@Article{, title={Effect Biofilm Formation in Pseudomonas aeruginosa Resistance To Antibiotic}, author={Hanan Hameed Shatti and Wisam M Al-Saeed and Mohammed I. Nader}, journal={Mustansiriya Medical Journal مجلة المستنصرية الطبية}, volume={21}, number={1}, pages={13-17}, year={2022}, abstract={Objective: Due Pseudomonas aeruginosa is the most common type of bacteria that causes hospital-acquired infections because it has multiple resistance mechanisms to antibiotics such as biofilm formation. It is important to understand to investigate biofilm production in multidrug resistant clinical isolates of P. aeruginosa from different sites of infection. Materials and Methods: This work was done on 114 patients were collected from different specimens From hospitals Baghdad. The collected samples were cultured on different media (blood agar, MacConkey agar, nutrient agar, and Cetrimide agar) for isolation of P. aeruginosa bacteria as well as isolates from all patient were tested for antimicrobial susceptibility using disk diffusion method ,in vitro formation of biofilm in microtiter plates containing Muller –Hinton broth. Results: Forty specimens (35.1%) were observed to have bacterial growth (positive samples) for P. aeruginos, the results of P. aeruginosa isolates were tested for antibiotic susceptibility showed that among forty positive results, the most isolates were potentially resistant to different antibiotics presented that the isolates resistant to piperacillin (34, 85%), gentamicin (26, 65%), tobramycin (30, 82.5%), amikacin (27, 67.5%), cefepime (25, 62.5%), meropenem (31, 77.5%), carbenicillin (31, 77.5%), ceftriaxone (30, 75%), ciprofloxacin (27, 67.5%), imipenem (22, 55%), ceftazidime 26 (65%), and norfloxacin 24 (60%). The results showed the ability of P. aeruginosa isolates to produce biofilm were 40 (100%) has the ability to produce biofilm, these were the result divided in to strong 19 (47.5%), moderate 12 (30%), and weak 9 (22.5%). Conclusion: There were 40 isolates biofilm producers in divers levels of biofilm strength.

} }