MortalityPostoperative ComplicationsHospital MortalityRetrospective StudiesTreatment OutcomeFollow-Up StudiesAortic Aneurysm, AbdominalSurvival RateSurgical Procedures, OperativeTime FactorsAortic RuptureCardiovascular Surgical ProceduresVascular Surgical ProceduresCoronary Artery BypassInfant MortalityCause of DeathSurvival AnalysisReoperationCardiac Surgical ProceduresLength of StayRisk AssessmentProspective StudiesHeart Valve Prosthesis ImplantationPancreatectomyHepatectomyRisk FactorsAortic AneurysmThoracic SurgeryPneumonectomySurgical Procedures, ElectiveAge FactorsGastrectomyEndarterectomyVirginiaHeart Valve DiseasesAortic ValveMethodsThoracic Surgical ProceduresHeart Valve ProsthesisSurgery Department, HospitalEmergenciesBlood Vessel Prosthesis ImplantationAdenoma, Bile DuctEsophagectomyCohort StudiesPrognosisAnastomosis, SurgicalColectomyMorbidityAorta, AbdominalChi-Square DistributionBlood Vessel ProsthesisIntraoperative ComplicationsProportional Hazards ModelsUnited StatesChild MortalityOperative TimeLogistic ModelsBlood Loss, SurgicalMitral ValveSplenorenal Shunt, SurgicalPreoperative CareMaternal MortalityMultivariate AnalysisAmpulla of VaterAortic DiseasesCholecystectomySternumKaplan-Meier EstimateIncidenceActuarial AnalysisPancreaticoduodenectomyLife TablesSeverity of Illness IndexPortasystemic Shunt, SurgicalVascular PatencySex FactorsSuture TechniquesAortic Aneurysm, ThoracicPelvic ExenterationEsophageal and Gastric VaricesAortic Valve StenosisHypertension, PortalLiver NeoplasmsRegistriesPatient SelectionComorbidityGastrointestinal HemorrhagePostoperative CareRiskAneurysm, DissectingBile Duct NeoplasmsThoracotomyOutcome Assessment (Health Care)Coronary DiseaseRecurrenceMegacolon, ToxicCommon Bile Duct NeoplasmsDrainageMitral Valve Insufficiency