Spinal Cord IschemiaSpinal CordSpinal Cord InjuriesParaplegiaIschemiaAortic Aneurysm, ThoracicSpinal Cord CompressionParaparesisCerebrospinal Fluid PressureInjections, SpinalConstrictionReperfusion InjurySpinal Cord DiseasesAorta, ThoracicMotor NeuronsSpinal Cord NeoplasmsReperfusionQuadriplegiaBlood Vessel Prosthesis ImplantationTime FactorsEpidural SpaceAortographyRabbitsInfarctionSubclavian ArteryCordotomyEvoked Potentials, SomatosensoryThoracic VertebraeMonitoring, IntraoperativeSpinal DiseasesParaparesis, SpasticHindlimbMyocardial IschemiaBrain IschemiaThoracic ArteriesSpinal InjuriesLaminectomyAcute DiseaseAortic Aneurysm, AbdominalRats, Sprague-DawleyEvoked Potentials, MotorDrainageDisease Models, AnimalSpinal NervesCervical VertebraeIschemic PreconditioningSpinal Nerve RootsBones of Lower ExtremityAorta, AbdominalNeuroprotective AgentsAortic DiseasesNeurologic ExaminationEndovascular ProceduresRecovery of FunctionAnesthesia, SpinalHypothermia, InducedCerebrospinal FluidBlood Vessel ProsthesisSpinal CanalPostoperative ComplicationsReflexTreatment OutcomeSpinal NeoplasmsThrombophlebitisVascular Surgical ProceduresAortic AneurysmRegional Blood FlowCatsDecerebrate StateSpinal StenosisSpinal Cord RegenerationLipomatosisNeuronsThoracotomySpinal FusionRandom AllocationMethylprednisoloneTomography, X-Ray ComputedMagnetic Resonance ImagingAngioplastyIntraoperative ComplicationsAneurysm, DissectingEmbolismElectric StimulationGanglia, SpinalPosterior Horn CellsIliac ArteryStentsIn Situ Nick-End LabelingMuscular Atrophy, SpinalMalondialdehydeLumbosacral RegionAortic RuptureImmunohistochemistryAnastomosis, SurgicalRetrospective StudiesAxonsProsthesis DesignNerve RegenerationLocomotion