Spinal Cord IschemiaSpinal CordParaplegiaSpinal Cord InjuriesIschemiaHippocampusAortic Aneurysm, ThoracicParaparesisCerebrospinal Fluid PressureConstrictionReperfusion InjuryAorta, ThoracicReperfusionBlood Vessel Prosthesis ImplantationAortographyRabbitsInjections, SpinalSubclavian ArteryInfarctionSpinal Cord DiseasesBrain IschemiaParaparesis, SpasticEvoked Potentials, SomatosensoryMonitoring, IntraoperativeMyocardial IschemiaTime FactorsThoracic ArteriesAortic Aneurysm, AbdominalSpinal Cord CompressionSpinal Cord NeoplasmsDisease Models, AnimalDrainageMotor NeuronsRats, Sprague-DawleyEvoked Potentials, MotorIschemic PreconditioningNeuroprotective AgentsAorta, AbdominalAortic DiseasesNeurologic ExaminationEndovascular ProceduresHindlimbHypothermia, InducedNeuronsBlood Vessel ProsthesisCerebrospinal FluidPostoperative ComplicationsVascular Surgical ProceduresAortic AneurysmRegional Blood FlowRandom AllocationTreatment OutcomeThoracotomySpinal Nerve RootsAngioplastyAneurysm, DissectingTomography, X-Ray ComputedSpinal NervesIntraoperative ComplicationsEmbolismImmunohistochemistryBrainIn Situ Nick-End LabelingIliac ArteryStentsMalondialdehydeRats, WistarSpinal Cord RegenerationAortic RuptureAnastomosis, SurgicalSpinal CanalSpinal NeoplasmsCervical VertebraeAnesthesia, SpinalQuadriplegiaProsthesis DesignRetrospective StudiesThoracic VertebraeRecovery of FunctionSpinal DiseasesUmbilical CordAxonsMagnetic Resonance ImagingPosterior Horn CellsLaminectomyApoptosisLumbosacral RegionNerve Regeneration