Bariatric SurgeryAnastomosis, SurgicalObesity, MorbidAnastomosis, Roux-en-YGastric BypassPostgastrectomy SyndromesArteriovenous AnastomosisGastroplastyJejunostomyBile RefluxWeight LossSurgical StaplersPostoperative ComplicationsBariatric MedicineGastrectomyJejunumPancreaticojejunostomyBiliopancreatic DiversionSuture TechniquesAnastomotic LeakMyoelectric Complex, MigratingSurgical StaplingStomachGastroparesisTreatment OutcomeProctocolectomy, RestorativeLaparoscopyGastric EmptyingColonic PouchesPancreaticoduodenectomyObesitySuturesJejunoileal BypassBariatricsTime FactorsAvitaminosisRectumPreoperative PeriodHyperoxaluriaIleostomyColectomyPolytetrafluoroethylenePostoperative PeriodPouchitisAnal CanalBody Mass IndexHeart Bypass, RightFramycetinColonReoperationDigestive System Surgical ProceduresFollow-Up StudiesGastric FistulaIleumArteriovenous Shunt, SurgicalColostomyConstriction, PathologicPostoperative CareBlood Vessel ProsthesisMicrosurgeryColonic DiseasesEsophagostomyRetrospective StudiesProspective StudiesVascular PatencyY ChromosomeReceptors, Purinergic P2Y1Tooth WearOperative TimeInternal Mammary-Coronary Artery AnastomosisCerebral RevascularizationEsophagectomyInformed Consent By MinorsEsophagusPortacaval Shunt, SurgicalCholedochostomyWound HealingSurgical InstrumentsTemporal ArteriesDiabetes Mellitus, Type 2Malabsorption SyndromesVeinsGraft Occlusion, VascularFemoral ArteryGastric BalloonPreoperative CareBlood Vessel Prosthesis ImplantationIntestinal ObstructionPatient SelectionColitis, UlcerativePerioperative PeriodGlucagon-Like Peptide 1Reconstructive Surgical ProceduresAnti-Obesity AgentsHepatic Duct, CommonGastrointestinal HormonesPeptide YYBronchial ArteriesVascular Surgical ProceduresRisk Factors