Abdominal AbscessAbdomenPenicillanic AcidPiperacillinIntraabdominal InfectionsLactamsAppendicitisPeritonitisBacterial InfectionsAbdominal CavityAbdominal NeoplasmsBacteroides InfectionsRadiography, AbdominalPneumoperitoneum, ArtificialLaparoscopyAbscessTissue AdhesionsAbdominal InjuriesBacteroides fragilisLaparotomyCryptorchidismPortographySalmonella paratyphi CAscitesPressureTomography, X-Ray ComputedPneumoperitoneumAdipose TissueIntra-Abdominal FatPostoperative ComplicationsOmentumAbdominal WallDigestive System Surgical ProceduresPeritoneal NeoplasmsWounds, NonpenetratingBody CompositionVisceraDrainageCholecystitisAbdominal PainBody ConstitutionRetrospective StudiesTreatment OutcomePeritoneumSurgical Wound Infectionbeta-LactamsBlood Gas AnalysisProspective StudiesPoint-of-Care SystemsBlood Loss, SurgicalAnesthesia, InhalationSepsisObesityAbsorptiometry, Photon