Pethidine dose and female sex as risk factors for nausea after esophagogastroduodenoscopy.

Nausea and vomiting after esophagogastroduodenoscopy have not been studied in detail. The aim of this study was to evaluate the risk factors for post-endoscopic nausea. We performed a case-control study at the Toyoshima Endoscopy Clinic.

Early detection of gastric cancer after Helicobacter pylori eradication due to endoscopic surveillance.

Background: Helicobacter pylori eradication therapy is commonly performed to reduce the incidence of gastric cancer. However, gastric cancer is occasionally discovered even after successful eradication therapy. Therefore, we examined the prognosis of gastric cancer patients, diagnosed after successful H.

infection in subjects negative for high titer serum antibody.

Aim: To investigate the clinicopathological features of the patients testing negative for high titer serum anti- () antibody.

Methods: The antibody titers were measured using antigens derived from Japanese individuals. C-urea breath test-positive individuals were defined as having infection.