Antimicrobial Susceptibility Testing Guided Antibiotic Selection Strategies in Salvage Helicobacter Pylori Treatment

Efficacy of Two Antimicrobial Susceptibility Testing Guided Antibiotic Selection Strategies in Salvage Helicobacter Pylori Treatment

Helicobacter pylori (H. pylori), which infects about 50% of the global population, has been recognized as a main risk factor of multiple gastric pathologies, especially non-cardiac gastric cancer. Strongly evidence supports that H. pylori eradication is an effective approach to reduce the incidence of those pathologies.

Inclusion Criteria:

• Consecutive patients who are 18-70 years old with persistent H. pylori infection after first or second line treatment attempts.

Exclusion Criteria:

• Enable to undergo upper endoscopy;
• Patients with gastrectomy, acute GI bleeding and advanced gastric cancer;
• Known or suspected allergy to study medications;
• Taking bismuth and antibiotics in the previous four weeks, or taking proton pump inhibitor and H2-receptor blockers in the previous two weeks;
• Currently pregnant or lactating
• Inability to provide informed consent and other situations that could interfere with the examination or therapeutic protocol.