Investigation of Carbapenem-Resistant AcinetobacterBaumannii Resistance Rate in Clinical Specimens of Newborns at Imam Khomeini Hospital in Tehran
Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Background
Carbapenem-resistant Acinetobacter Baumannii (CRAB) hospital infection poses a serious threat to the health of the newborns in neonatal intensive care units (NICU). The present study was conducted to evaluate the prevalence and resistance of hospital infections in the NICU ward at Imam Khomeini hospital in Tehran.
Materials and Methods
The blaOXA-51 like gene was investigated with polymerase chain reaction (PCR). Then, sensitivity of isolates to different antibiotics was assessed using disc diffusion method and broth micro dilutions to determine the minimum inhibitory concentrations (MICs). Pulsed field gel electrophoresis (PFGE) was used for typing of randomly collected CRAB infection at different wards of this hospital.
Results
A total of 10 CRAB infections were isolatedduringthe6-month study period, and it was found that 100% of them were positive forblaOXA-51-like gene in PCR assay. All isolates were resistant to all tested antibiotics, except colistin, polymyxin B, and tigecycline. CRAB isolates had a high MIC values for imipenem, cefotaxim, and amikacin, showing multidrug resistant (MDR) phenotype. According to PFGE analysis,3palsotypes including clone A (7%), clone B (2%), and clone D (1%) were seen in the 10 CRAB isolates. Clone A was a dominant clone and spread in different wards of the hospital, especially in other ICUs and the emergency ward. Moreover, the similarity between the palsotypes showed the ability of transferring CRAB infection from different wards of the hospital to the NICU.
Conclusions
Based on the results of this study, CRAB infection, with a high resistance rate, has the ability to enter into important wards such as NICU, and thus it is highly important to control the presence of these isolates in different parts of the hospital.
Language:
English
Published:
Archives of Medical Laboratory Sciences, Volume:3 Issue: 3, Summer 2017
Pages:
1 to 7
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