Antibiogram and Multidrug Resistance Patterns of Staphylococcus Aureus (MDRSA) associated with Post Operative Wound Infections in Basrah – Iraq

Fifty-two clinical samples collected from patients with postoperative wound infections in various age groups were examined for presence of multidrug-resistant bacterial pathogens – in especially – Staphylococcus aureus. The majority of samples were for age between 31 and 40 yrs (32.69%) followed by other age groups, while the lowest samples were taken from age group 1 to 10 yrs (5.76%) P<0.05. A total of 131 isolates were identified and the main causative agent was S. aureus (24 isolates 18.32%), while other bacterial types isolated from postoperative wounds were as follow: Escherichia coli 16 (12.21%), Klebsiella spp 11(8.39%), Enterobacter cloaeca 8 (6.1%), Proteus spp 7(5.34%), Pseudomonas aeruginosa 20 (15.26%), Staphylococcusepidermidis 11 (8.39%), Staphylococcus saprophyticus 8 (6.1%), Staphylococcus xylosus 5 (3.81%), Viridance streptococci 10 (7.63%), Streptococcus pyogenes 7 (5.34%), and Enterococcus faecalis 4 (3.05%) P<0.01. Sixteen antibiotics were used to test the resistance of S. aureus. Penicillin G gave 100% resistance ratio for all of 24 tested isolates, while the highly affected antibiotic was cefotaxime that gave the lowest resistance percentage (16.66%). Other antibiotics had ranges of resistance between these limits P<0.01. S. aureus developed a resistance mode for at least eight antibiotics. The biggest percentage of resistance was for the resistance of four antibiotics (21.18%) P<0.01.