Abstract
Antimicrobial resistance is one of the main obstacles for an effective eradication of H. pylori infection. To determine the susceptibility of H. pylori strains obtained from gastric biopsies to metronidazole, clarithromycin and amoxicillin. Susceptibility to metronidazole, clarithromycin and amoxicillin was determined using E-test in 46 isolates of H. pylori obtained from gastric biopsies of 54 adult patients. Thirty three percent of isolates were resistant to metronidazole and 2% were resistant to clarithromycin and amoxicillin. One isolate was resistant to metronidazole and clarithromycin. The antimicrobial susceptibility of these strains of H. pylori obtained from Paraguayan patients, may help to decide the initial therapy to eradicate this infection.
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