Postoperative ComplicationsBulgariaRetrospective StudiesStrokeTreatment OutcomeLength of StayPneumoniaOrthopedic ProceduresRisk FactorsProspective StudiesUrinary Tract InfectionsFollow-Up StudiesInpatientsPregnancyRegistriesSpinal Cord InjuriesSeverity of Illness IndexTime FactorsRisk AssessmentFeverInfant, NewbornPatient DischargeHospital MortalityIncidenceOutcome Assessment (Health Care)Multivariate AnalysisPainHospitalizationBrain IschemiaAge FactorsPrognosisCohort StudiesIntraoperative ComplicationsUnited StatesLogistic ModelsChinaDiabetes ComplicationsPregnancy ComplicationsReoperationObstetric Labor ComplicationsLaparoscopySurgical Wound InfectionTomography, X-Ray ComputedEquipment FailureHemorrhageDevice RemovalDrainageForeign-Body MigrationSurgical Wound DehiscencePostoperative HemorrhageCatheters, IndwellingHematomaStentsAnastomosis, SurgicalCatheterizationBiliary Tract DiseasesDiabetic AngiopathiesIatrogenic DiseaseEndoscopyPostoperative CareSuture TechniquesSurgical Procedures, Minimally InvasiveRecurrenceThrombosisFistulaLiver TransplantationEmbolization, TherapeuticFatal OutcomeReconstructive Surgical ProceduresCatheterization, Central VenousAcute DiseasePregnancy Complications, CardiovascularSurgical FlapsAnticoagulantsEquipment DesignProsthesis DesignPreoperative CareDigestive System Surgical ProceduresRadiography, InterventionalIntestinal PerforationBlood Loss, SurgicalAneurysm, FalseChi-Square DistributionCatheterization, PeripheralVascular Surgical ProceduresProsthesis ImplantationDiabetes Mellitus, Type 1Blood Vessel Prosthesis ImplantationFeasibility StudiesSurvival RateForeign BodiesDiabetes Mellitus, Type 2Intestinal FistulaThromboembolismProsthesis FailureSurgical InstrumentsFracture Fixation, InternalVascular DiseasesHemostatic TechniquesSurgical Procedures, Elective