Spinal Cord IschemiaSpinal CordParaplegiaSpinal Cord InjuriesIschemiaAortic Aneurysm, ThoracicParaparesisCerebrospinal Fluid PressureConstrictionReperfusion InjuryAorta, ThoracicReperfusionBlood Vessel Prosthesis ImplantationAortographyRabbitsInjections, SpinalSubclavian ArteryInfarctionSpinal Cord DiseasesParaparesis, SpasticMonitoring, IntraoperativeEvoked Potentials, SomatosensoryMyocardial IschemiaBrain IschemiaThoracic ArteriesAortic Aneurysm, AbdominalSpinal Cord CompressionTime FactorsSpinal Cord NeoplasmsDrainageMotor NeuronsEvoked Potentials, MotorIschemic PreconditioningAorta, AbdominalDisease Models, AnimalAortic DiseasesNeuroprotective AgentsEndovascular ProceduresNeurologic ExaminationHindlimbHypothermia, InducedBlood Vessel ProsthesisCerebrospinal FluidPostoperative ComplicationsRats, Sprague-DawleyVascular Surgical ProceduresAortic AneurysmRegional Blood FlowThoracotomyTreatment OutcomeRandom AllocationSpinal Nerve RootsAngioplastyAneurysm, DissectingSpinal NervesTomography, X-Ray ComputedIntraoperative ComplicationsEmbolismNeuronsIliac ArteryStentsSpinal Cord RegenerationMalondialdehydeIn Situ Nick-End LabelingAortic RuptureAnastomosis, SurgicalSpinal CanalSpinal NeoplasmsCervical VertebraeAnesthesia, SpinalQuadriplegiaProsthesis DesignImmunohistochemistryRetrospective StudiesThoracic VertebraeRecovery of FunctionSpinal DiseasesUmbilical CordPosterior Horn CellsLaminectomyLumbosacral Region