ImipenemThienamycinsAnti-Bacterial AgentsCilastatinMicrobial Sensitivity Testsbeta-LactamasesAcinetobacter baumanniiCarbapenemsAcinetobacter InfectionsPseudomonas aeruginosaDrug Resistance, BacterialGram-Negative BacteriaAntimicrobial Cationic Peptidesbeta-Lactam ResistanceAnti-Infective AgentsDipeptidasesbeta-LactamsLactamsKlebsiella pneumoniaeCeftazidimeDrug Resistance, Multiple, BacterialAcinetobacterGram-Positive BacteriaGram-Negative Bacterial InfectionsEnterobacteriaceaeKlebsiella InfectionsDrug Resistance, MicrobialPseudomonas InfectionsPiperacillinCephalosporinsBacterial InfectionsBacteria, AnaerobicBacterial ProteinsBacteriaPenicillanic AcidEnterobacteriaceae InfectionsCross InfectionDisk Diffusion Antimicrobial TestsBacteremiaAmikacinBacteroides fragilisPorinsSulbactamEnterobacter cloacaeEscherichia coliPenicillin-Binding ProteinsColistinPeptidyl TransferasesMuramoylpentapeptide CarboxypeptidasePectobacterium carotovorumStaphylococcus aureusBacteria, AerobicMinocyclineHexosyltransferasesIntraabdominal InfectionsPenicillinsElectrophoresis, Gel, Pulsed-FieldGram-Positive Bacterial InfectionsCiprofloxacinColony Count, MicrobialDrug Therapy, CombinationHospitalsCefotaximeDNA, BacterialCephalosporinaseBacterial Outer Membrane ProteinsPneumonia, BacterialCeftriaxoneMonobactamsIntensive Care UnitsTobramycinHospitals, UniversityMolecular Sequence DataSerratia marcescensFluoroquinolonesVancomycinCathelicidinsPlasmidsAmpicillinbeta-DefensinsCyclopropanesEscherichia coli InfectionsClavulanic AcidDrug Resistance, MultiplePolymerase Chain ReactionGentamicinsHydrolysisDefensinsMethicillin ResistanceMolecular TypingSerratiaIsoelectric FocusingDrug CombinationsSequence Analysis, DNADrug StabilityCulture MediaDNA FingerprintingDrug UtilizationSerratia InfectionsDrug Synergism