en عمومى General گزارش مورد case report Aim: The present study was aimed to investigate frequency of bla per gene in hospital isolates of P. aeruginosa. Methods: The number of 100 isolates of P. aeruginosa were isolated from in burn Hospital in Tehran during a 1-year study in 2013-2014.The identification were carried out by colonial morphology, pigment formation, positive Oxidase test, growth test at 42ºC on Nutrient agar, OF, Arginine dehyrolase and Motility tests. Results: The results indicated that 15% of burned hospital isolates contain bla pe gene. This study indicated that zone diameter mean of growth inhibition ≤ 14 mm to ceftazidime.The rate of MIC to ceftazidime was 20 μg/ml. Conclusion: According to results of current research we hope in future be used drugs to the clinic with a wider range as a complementary therapy and also for burned infections. Pseudomonas aeruginosa, Multidrug-Resistant, , blaper , PCR. 262 265 http://intjmi.com/browse.php?a_code=A-10-1-90&slc_lang=en&sid=1 Fateme Moradi 10031947532846002475 10031947532846002475 No 1Applied Microbiology Research center, and Microbiology Department, Baqiyatallah University Medical of Sciences, Iran Abbas. Ali. Imani. fooladi 10031947532846002476 10031947532846002476 No 1Applied Microbiology Research center, and Microbiology Department, Baqiyatallah University Medical of Sciences, Iran Davoud Esmaeili 10031947532846002477 10031947532846002477 Yes 1Applied Microbiology Research center, and Microbiology Department, Baqiyatallah University Medical of Sciences, Iran