CClinicalTrials.gg
CompletedNCT00762931Updated May 15, 2018Results posted

Neurostimulation for the Relief of Acute Bronchoconstriction

An interventional study of Resolve Stimulator and Proximity Lead in Asthma, sponsored by ElectroCore INC. Completed at 6 sites in United States. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2018-05-15.

Sponsored by ElectroCore INC · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
25
Allocation
Not applicable
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The goal of this study is to validate design for the Resolve™ Stimulator and Proximity Electrode and the associated procedure to quickly and safely place an electrode into the neck, in the vicinity of the vagus nerve by a physician in either the Emergency Department or other appropriate hospital inpatient setting (e.g., ICU). The secondary goal is to confirm that the electrical signal being delivered via this electrode rapidly counters bronchoconstriction and improves airway flow.

Read the detailed description

The present study is to evaluate the safety of a new neurostimulator device, the Resolve Stimulator and Proximity Lead™, which comprises an external electrical signal generator coupled to temporary electrode that is percutaneously inserted in the neck.

Sponsor believes, based on animal testing data provided as well as consultations with physicians who regularly treat patients suffering from attacks of acute bronchoconstriction in ER and inpatient hospital settings, that this device could be used in the skilled care hospital setting to help rapidly relax the smooth muscle in the airway, relieving a clinically significant portion of the bronchoconstriction suffered by patients experiencing moderate to severe asthma attacks, allowing more effective delivery of inhaled medications to restore the patient to his or her baseline respiration status.

02

Conditions studied

  • Asthma

Keywords

  • bronchoconstriction
  • neuromodulation
  • neurostimulation
  • vagus nerve stimulation
  • vagal nerve stimulation
  • nVNS
  • VNS
  • non invasive
  • gammacore
03

In context

Lead sponsor

ElectroCore INC is the lead sponsor of 19 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Male / Female, Age 18-65
  • Subject declares a medical history of asthma or sufficient prior clinical experience/records exists to confirm the subject has received a diagnosis of bronchoconstriction
  • Completed >1 hrs of conventional breathing and related medication treatments without improvement in FEV1 to > 70% predicted
  • Able to give Informed Consent

Exclusion criteria

Exclusion Criteria:

  • Scaring / abscess other problems with neck at electrode placement site
  • Known or suspected carotid artery disease (i.e. bruits or history of stenosis)
  • Suspected or confirmed coagulopathy
  • Suspected or confirmed sepsis
  • Irregular heart rate, rhythm
  • Receiving pressors to maintain blood pressure
  • Presently implanted electrical and/or neurostimulator device, including but not limited to cardiac pacemaker, vagal neurostimulator, deep brain stimulator, spinal stimulator, bone growth stimulator, or cochlear implant
  • Allergy to local anesthetics used for placement of the lead
  • History of lung cancer, emphysema, chronic obstructive pulmonary disease, or other comorbidity that might otherwise compromise the expected air flow volumes in the lungs
  • At risk of imminent respiratory collapse

    • Lung Function: FEV1 \< 40% predicted
    • Signs and Symptoms: Extreme symptoms at rest, accessory muscle use, chest retraction
    • Alert State: Drowsy, confused
  • Treatment with anti-cholinergic medications within 4 hours of enrollment
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
25 participants (actual)

Study arms

  • Experimental
    Resolve Stimulator and Proximity Lead

    An electrical neurostimulation signal will be applied to the neck via subcutaneous lead placement for vagal nerve stimulation, all subjects will receive active treatment

    Device: Resolve Stimulator and Proximity Lead

Interventions

  • DeviceResolve Stimulator and Proximity Lead

    An electrical neurostimulation signal will be applied to the neck via subcutaneous lead placement for vagal nerve stimulation

06

What researchers measure

Primary outcomes

  1. Safety- Number of Participants With Adverse Events

    Safety- Number of participants that reported Adverse Events

    Time frame: 2 weeks

Secondary outcomes

  1. Improvement of Common Measures of Breathing Performance, Forced Expiry Volume in 1second (FEV1).

    An assessment of Forced Expiry Volume in 1second (FEV1) measurements were taken throughout the course of treatment (15,30 and 60 minutes). Peak FEV1 measurements were recorded for each subject, and the number of minutes the subject had received treatment at the time of peak FEV1. The threshold for improvement was set at 12% over baseline at any of the time points (15,30 and 60 minutes). Outcome measure data indicates the number of subjects above 12%.

    Time frame: 60 minutes

07

Results

Posted May 15, 2018

Participant flow

Participant flow — Overall Study
MilestoneResolve Stimulator and Proximity Lead
Started25
Completed23
Not completed2

Outcome measures

PrimarySafety- Number of Participants With Adverse Events

Safety- Number of participants that reported Adverse Events

Time frame:
2 weeks
Reported as:
Count of participants · Participants
Safety- Number of Participants With Adverse Events
ParticipantsResolve Stimulator and Proximity Lead
Safety- Number of Participants With Adverse Events16
SecondaryImprovement of Common Measures of Breathing Performance, Forced Expiry Volume in 1second (FEV1).

An assessment of Forced Expiry Volume in 1second (FEV1) measurements were taken throughout the course of treatment (15,30 and 60 minutes). Peak FEV1 measurements were recorded for each subject, and the number of minutes the subject had received treatment at the time of peak FEV1. The threshold for improvement was set at 12% over baseline at any of the time points (15,30 and 60 minutes). Outcome measure data indicates the number of subjects above 12%.

Time frame:
60 minutes
Reported as:
Count of participants · Participants
Improvement of Common Measures of Breathing Performance, Forced Expiry Volume in 1second (FEV1).
ParticipantsResolve Stimulator and Proximity Lead
Improvement of Common Measures of Breathing Performance, Forced Expiry Volume in 1second (FEV1).19

Adverse events

Collected over 2 weeks. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Resolve Stimulator and Proximity Lead1/25 (4%)11/25 (44%)8/25 (32%)
Most frequent serious events
Most frequent serious events
EventResolve Stimulator and Proximity Lead
Hospitalization for asthma exacerbationRespiratory, thoracic and mediastinal disorders4/25
Hospitalization for persistant asthma symptomsRespiratory, thoracic and mediastinal disorders2/25
Hospitalization for chest pain associated with cocaine useRespiratory, thoracic and mediastinal disorders1/25
Death at 15 days post treatmentRespiratory, thoracic and mediastinal disorders1/25
Hospitalization for observation; respiratoryRespiratory, thoracic and mediastinal disorders1/25
Hospitalization for pneumoniaRespiratory, thoracic and mediastinal disorders1/25
Hospitalization for continuation of asthma exacerbationReproductive system and breast disorders1/25
Most frequent other events
Most frequent other events
EventResolve Stimulator and Proximity Lead
Muscle twitching in neckMusculoskeletal and connective tissue disorders3/25
Sweating during attempted lead advancementEndocrine disorders1/25
Lead displacementSurgical and medical procedures1/25
Neck pain for 2 days post treatmentMusculoskeletal and connective tissue disorders1/25
HematomaVascular disorders1/25
Bleeding at insertion siteVascular disorders1/25
Asthma exacerbationRespiratory, thoracic and mediastinal disorders1/25

Baseline characteristics

Safety population

Age, Continuous
Age, Continuous(years)Resolve Stimulator and Proximity Lead
Mean41 (19 to 65)
Sex: Female, Male
Sex: Female, Male(Participants)Resolve Stimulator and Proximity Lead
Female16
Male9
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Resolve Stimulator and Proximity Lead
Black18
Hispanic and white1
American Indian or Alaska Native1
White2
Other1
Hispanic Latino1
Hispanic Black1
Region of Enrollment
Region of Enrollment(Participants)Resolve Stimulator and Proximity Lead
United States25
08

Study locations

6 sites
  • Rush University Medical Center
    Chicago, Illinois 60612, United States
  • Henry Ford Health System
    Detroit, Michigan 48202, United States
  • William Beaumont Hospital
    Royal Oak, Michigan 48073, United States
  • Hennepin County Medical Center
    Minneapolis, Minnesota 55415, United States
  • Washington University School of Medicine, Barnes-Jewish Hospital,
    Saint Louis, Missouri 63110, United States
  • Dorrington Medical Associates
    Houston, Texas 77030, United States
09

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 15, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00762931
Lead sponsor
ElectroCore INC
Responsible party
Sponsor
First posted
Sep 30, 2008
Start date
Sep 2008
Primary completion
Sep 2010
Completion
Oct 2010
Results posted
May 15, 2018
Last update
May 15, 2018

Study contacts

JP Errico
study director · ElectroCore INC

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2018. You cannot join it, but the record below documents what was studied.

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