- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04293640
Neural Respiratory Drive in Pulmonary Hypertension
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
NRD can be assessed by measuring parasternal electromyogram (EMG). Readings are taken by applying two small electrodes in the second intercostal space either side of the sternum and one to the shoulder. The electrodes are similar to those used in ECG acquisition. Measurements are then taken during normal breathing and also during maximal breathing effort ('sniff' procedure). Tests may be taken with patient recumbent at 45 degrees and supine. The test is non-invasive, has been safely performed in patients in previous studies and is not anticipated to cause any harm or distress. The total time for measurements will be around 20 minutes per patient.
NRD will be calculated as root mean square of normal tidal breathing as a proportion of maximal inspiratory effort (maximum inspiration from functional reserve capacity, taken as a sniff manoeuvre). Measurements will be performed in a ward based setting at the patient's bedside.
At the end of the inpatient stay for diagnosis, some patients are commenced on treatment and followed up in clinic. It would be the intention of the investigators to reassess these patients at clinic to test NRD and compare how this changes over time compared to other clinical parameters.
In addition, we will collect further readings of NRD in these patients when they attend for their standard follow up appointment. For the majority of patients, this will be after 3-4 months. For a subset of patients with chronic thromboembolic pulmonary hypertension, this may be up to one year after initial readings because these patients may be suitable for surgical intervention, which is not done locally and usually takes place 6-12 months after diagnosis at SPVU.
As such, the investigators intend that a patient will take part in the study for 52 weeks maximum, with most patients taking part for 16 weeks, and the study will not require them to have any additional attendances at hospital outwith their standard hospital admission for diagnosis and clinic follow up.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Locations
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Glasgow, United Kingdom, G81 4DY
- Recruiting
- Golden Jubilee National Hospital
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Contact:
- Catherine Sinclair
- Phone Number: 01419515000
- Email: catherine.sinclair@gjnh.scot.nhs.uk
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Able to give informed consent
- Being investigated for pulmonary hypertension
Exclusion Criteria:
- Patient is pregnant
- Patient has a diagnosed neuromuscular disorder
Study Plan
How is the study designed?
Design Details
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in neural respiratory drive
Time Frame: 3 months
|
Electromyogram (EMG) signals during tidal breathing as a proportion of EMG signals from maximal manoeuvre.
Measured at baseline and again 3 months after commencing treatment.
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3 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Cross sectional assessment of neural respiratory drive
Time Frame: Baseline test
|
Novel data on levels of respiratory drive from parasternal EMG signals in patients with pulmonary hypertension
|
Baseline test
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Martin Johnson, NHS Greater Glasgow and Clyde
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
Other Study ID Numbers
- 18/CARD/32
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
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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