Antibiotic Resistance Pattern of A Biofilm Forming Bacteria, Isolated From Implanted Catheters
Antibiotic Resistance Pattern of A Biofilm Forming Bacteria, Isolated From Implanted Catheters
Keywords:
Biofilm, Catheters, Tissue culture plate method, Multidrug resistant organismsAbstract
Background & Objectives: Medical devices have become an essential part of modern health care system, but use of such devices have led to the adhesion of microorganisms on their surface and leading to the formation of biofilm. These biofilm act as a nidus for infection leading to device related infections. Microorganisms associated with biofilm formation are tolerant and resistant to antibiotics and host immune response, which increases the difficulties for the clinical treatment of biofilm infection. This study was done to know the prevalence of bacterial biofilm formation on the retrieved implants and the antibiotic resistance pattern among these biofilm forming isolates. Method: A total 148 retrieved catheter tips were subjected for culture. All the isolates were identified by standard biochemical reaction and antibiotic susceptibility testing was done as per CLSI guidelines. Detection of biofilm is done by using tissue culture plate method. Results: A total of 50 isolates are recovered from 148 catheter tips. Among these, 24(48%) were biofilm producers. S. aureus and S.epidermidis showed strong biofilm formation. A high antibiotic resistance pattern was seen among the biofilm producers when compared to non- biofilm producers. Conclusion: Bacterial biofilms are an important virulence factor associated with chronic nosocomial infection. Detection of biofilm forming organisms can help in appropriate antibiotic choice. Significant correlation between biofilm production and multidrug resistance was observed in our study. [Suraj S NJIRM 2017; 8(6):55-59]
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