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Iranian Journal of Microbiology، جلد ۵، شماره ۴، صفحات ۳۲۳-۳۲۷
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عنوان انگلیسی Multidrug resistant Gram-negative bacilli in lower respiratory tract infections.
چکیده انگلیسی مقاله Background: Lower respiratory tract infections are among important causes of morbidity and mortality for all age groups. The emergence of multidrug resistant Gram-negative bacilli is an issue of increasing concern. Materials and Methods: A retrospective study including respiratory specimens (sputum and BAL) was conducted in our tertiary care centre. Samples were processed for microscopy, culture and susceptibility testing following standard methods. Multidrug resistant Gram-negative bacilli causing lower respiratory tract infections were studied for their causation of disease. The effect of appropriate treatment on clinical outcome was observed. Results: A total of 472 Gram-negative pathogens were isolated from sputum and broncho-alveolar lavage fluid specimens during the study period. Among these Gram-negative pathogens 175 (37%) were found to be multidrug resistant. Klebsiella pneumoniae 85 (48.6%) and Acinetobacter spp. 59 (33.7%) were the predominant multidrug resistant Gram-negative bacilli isolated. Based on clinico-microbiological correlation, 138 (78.9%) multidrug resistant isolates were found to be pathogenic and the rest 37 (21.1%) were considered as colonizers. After initiating appropriate antibiotic therapy, clinical improvement was seen in 110 (79.7%) patients. In the patients who showed improvement, amikacin (34.3%) and cefoperazone-sulbactum (21.8%) were found to be the most effective drugs. Conclusion: A large majority of the isolated multidrug resistant Gram-negative bacilli were found to be pathogenic. Regular surveillance which directs appropriate empirical therapy; and good clinic-microbiological workup of each case of lower respiratory tract infection can reduce the morbidity and mortality associated with multidrug resistant organisms.
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نویسندگان مقاله shashidhar vishwanath | shashidhar vishwanath
department of microbiology, kasturba medical college, manipal university, manipal. india.


kiran chawla | kiran chawla
department of microbiology, kasturba medical college, manipal university, manipal. india.


anusha gopinathan | anusha gopinathan
department of microbiology, kasturba medical college, manipal university, manipal. india.
نشانی اینترنتی http://ijm.tums.ac.ir/index.php/ijm/article/view/517
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