- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04468542
Randomized Placebo-controlled Analysis of Superior Laryngeal Nerve Block for Neurogenic Cough
Study Overview
Status
Conditions
Detailed Description
Abbreviations/ Definitions: cough severity index (CSI), Cough quality of life questionnaire (CQLQ), proton pump inhibitor (PPI), nasopharyngolaryngoscopy (NPL), University of South Florida (USF), superior laryngeal nerve (SLN), upper airway cough syndrome (UACS), food and drug administration (FDA), investigational new drug (IND), medical record number (MRN), electronic medical record (EMR), ear nose and throat (ENT), angiotensin converting enzyme (ACE), chronic rhinosinusitis (CRS), gastroesophageal reflux disorder (GERD), pulmonary function test (PFT), Reflux finding score (RFS), Speech and language pathology (SLP)
Participants will be referred into (via other USF affiliated departments) or recruited within the University of South Florida Department of Otolaryngology practice. Individuals will be screened for eligibility based on referral description. Eligibility will be determined by history at initial visit based on inclusion and exclusion criteria. Eligible participants will be adults with chronic cough >8 weeks duration and presumed neurogenic cough based on initial evaluation. Chronic throat clearing with foreign body sensation for >8 weeks duration will also meet criteria for inclusion and will be used synonymously with and considered chronic cough for the remainder of this protocol and study. Patients will be excluded if primary cause is determined to not be neurogenic. Patients will be excluded if there are other possible significant contributors to the cough that have not been treated (no other obvious treatable and untreated cause), or they will be treated per the standard of care prior to enrolling in this study. Patients will be screened for at least a 4-week course of PPI therapy during duration of symptoms. Patients with possible UACS were included if a trial of medications had been completed previously. If patients are on long term medications that are effective for their respective related condition (but still ineffective at adequately controlling chronic cough), they will be encouraged to make no unnecessary changes through treatment/study duration. These include acid suppression therapy (outside of the recent 6-week trial of PPI if applicable), therapy for UACS symptoms if indicated (eg, Flonase and antihistamine, saline rinses, etc.), neuromodulators (e.g., gabapentin). Patients were excluded if they started any of these medications in last month and were not willing to discontinue them for the duration of the trial. Participants must be willing and able to consent to participate in the study, be willing to be assigned to and undergo intervention or the placebo, and be willing to adhere to the study protocol for the duration of the trial: 2-4 visits, approximately 3 weeks of treatment, 6 week PPI trial with 4 week discontinuation period if no improvement (if applicable), up to 12 week follow up questionnaires (survey only), participate in cough suppression, take PPI as prescribed for duration specified.
Participants were excluded if at any point they met the following criteria: unwilling to participate in protocol, allergic to Bupivacaine or triamcinolone acetonide suspension, presence of severe uncontrolled medical condition, any significant pulmonary processes (including chronic obstructive pulmonary disease, bronchiectasis, non-asthmatic eosinophilic bronchitis, structural abnormalities, etc.), presence of asthma (determined by presence of abnormal pulmonary function test (PFT) provocation testing), concern for aerodigestive tract malignancy from history or exam, structural abnormality seen on NPL or prior imaging, immunocompromised, current smoker, use of ACE inhibitor at time of or one month preceding first injection, or vulnerable population.
Eligible participants underwent NPL will be also conducted at initial visit (Reflux finding score, RFS). Informed consent will be obtained at this time. Demographics (including sex, age, past medical history, related comorbidities, sidedness of globus sensation, neuromodulator use, results of any prior chest radiograph during symptom duration, ever referred to SLP for voice therapy) will be recorded at initial visit. Related comorbidities include UACS, allergic rhinitis, CRS, GERD. Patients who had not previously received adequate PPI trial were placed in 4 to 6-week course and encourage/counseled to complete lifestyle modifications to reduce reflux. Patients with less than complete response to PPI (persistent clinically significant cough) therapy were included in study. Patients follow-up visit for consideration of injection was schedule one month after discontinuing PPI trial. Questionnaire scores were determined immediately prior to first injection. All patients were counseled on cough suppression prior to initial injection. Patients were randomly assigned to placebo (2-cc normal saline) or intervention (total of 2-cc injection, mixture consisting of 1-cc of Bupivacaine and 1-cc of Kenolog-40) injection groups using computer-generated random assignment. Injections will begin at initial visit or at follow-up visit if trial of PPI required. Immediately preceding injections, patients will be given 5 sprays of 4% topical lidocaine to facilitate injection which will also act to facilitate patient blinding. Injection will be delivered into the region of the proximal superior laryngeal nerve using greater cornu of hyoid and superior cornu of thyroid cartilage as landmarks. Injection will be placed 1-cm anterior to the midpoint of these landmarks.
If globus sensation or trigger site was localized to one side, this was recorded and initial injection was directed at this side, otherwise this was picked at random. The second injection was directed at the same side if partial improvement (patient's subjective sense of least 50% reduction of symptoms) was observed after the first injection. The second injection was directed at the contralateral side if there was no initial improvement. Third injection was offered if there was improvement during either of the first two injections (completed on the ipsilateral side of prior two injections or the side with most improvement if bilateral had been completed). There was no second/third injection if complete resolution of symptoms was observed after the preceding injection. Follow up for repeat injection will be scheduled in 1-2 weeks, and exact time recorded. Questionnaire scores were then recorded 2 weeks after final injection of the series. Surveys (see next section, CSI and CQLQ) will also be sent for patients to complete at 6 and 12 weeks after last injection, which will be analyzed in subsequent study. Surveys will have a one-week window to be considered in their nominal category. All adverse events will be recorded. See data capture sheet for collected variables.
Study Type
Enrollment (Anticipated)
Phase
- Phase 3
Contacts and Locations
Study Contact
- Name: Anthony J Grady, MD
- Phone Number: (813) 974-5638
- Email: agrady@usf.edu
Study Locations
-
-
Florida
-
Tampa, Florida, United States, 33612
- Recruiting
- University of South Florida South Tampa Clinic
-
Contact:
- Anthony Grady, MD
- Phone Number: 813-974-4683
- Email: agrady@usf.edu
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- English speaking adults referred into or treated by the University of South Florida department of Otolaryngology practice with chronic cough (including throat clearing with globus) as determined by presence > 8 weeks duration
- Presumed to have neurogenic component based on history with no other obvious treatable (and untreated) cause
- refractory to proton pump inhibitor (PPI) therapy (at least 4 week trial)
- no improvement of upper airway cough syndrome symptoms with medications if indicated (eg, Flonase and antihistamine)
- Patients may continue any medications for possibly related conditions (e.g., Flonase, gabapentin, etc.) including allergies, chronic sinusitis, acid reflux; there should be NO changes to mediation regimen within 1 months of study initiation (with the exception of patients who were not previously on PPI that failed trail of PPI which they will discontinue 1 month prior to first intervention)
- Willingness to participant be assigned and adhere to the protocol. Participants must be willing and able to consent to participate in the study, be willing to undergo intervention or the placebo, and be willing to commit to adhere to the study protocol for the duration of the trial (PPI trial if applicable, 2-4 visits, follow up questionnaires, participate in cough suppression)
Exclusion Criteria:
- unwilling to participate in protocol
- allergic to Marcaine/lidocaine or predisposing condition to allergy
- uncontrolled medical condition (this will be treated on a case by case basis using clinical judgment of risks and the medical condition, with participants being excluded who have conditions that may significantly increase the odds of having a serious or life-threatening reaction)
- pulmonary processes (including chronic obstructive pulmonary disease (chronic obstructive pulmonary disease), bronchiectasis, non-asthmatic eosinophilic bronchitis, structural abnormalities, etc.)
- asthma (must have history of abnormal pulmonary function provocation testing)
- structural abnormality laryngoscopy (this does not pertain to inflammatory findings)
- immunocompromised
- current smoker (>1 cigarette in past month)
- use of angiotensin converting enzyme inhibitor current or within past month
- Vulnerable population: students, employees, socially or economically disadvantaged, wards of the state, pregnant women, cognitively impaired adults, non-adults.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Bupivacaine/triamcinolone injection
2-cc injection (mixture consisting of 1-cc of 0.5% Bupivacaine injection and 1cc of 40mg/cc triamcinolone acetonide suspension injection) will be delivered percutaneously into the region of the proximal superior laryngeal nerve, every 1-2 weeks, for total of 2 to 3 injections
|
2-cc injection (mixture consisting of 1-cc of 0.5% Bupivacaine injection and 1cc of 40mg/cc triamcinolone acetonide suspension injection) will be delivered percutaneously into the region of the proximal superior laryngeal nerve, every 1-2 weeks, for total of 2 to 3 injections
|
Placebo Comparator: Saline injection
2-cc injection of normal saline will be delivered percutaneously into the region of the proximal superior laryngeal nerve, every 1-2 weeks, for total of 2 to 3 injections
|
2-cc injection of saline will be delivered percutaneously into the region of the proximal superior laryngeal nerve, every 1-2 weeks, for total of 2 to 3 injections
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
2 week post-treatment cough severity index score improvement
Time Frame: Immediately pre-treatment and post-treatment at 2 weeks
|
Measure of efficacy of intervention by comparing change in pre-treatment and 2 week post-treatment cough severity index scores between intervention to placebo
|
Immediately pre-treatment and post-treatment at 2 weeks
|
2 week post-treatment cough-specific quality-of-life questionnaire score improvement
Time Frame: Immediately pre-treatment and post-treatment at 2 weeks
|
Measure of efficacy of intervention by comparing change in pre-treatment and 2 week post-treatment cough-specific quality-of-life questionnaire scores between intervention to placebo
|
Immediately pre-treatment and post-treatment at 2 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
6 week post-treatment cough severity index score improvement
Time Frame: Immediately pre-treatment and post-treatment at 6 weeks
|
Measure of efficacy of intervention by comparing change in pre-treatment and 6 week post-treatment cough severity index scores between intervention to placebo
|
Immediately pre-treatment and post-treatment at 6 weeks
|
12 week post-treatment cough severity index score improvement
Time Frame: Immediately pre-treatment and post-treatment at 12 weeks
|
Measure of efficacy of intervention by comparing change in pre-treatment and 12 week post-treatment cough severity index scores between intervention to placebo
|
Immediately pre-treatment and post-treatment at 12 weeks
|
6 week post-treatment cough-specific quality-of-life questionnaire score improvement
Time Frame: Immediately pre-treatment and post-treatment at 6 weeks
|
Measure of efficacy of intervention by comparing change in pre-treatment and 6 week post-treatment cough-specific quality-of-life questionnaire scores between intervention to placebo
|
Immediately pre-treatment and post-treatment at 6 weeks
|
12 week post-treatment cough-specific quality-of-life questionnaire score improvement
Time Frame: Immediately pre-treatment and post-treatment at 12 weeks
|
Measure of efficacy of intervention by comparing change in pre-treatment and 12 week post-treatment cough-specific quality-of-life questionnaire scores between intervention to placebo
|
Immediately pre-treatment and post-treatment at 12 weeks
|
Collaborators and Investigators
Sponsor
Publications and helpful links
General Publications
- Simpson CB, Tibbetts KM, Loochtan MJ, Dominguez LM. Treatment of chronic neurogenic cough with in-office superior laryngeal nerve block. Laryngoscope. 2018 Aug;128(8):1898-1903. doi: 10.1002/lary.27201. Epub 2018 Apr 18.
- Dhillon VK. Superior laryngeal nerve block for neurogenic cough: A case series. Laryngoscope Investig Otolaryngol. 2019 Jul 5;4(4):410-413. doi: 10.1002/lio2.292. eCollection 2019 Aug.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Respiratory Tract Diseases
- Respiration Disorders
- Signs and Symptoms, Respiratory
- Cough
- Physiological Effects of Drugs
- Molecular Mechanisms of Pharmacological Action
- Central Nervous System Depressants
- Peripheral Nervous System Agents
- Enzyme Inhibitors
- Sensory System Agents
- Anesthetics
- Anti-Inflammatory Agents
- Immunosuppressive Agents
- Immunologic Factors
- Glucocorticoids
- Hormones
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Anesthetics, Local
- Triamcinolone
- Triamcinolone Acetonide
- Triamcinolone hexacetonide
- Triamcinolone diacetate
- Bupivacaine
Other Study ID Numbers
- STUDY001182
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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