- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02281097
Transdermal Vagal Stimulation for POTS
Transdermal Vagal Stimulation for the Treatment of Postural Tachycardia Syndrome
Some patients experience high heart rates and symptoms of light-headedness, fatigue, headache during standing despite well maintained blood pressure.
These patient are disabled and can't be in upright position for a longer time. The purpose of this study is to test whether electrical stimulation of a nerve through a skin of the ear may improve heart rate response and reduce disabling symptoms.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Background Postural Tachycardia Syndrome (POTS) is a syndrome characterized by disabling symptoms of inadequate cerebral perfusion on assuming the upright posture, including light-headedness, fatigue, palpitations, altered mentation, headache, nausea, presyncope, and occasionally syncope.
POTS is characterized by an excessive increase in heart rate and exaggerated increase in plasma catecholamine levels on standing in the absence of a blood pressure fall. These disabling symptoms persist for more than six months.
Objective The objective of this study is to study the effect of vagal stimulation on heart rate modulation during supine and upright posture as a treatment modality for patients with POTS.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Tennessee
-
Nashville, Tennessee, United States, 37232-2195
- Autonomic Dysfunction Center, Vanderbilt University Medical Center
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
Non-smoking patients who qualify with the criteria of idiopathic postural tachycardia syndrome will be studied. The criteria are:
- an increase of heart rate of 30 beats/minute or an upright heart rate of >= 120 bpm, and
- chronic problems of symptoms during upright posture for at least 6 month.
- Subjects must also be able to safely withdrawn from medications that influence heart rate, blood pressure, and hormone levels that regulate blood pressure.
- The age limit is 18-75 years.
Exclusion Criteria:
- Patients that have other major medical problems, such as cancer or heart disease are excluded because the influence of that diagnosis on the symptoms is not known.
- Pregnancy.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Vagal Stimulation First
Vagal stimulation to improve upright heart rate modulation and symptoms is given on first tilt study day. Placebo stimulation with ineffective low amplitude and frequency (sham intervention) is given on second tilt study. |
Application of current to skin above auricular branch of vagal nerve to modulate heart rate and symptoms
Application of low intensive current or frequency to skin above auricular branch of vagal nerve as sham intervention
|
Placebo Comparator: Placebo First
Placebo stimulation with ineffective low amplitude and frequency (sham intervention) is given on first tilt study day. Vagal stimulation to improve upright heart rate modulation and symptoms is given on second tilt study day. |
Application of current to skin above auricular branch of vagal nerve to modulate heart rate and symptoms
Application of low intensive current or frequency to skin above auricular branch of vagal nerve as sham intervention
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Heart Rate (average of 1 minute)
Time Frame: [-5,0,5,10,15,20,..,50 min] relative time from tilt
|
Upright heart rate and heart rate change from supine measured during graded tilt with 15 degrees increments each 5 minutes till 30 min of 75 degrees or abort.
|
[-5,0,5,10,15,20,..,50 min] relative time from tilt
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Orthostatic Symptoms (Subjective analog symptoms scale (0-100)
Time Frame: [-5,0,5,10,15,20,..,50 min] relative time from tilt
|
Subjective analog symptoms scale (0-100)
|
[-5,0,5,10,15,20,..,50 min] relative time from tilt
|
Orthostatic Tolerance (Maximal tolerated time in upright position)
Time Frame: [0-50 min] relative time from tilt
|
Maximal tolerated time in upright position
|
[0-50 min] relative time from tilt
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Andre Diedrich, MD, PhD, Vanderbilt University Medical Center
- Principal Investigator: Italo Biaggioni, MD, Vanderbilt University Medical Center
Publications and helpful links
Helpful Links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimated)
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
Other Study ID Numbers
- VANDERBILT_IRB_121816
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
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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