVascular GraftingPulmonary ArteryFootVeinsRisk AssessmentReoperationRegional Blood FlowStentsBrachial ArteryLimb BudsReperfusion InjuryGraft Occlusion, VascularCerebral ArteriesEndovascular ProceduresCarotid ArteriesChronic DiseaseAneurysm, FalseThrombectomyCritical IllnessRenal ArteryMagnetic Resonance AngiographyMesenteric ArteriesBocavirusRespiratory Syncytial Virus InfectionsPopliteal VeinBlue Toe SyndromeFasciaBronchiolitisAneurysm, RupturedBasilar ArteryLife TablesOsteochondromaGastrointestinal HemorrhageGangreneUltrasonography, DopplerNeovascularization, PhysiologicRespiratory Syncytial Virus, HumanThromboangiitis ObliteransCompartment SyndromesKnee DislocationUltrasonography, Doppler, ColorTomography, X-Ray ComputedSubclavian ArteryThrombosisParamyxoviridae InfectionsToesNasopharynxBlood Gas Monitoring, TranscutaneousProsthesis DesignLeg InjuriesEmbolismCoronary Artery BypassAnkle Brachial Index