The Effect of High PCO2 Solution on Esophageal Acid Sensation

NCT ID: NCT01128608

Last Updated: 2010-07-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-09-30

Study Completion Date

2010-11-30

Brief Summary

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To determine the effect of intraesophageal high PCO2 solution as compared to acidic and saline solutions on subjects' heartburn sensation using stiumlus-response functions.

Detailed Description

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Presently, the exact mechanism of GERD and the role of CO2 in pathogenesis of heartburn symptoms is unclear. CO2 conversion to protons may play a key role in the mechanism for heartburn sensation. This is a prospective, randomized study that will help further explore the mechanism for heartburn sensation in GERD patients and can be a prelude for further studies examining the role of new class antireflux agents such as carbonic anhydrase inhibitors in the treatment of patients with heartburn.

Conditions

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Gastroesophageal Reflux Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

SINGLE

Participants

Study Groups

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Control Group - Healthy Subjects

Healthy volunteers with normal EGD.

Group Type ACTIVE_COMPARATOR

PCO2 Acid Perfusion and 0.1N HCI Perfusion

Intervention Type PROCEDURE

A small tube will be inserted through the nostril and into the esophagus. A mild CO2 solution or a mild saline solution will be administered for aprox. 10 minutes during which you will be asked questions regarding any symptoms you may experience.

NERD Group

Subjects with NERD. Heartburn symp x2 wk for 3 months. Normal EGD and abnormal 24 hour pH.

Group Type ACTIVE_COMPARATOR

24-Hr Esohpageal pH Monitoring

Intervention Type PROCEDURE

There will be a 24-hr pH monitoring procedure and two 10-minute infusions each one week apart consisting of high PCO2 solution and 0.1 N HCI solution.

Interventions

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24-Hr Esohpageal pH Monitoring

There will be a 24-hr pH monitoring procedure and two 10-minute infusions each one week apart consisting of high PCO2 solution and 0.1 N HCI solution.

Intervention Type PROCEDURE

PCO2 Acid Perfusion and 0.1N HCI Perfusion

A small tube will be inserted through the nostril and into the esophagus. A mild CO2 solution or a mild saline solution will be administered for aprox. 10 minutes during which you will be asked questions regarding any symptoms you may experience.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

10 Healthy Controls

* Normal EGD, Normal 24-hr pH
* 18-80 Years of age
* Able to read, understand and complete study questionnaires and diary
* Able to understand study procedures and sign informed consent
* Albe to comply with all study requirements

10 NERD (Non-Erosive Reflux Disease)
* 18-80 Years of age
* Willing to stop PPI/H2 Blocker prior to EGD
* Have heartburn symptoms 2+ times per week for at least 3 months.

Exclusion Criteria

* Esophageal erosions, Barretts, or peptic stricture on EGD
* Previous esophageal, gastric or duodenal surgery
* underlying co-morbidities
* Diabetes mellitus (requires insulin), scleroderms, or neuromuscular disorder
* Upper airway symptoms
* Tricyclic antidepressants, antispasmodics, selective serotonin receptor inhibitors, thiazides, bile acid-binding agents or prokinetics
* Patients who cannot or are unwilling to sign ICF
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Southern Arizona VA Health Care System

FED

Sponsor Role lead

Responsible Party

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Southern Arizona VA Health Care System

Principal Investigators

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Ronnie Fass, MD

Role: PRINCIPAL_INVESTIGATOR

Southern Arizona Veterans Health Care System

Locations

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Southern Arizona VA Health Care System

Tucson, Arizona, United States

Site Status RECRUITING

Southern Arizona Veterans Health Care System

Tucson, Arizona, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Marcia Willis, CCRC

Role: CONTACT

520-792-1450 ext. 2032

Facility Contacts

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Ronnie Fass, M.D.

Role: primary

520-792-1450 ext. 5139

Marcia Willis, CCRC

Role: backup

792.1450 ext. 2032

Ronnie Fass, MD

Role: primary

520-792-1450 ext. 5139

Marcia Willis, CCRC

Role: backup

520-792-1450 ext. 2032

Other Identifiers

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The Effect of PCO2 Solution

Identifier Type: -

Identifier Source: org_study_id

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