ABSTRACT
Objective To investigate the distribution and drug resistance of pathogens in elderly patients with gastric cancer complicated with diabetes mellitus.Methods 367 elderly patients with gastric cancer and diabetes mellitus were selected from the hospital from March 2010 to March 2017.The samples were isolated and cultured.The Gram positive bacteria were tested by GN201,the Gram negative bacteria susceptibility test was carried out by GP,and the drug susceptibility test was carried out by disk diffusion method.Results There were 68 cases of postoperative infection in gastric cancer patients with diabetes mellitus,and 79 strains were isolated and cultured.Among the gram negative bacteria,Escherichia coli,Klebsiella pneumoniae and Pseudomonas aeruginosa were the main pathogens.Among the Gram positive bacteria,Staphylococcus aureus and Staphylococcus epidermidis were the main pathogens.The main Gram negative bacteria,Escherichia coli to ceftazidime with levofloxacin resistance rates were 93.33% and 80.00%;Klebsiella pneumoniae had a higher drug resistance rate for cefoperazone and ciprofloxacin,76.92% and 69.23% respectively;a relatively high rate of Pseudomonas aeruginosa resistant to levofloxacin was 80.00%.Among the gram positive bacteria,the re-sistance rates of Staphylococcus aureus to penicillin and erythromycin were relatively high,respectively 91. 67% and 83.33%.Staphylococcus epidermidis had relatively high resistance rates to penicillin and erythromy-cin,100.00% and 77.78% respectively.Conclusion Gastric cancer complicated by diabetes mellitus elderly patients with postoperative infection of pathogenic bacteria distribution is given priority to with Gram-negative bacteria was the most common in,Pseudomonas aeruginosa,the main pathogenic bacteria of Escherichia coli to ceftazidime with levofloxacin resistant rate of Klebsiella pneumoniae was higher on cefoperazone and ciproflox-acin resistant Pseudomonas aeruginosa,the resistance rate of Pseudomonas aeruginosa to levofloxacin is high, and it is important to apply antibiotics rationally according to drug sensitivity test.