Clinical trial NCT01829074: Predictive Value of Subjective and Objective Measurement Tools for Extraesophageal Reflux
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Laryngopharyngeal Reflux
Keywords: Laryngopharyngeal Reflux
Hoarseness
Throat Clearing
Globus Sensation
Lead sponsor: Respiratory Technology Corporation
Sponsor class: INDUSTRY
First posted: 2013-04-11
Enrollment: 150
Sex: ALL
Minimum age (years): 18
Maximum age (years): 75
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Patients presenting to the Otolaryngology practices of the co-investigators with certain symptoms consistent with Laryngopharyngeal reflux: hoarseness, globus sensation, and/or recurrent throat clearing for more than 3 months

Brief summary: Acid reflux can cause many symptoms in the throat, including discomfort or pain, and difficulty with breathing and voice problems. Doctors have different ways of diagnosing and treating the reflux that causes these symptoms, and they are trying to better understand what the best ways are to treat the patients with these symptoms.

Usually, a doctor will prescribe medication for reflux based on the symptoms a patient complains of. Sometimes it works and the patient gets better, sometimes it does not work and the patient's condition does not improve. The doctor will also use findings from an examination with an endoscope in the patient's throat to see if there is any damage that might have been caused by reflux. One new device that doctors use to help them diagnose reflux has a sensor on the end of a tube that goes through the nose and rests in the throat. This sensor measures the acid reflux for 24 hours, showing the doctor when acid reflux occurs.

The study doctors are performing this research study to help them understand more about acid reflux disease, and the best ways to diagnose and treat their patients who have acid reflux.

The study involves procedures, medications and devices that are already used regularly in doctors' offices and hospitals. The experimental part of this research is blinding the study doctor to the results of the pH study until the end of a three month course of antireflux medication, and performing a second pH study to measure change in acid exposure.

Hypothesis: The Restech pH study helps identify patients who will respond positively to acid inhibitory therapy, and patients whose study normalizes will have better Symptomatic response rates than those whose pH levels fail to normalize.


Eligibility criteria: Inclusion Criteria:

* Presenting to the ENT clinic for distressing symptoms of hoarseness, laryngitis, and/or recurrent throat clearing for at least 3 months duration. Determined not to be caused by another factor, such as allergies or poor vocal hygiene.
* Laryngoscopic examination performed on day of enrollment
* Indications present for a 24 hour oropharyngeal pH study (Restech)
* Indication to begin a 3 month course of antireflux therapy (Figure 1) based on symptom presentation and widely accepted otolaryngologic findings
* Willing to return to clinic in 3 months for follow up pH study
* Willing to participate in weekly phone calls with the study investigator to discuss compliance with medication and lifestyle modifications.

Exclusion Criteria:

* Expected non-compliance with the equipment and/or instructions (according the protocol) given by the investigator.
* Any subjects with significant medical conditions that, in the investigator's judgment, would compromise the subject's health and safety.
* Subjects who have undergone previous antireflux surgery
* Subjects treated for reflux, either with Proton Pump Inhibitors (PPI's) or H2RAs in the past 4 weeks
* Subjects previously treated for reflux, either with antireflux medication or surgery
* Subjects with alternative work schedules affecting nighttime sleep periods (i.e. nighttime shift employees)
* Subjects with conditions that contraindicate use of PPIs, as listed on product labeling.
* Women who are pregnant, or nursing.

Primary outcomes:
measure: Symptomatic Improvement (treatment result) in the group of patients who are "LPR negative" (normal pH study) at baseline versus the symptomatic improvement of the patients who are "LPR positive" (abnormal pH study) at baseline.
timeFrame: 12/2013 (up to 8 months)
Secondary outcomes:
Other outcomes:
Locations:
Study officials:
affiliation: University of Wisconsin, Madison, USA
name: Nimish Vakil, MD
role: PRINCIPAL_INVESTIGATOR
References: