Helicobacter Pylori Rescue Treatment in Patients Allergic to Penicillin

Study Overview
=================
Brief Summary
-----------------
The purpose of this study is to assess and compare the effectiveness of furazolidone-tetracycline-containing and metronidazole-tetracycline-containing quadruple regimens for the rescue treatment of Helicobacter pylori infection inpatients allergic to penicillin.

Detailed Description
-----------------
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.However,Helicobacter pylori eradication is a challenge in patients allergic to penicillin. Therefore, the investigators aim to assess and compare the effectiveness of furazolidone-tetracycline-containing and metronidazole-tetracycline-containing quadruple regimens for the rescue treatment of Helicobacter pylori infection in patients allergic to penicillin.

Official Title
-----------------
Helicobacter Pylori Rescue Treatment Containing Tetracycline in Patients Allergic to Penicillin:a Prospective Randomized Controlled Study

Conditions
-----------------
Helicobacter Pylori Infection

Intervention / Treatment
-----------------
* Drug: Furazolidone
* Drug: Metronidazole


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Patients aged 18-70 with H. pylori infection. Patients with previous Helicobacter pylori eradication. Patients Allergic to Penicillin. Exclusion Criteria: Patients treated with H2-receptor antagonist, PPI, bismuth and antibiotics in the previous 4 weeks. Patients with gastrectomy, acute GI bleeding and advanced gastric cancer. Patients with known or suspected allergy to study medications. Currently pregnant or lactating. Inability to provide informed consent and other situations that could interfere with the examination or therapeutic protocol.

Ages Eligible for Study
-----------------
Minimum Age: 18 Years
Maximum Age: 70 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: furazolidone-tetracycline-containing quadruple<br>patients in furazolidone-tetracycline-containing quadruple group will receive vonoprazan fumarate 20mg po bid, tetracycline 500mg po qid , bismuth potassium citrate(Lizhudele) 220mg po bid, and furazolidone 100mg po bid for 14d | Drug: Furazolidone<br>* Furazolidone-tetracycline-containing quadruple regimens<br>|
| Active Comparator: metronidazole-tetracycline-containing quadruple group<br>patients in metronidazole-tetracycline-containing quadruple group will receive vonoprazan fumarate 20mg po bid,tetracycline 500mg po qid , bismuth potassium citrate(Lizhudele) 220mg po bid, and metronidazole 400mg po qid for 14d. | Drug: Metronidazole<br>* metronidazole-tetracycline-containing quadruple regimens<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Eradication rates in 2 groups | Both intention to treat(ITT) and per-protocol(PP) analyses will be used for the assessment of the eradication rates of Helicobacter pylori infections in two groups. | 12 months | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Helicobacter pylori, Eradication, Allergic, Penicillin, Tetracycline