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Abstract
Introduction: Pseudomonas aeruginosa is one of the most prevalent nosocomial pathogens that cause a life-threatening infection. One of the important characteristics of P. aeruginosa is biofilm formation and the most studied bacterium related to biofilm formation so far. The biofilm formation and beta-lactamases production synergistically contribute to the extensive dissemination of multi-drug resistant strains. Aim: The present study was conducted to identify, biofilm-producing isolates of P. aeruginosa along with their antibiotic resistance pattern and ESBL and MBL production and to analyze their antibiogram. Materials and methods: Various clinical specimens were collected and totally 82 clinical isolates of P. aeruginosa were included in this study. Biofilm producing isolates were identified by the tube adherence method. Results: Among the total, 22 [26.83%] isolates were biofilm producers and the maximum number was obtained from blood [100%], followed by ETT [75%], and Drain [66.67%]. Biofilm producing isolates were showing more resistance in comparison to non-biofilm producers. All isolates of P. aeruginosa were sensitive to colistin and polymyxin B. Association of ESBL production and biofilm formation found to be statistically significant [p < 0.002], which was a contrast to association of MBL production and biofilm formation. Conclusion: High-level resistance to antimicrobial agents is a characteristic feature of infection caused by biofilm and lead to chronic infections. Knowledge about these biofilm-producing isolates is important in the clinical setting to eradicate these chronic and life-threating infections.
Highlights
Pseudomonas aeruginosa is one of the most prevalent nosocomial pathogens that cause a life-threatening infection
As per the CDC statement, the P. aeruginosa infection rate was near about 0.4% in the US hospitals and 4th common nosocomial pathogen accounts for 10.1% of all hospital-acquired infections [17]
The present study showed, 26.3% isolates of P. aeruginosa were biofilm producers and showed that there is an association between biofilm formation and drug resistance
Summary
Pseudomonas aeruginosa is one of the most prevalent nosocomial pathogens that cause a life-threatening infection. One of the important characteristics of P. aeruginosa is biofilm formation and the most studied bacterium related to biofilm formation so far. Aim: The present study was conducted to identify, biofilm-producing isolates of P. aeruginosa along with their antibiotic resistance pattern and ESBL and MBL production and to analyze their antibiogram. Biofilm producing isolates were identified by the tube adherence method. Conclusion: High-level resistance to antimicrobial agents is a characteristic feature of infection caused by biofilm and lead to chronic infections. Knowledge about these biofilm-producing isolates is important in the clinical setting to eradicate these chronic and life-threating infections. Tening and hard to treat causing levated stay in a medical institution or even accelerated morbidity and mortality as it exhibits intrinsically excessive resistance to many antimicrobials and the development of multidrug resistance in health care settings [2].
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