ThienamycinsImipenemCilastatinCarbapenemsAnti-Bacterial AgentsMicrobial Sensitivity TestsDrug Resistance, BacterialDrug Resistance, Microbialbeta-LactamasesPseudomonas aeruginosaCeftazidimeDrug ResistanceDrug Resistance, Multiple, BacterialAcinetobacter baumanniiAcinetobacter InfectionsGram-Negative BacteriaDrug Resistance, MultipleKlebsiella pneumoniaeDrug Resistance, NeoplasmGram-Negative Bacterial InfectionsPiperacillinCephalosporinsAcinetobacterPseudomonas InfectionsEnterobacteriaceaebeta-Lactam Resistancebeta-LactamsBacterial ProteinsDisease ResistanceBacteria, AnaerobicAmikacinPenicillanic AcidSulbactamKlebsiella InfectionsGram-Positive BacteriaVascular ResistanceBacteroides fragilisLactamsIntraabdominal InfectionsEnterobacteriaceae InfectionsAnti-Infective AgentsDrug Resistance, ViralDipeptidasesCross Infection