Prevalence and Resistance Pattern of Pseudomonas aeruginosa Isolated from Surface Water

Pseudomonas aeruginosa is one of the most common pathogenic bacteria, frequently found in dif-ferent environmental samples. The prevalence of multidrug resistant isolates has become an alarming concern for both patients and their surroundings. The present study was carried out to record prevalence of P. aeruginosa in surface water of Dhaka city and to screen their antibiotic re-sistance pattern. The study was also extended to typing of resistant isolates according to extended spectrum beta lactamase production. Hereby, Kirby-Bauer method was applied to test antibiotic sensitivity according to Clinical and Laboratory Standards Institute. Then, the Ampicillin resistant isolates were screened for ESBL production by Double Disk Synergy Test (DDST). In these pros-pects, 52 water samples were tested, of which 32 were found positive for P. aeruginosa isolates. Hundred percent of the positive isolates were found to Ampicillin (AMP) resistant followed by 93.7 % to both Tetracycline and Gentamycin and 71.8 % to Co-triimoxazole. P. aeruginosa is com-pletely susceptible to third generation antibiotics ciprofloxacin, Imipenem and Aztreonam followe