The purpose of this study was to evaluate the effect of Helicobacter pylori infection on the quality of gastric mucosa preparation.

The purpose of this study was to evaluate the effect of Helicobacter pylori infection on the quality of gastric mucosa preparation by comparing the cleanliness of gastric mucosa between patients with Helicobacter pylori infection and those without Helicobacter pylori infection.

Inclusion Criteria:

• Adults who volunteered to participate in this study and signed an informed consent form
• Have been tested for Helicobacter pylori and have definite test results

Exclusion Criteria:

• Contraindications for gastroscopy (such as severe cardiopulmonary diseases, liver and kidney dysfunction, shock, etc.)
• History of upper gastrointestinal surgery
• Therapeutic endoscopy and emergency surgery are required
• Recent history of upper gastrointestinal bleeding
• Corrosive substance ingestion
• The pregnancy
• Abnormal mental state cannot cooperate with the examination
• Patients with contraindications to the drugs used in the study.

All outpatients or inpatients requiring general gastroscopy