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Abstract
Lower respiratory tract infections (LTRIs) in critical care are major infectious diseases worldwide with lethal complications. This study was undertaken to see the bacterial profile and their incidence rate in lower respiratory tract specimens along with their antibiotic susceptibility pattern in critical care. The study consisted of total 210 specimens from the patient suspected for LRTIs. Bacterial identification and their antibiotic susceptibility pattern were identified by automated system, Vitek2 Compact. A total of 157 bacteria were isolated from 137 positive cases, among which Gram-negative bacteria (93.6%) were more frequent, which include Klebsiella pneumoniae (47.63%) as more predominant followed by Pseudomonas aeruginosa (23.21%) and Acinetobacter baumannii(19%). Other Gram-negative bacteria were least frequent as Escherichia coli (7.49%) followed by Proteus mirabilis (2.04%) and Morganella morganii (0.69%).