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The Effect of PPI Therapy on the Result of Helicobacter Pylori Diagnostic Tests

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified January 2011 by Rabin Medical Center.
Recruitment status was:  Not yet recruiting
Information provided by:
Rabin Medical Center Identifier:
First received: January 16, 2011
Last updated: January 18, 2011
Last verified: January 2011


The study will include 30 patients ages 18-80y that had a gastroscopy for various reasons. The patients should not be on PPI therapy . If during the gastroscopy there are some pathologies that require a second look endoscopy after some weeks of therapy (ulcers or esophagitis), the investigators will repeat the gastroscopy within a month.

During the first gastroscopy a biopsy will be taken for histological examination and for a rapid urease test and an urea breath test will be done soon after the procedure.

If one of the tests is positive the investigators postulate that the Helicobacter pylori is actually present.

After the gastroscopy the patient is given a full dose of PPI (as indicated) and helicobacter tests are repeated in the next endoscopy (under PPI therapy) . Any positive test that become negative in the second endoscopy is considered false negative.

Helicobacter Pylori

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective

Further study details as provided by Rabin Medical Center:

Primary Outcome Measures:
  • Effect of PPI treatment on helicobacter pylori diagnostic tests [ Time Frame: 1 month of therapy ]

Estimated Enrollment: 30
Study Start Date: February 2011
Estimated Primary Completion Date: February 2012 (Final data collection date for primary outcome measure)
Cohort of consecutive patients undergoing EGD treated with PPI
Patients positive for helicobacter pylori undergoing EGD, started on PPI therapy for a month, repeated diagnostic tests for Helicobacter pylori after a month of therapy (urease test, histology and breath test)


Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Cohort of helicobacter pylori positive patients undergoing EGD for different indications and not treated with PPI

Inclusion Criteria:

  • Cohort of helicobacter pylori positive patients undergoing EGD for different indications and not treated with PPI-

Exclusion Criteria:

  • Patients younger than 18 years and older than 80 years
  • Severe background diseases
  • Previous eradicated helicobacter pylori infection
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01278901

Contact: Vered Shabat, MD 972-3-9732798 ext 2798

Department of Gastroenterology, Rabin Medical Center Not yet recruiting
Petach Tikva, Israel, 49100
Contact: Vered Shabat, MD    972-3-9732798 ext 2798   
Sponsors and Collaborators
Rabin Medical Center
  More Information

Responsible Party: Vered Shabat, MD, RMC Identifier: NCT01278901     History of Changes
Other Study ID Numbers: 20100300
Study First Received: January 16, 2011
Last Updated: January 18, 2011

Keywords provided by Rabin Medical Center:
helicobacter pylori
urease test
the focus of the study is to evaluate a possible effect of PPI therapy on Helicobacter pylori diagnostic tests processed this record on September 19, 2017