Penicillanic AcidPiperacillinCephalosporinsHuman ExperimentationThighAnti-Bacterial AgentsPseudomonas InfectionsMicrobial Sensitivity TestsClavulanic Acidbeta-LactamasesEnterobacteriaceaePseudomonas aeruginosaSulbactamClavulanic Acidsbeta-LactamsPenicillinsEnterobacter cloacaeDrug Therapy, CombinationGram-Negative BacteriaCeftazidimeTicarcillinCephalosporinasebeta-Lactam ResistanceKlebsiella pneumoniaeLuxembourgBacterial InfectionsCitrobacter freundiiKlebsiella InfectionsEnzyme InhibitorsCarbapenemsImipenemMannansGram-Negative Bacterial InfectionsDrug Resistance, Multiple, BacterialChemotherapy-Induced Febrile NeutropeniaThienamycinsBacteriaCross InfectionAbdominal AbscessBlisterBacteroides fragilisMonobactamsKlebsiellaDrug Resistance, BacterialEscherichia coliCefoxitinIsoelectric FocusingEscherichia coli InfectionsPremedicationLactamsAcinetobacterCephalosporin ResistanceDrug CombinationsBacteria, AnaerobicAnti-Infective AgentsFalse Positive ReactionsCeftriaxoneEnterobacteriaceae InfectionsGram-Positive BacteriaAcinetobacter baumanniiDrug Resistance, MicrobialRectumCiprofloxacinExudates and TransudatesInfusions, IntravenousTobramycinPenicillinasePeritonitisLegionellaPneumonia, BacterialHalf-LifeWound InfectionDrug SynergismAspergillosisHospitalsArea Under CurveIntensive Care UnitsMetabolic Clearance RateAbdomen