Intraoperative CareIntraoperative PeriodSpinal CordMonitoring, IntraoperativeHeartSpinal Cord InjuriesIntraoperative ComplicationsHeart RateInjections, SpinalAnesthesia, SpinalHeart FailureSpinal Cord DiseasesSpinal NervesSpinal Cord NeoplasmsSpinal Nerve RootsSpinal DiseasesSpinal CanalHeart DiseasesSpinal Cord CompressionSpinal NeoplasmsHeart Defects, CongenitalSpinal FusionHeart TransplantationTreatment OutcomePostoperative ComplicationsSpinal StenosisFrozen SectionsNeuronavigationTime FactorsRetrospective StudiesFetal HeartBlood Loss, SurgicalProspective StudiesSurgery, Computer-AssistedSpinal InjuriesIntraoperative AwarenessNeurosurgical ProceduresMuscular Atrophy, SpinalHeart ValvesHeart AtriaThoracic VertebraeSpinal Cord IschemiaLaminectomySpineGanglia, SpinalFollow-Up StudiesHeart Arrest, InducedAnesthesia, GeneralRats, Sprague-DawleyCervical VertebraeParaplegiaLumbar VertebraeMotor NeuronsHemodynamicsHeart BlockMagnetic Resonance ImagingPreoperative CareSpinal CurvaturesTuberculosis, SpinalIntraoperative Neurophysiological MonitoringMyocardiumRisk FactorsTomography, X-Ray ComputedHematoma, Epidural, SpinalPosterior Horn CellsDisease Models, AnimalRecovery of FunctionParathyroidectomyLaparoscopySpinal FracturesHeart Function TestsLumbosacral RegionAnesthesiaMyocardial IschemiaPostoperative CareScoliosisReoperationPostoperative PeriodEchocardiography, TransesophagealSpinal Muscular Atrophies of ChildhoodMyocardial ContractionSurgical Procedures, Minimally InvasiveCardiac Surgical ProceduresDecompression, SurgicalEvoked Potentials, SomatosensoryPredictive Value of TestsPain MeasurementCardiopulmonary BypassNeurosurgeryElectric StimulationSensitivity and SpecificityCoronary DiseaseSpinal Cord RegenerationPainBlood Transfusion, AutologousMyocytes, CardiacSurgical Procedures, OperativeReproducibility of ResultsCardiac Output, LowEchocardiography