Spinal Cord IschemiaSpinal CordSpinal Cord InjuriesParaplegiaThoracic VertebraeIschemiaIntercostal NervesParaparesisSpinal Cord NeoplasmsAortic Aneurysm, ThoracicThoraxSpinal Cord DiseasesSpinal Cord CompressionLaminectomyMotor NeuronsCerebrospinal Fluid PressureConstrictionReperfusion InjuryAorta, ThoracicHindlimbNeuronal Tract-TracersLumbosacral RegionSplanchnic NervesSpinal Nerve RootsRecovery of FunctionReperfusionBlood Vessel Prosthesis ImplantationAortographyRats, Sprague-DawleyRabbitsTime FactorsInjections, SpinalSubclavian ArteryAutonomic Fibers, PreganglionicInfarctionIntercostal MusclesDisease Models, AnimalParaparesis, SpasticMonitoring, IntraoperativeEvoked Potentials, SomatosensoryMyocardial IschemiaHerniaBrain IschemiaAxonsMyelographyThoracic ArteriesNerve RegenerationAortic Aneurysm, AbdominalNeuronsCatsUrinary Bladder, NeurogenicCervical VertebraeDrainageSpinal NervesEvoked Potentials, MotorIschemic PreconditioningAorta, AbdominalAortic DiseasesElectric StimulationNeuroprotective AgentsEpidural NeoplasmsEndovascular ProceduresNeurologic ExaminationMagnetic Resonance ImagingHypothermia, InducedBlood Vessel ProsthesisCerebrospinal FluidPostoperative ComplicationsSpinal CanalGanglia, SympatheticVascular Surgical ProceduresRespiratory MusclesSpinal NeoplasmsAortic AneurysmImmunohistochemistryTreatment OutcomeTomography, X-Ray ComputedMedulla OblongataAutonomic DysreflexiaRegional Blood FlowNeural ConductionThoracotomyRandom AllocationAction PotentialsAngioplastyEpidural SpaceSympathetic Nervous SystemNeural PathwaysAneurysm, DissectingAfferent PathwaysIntraoperative ComplicationsEmbolismDecompression, SurgicalIliac ArteryTuberculosis, SpinalStentsSpinal Cord RegenerationMalondialdehydeIn Situ Nick-End LabelingAortic Rupture