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Healthy SubjectsNCT03467880

Multicenter Study of Impulse Oscillometry in Chinese

An observational study of Healthy Subjects and Chronic Obstructive Pulmonary Disease, run by Guangzhou Institute of Respiratory Disease at 2 sites in China.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

The purpose of this study is to establish the reference values of impulse oscillometry (IOS) in healthy Chinese, and compare the indices of IOS in patients with lung disease, such as chronic obstructive pulmonary disease (COPD), asthma, interstitial lung disease (ILD), and upper airway Obstruction (UAO). Read more about this study

Who is it for?
Ages 4 to 95 yearsHealthy volunteers can take part
What is being tested?
Clinical Observation
How many people
4,000 participants
Where
2 sitesChina
Study dates
Sep 2016to Dec 2018
How long will I take part?
1 Day
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 4 to 95 years
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult, Older adult

Study population: Subjects will be recruited from outpatient clinics.

Who may be able to join

  • life-long non-smokers
  • no symptoms and history of chronic cardiopulmonary diseases (chronic bronchitis, asthma, lung cancer, pulmonary fibrosis, pulmonary tuberculosis, chronic heart diseases, etc.)
  • no abnormal findings on physical examination
  • written informed consent was obtained
  • Diagnosis of chronic obstructive pulmonary disease (COPD), as classified by the Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines and post-bronchodilator FEV1/FVC (forced vital capacity) < 70%.
  • Diagnosis of asthma, as classified by national and international asthma guidelines.
  • ILD diagnosis confirmed by lung biopsy, X ray or BALF analysis.
  • Diagnosis of UAO.

Who cannot join

  • upper or lower respiratory infection within 4 weeks
  • long-term exposure to harmful gas or particles
  • using β-blocker for treatment
  • pregnant women, epileptic
  • other diseases or surgeries potentially affecting lung function

Trial locations and contacts

2 sites in 1 country.

Jinping Zheng, MD contact

+86-20-83062729

jpzhenggy@163.com

China2 sites, 2 recruiting
  • Beijing Hospital

    Beijing, 100005

    Yimeng Yang, +86 13911738389, d860@sina.com

    Tieying Sun

    Recruiting
  • State Key Laboratory of Respiratory Disease,China Clinical Research Center of Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University

    Guangzhou, 510120

    Jinping Zheng, MD, +86-20-83062729, jpzhenggy@163.com

    Not yet recruiting

Other trials in China

About this study

The purpose of this study is to establish the reference values of impulse oscillometry (IOS) in healthy Chinese, and compare the indices of IOS in patients with lung disease, such as chronic obstructive pulmonary disease (COPD), asthma, interstitial lung disease (ILD), and upper airway Obstruction (UAO).

Being tested
Clinical Observation
Keywords
Impulse Oscillometry, Chinese, Healthy Subjects, Chronic Obstructive Pulmonary Disease, Asthma, Interstitial Lung Disease, Upper Airway Obstruction, Reference Values
Medical subject headings
Pulmonary Disease, Chronic Obstructive, Asthma, Lung Diseases, Interstitial, Airway Obstruction

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Clinical ObservationOther

    No treatment given but observation with IOS

Study groups in NCT03467880
Study groupRoleWhat they receive
Healthy subjectsHealthy subjects.
Receives: Other: Clinical Observation
Chronic obstructive pulmonary diseasePatience with chronic obstructive pulmonary disease.
Receives: Other: Clinical Observation
AsthmaPatience with asthma.
Receives: Other: Clinical Observation
Interstitial lung diseasePatience with interstitial lung disease.
Receives: Other: Clinical Observation
Upper airway obstructionPatience with upper airway obstruction.
Receives: Other: Clinical Observation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Airway resistance

    The indices of Airway resistance include total respiratory impedance (Zrs).

    Measured: one minute

Secondary outcomes (1)
  1. forced vital capacity (FVC), forced expiratory volume in one second (FEV1), FEV1/FVC, and maximum midexpiratory flow (MMEF).

    The indices of spirometry include forced vital capacity (FVC), forced expiratory volume in one second (FEV1), FEV1/FVC, and maximum midexpiratory flow (MMEF).

    Measured: one minute

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Mar 2018
  2. Study startSep 2016
  3. Primary completionJun 2018 (estimated)
  4. Study completionDec 2018 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Cross-sectional
Enrolment
4,000 participants (estimated)
Target duration
1 Day
IDs, dates and publications
ClinicalTrials.gov ID
NCT03467880
Sponsor's protocol ID
GIRD201536
Status last verified
Mar 2018
First submitted
14 Feb 2018
Last updated
16 Mar 2018
Results posted
No
Data monitoring committee
Yes

Publications

  • Liang XL, Gao Y, Guan WJ, Du J, Chen L, Han W, Liu JM, Lu Y, Peng Y, Zhao BR, Wang T, Zheng JP. Reference values of respiratory impedance with impulse oscillometry in healthy Chinese adults. J Thorac Dis. 2021 Jun;13(6):3680-3691. doi: 10.21037/jtd-20-3376.

    PubMed 34277060

Questions about this trial

What is this clinical trial studying?

An observational study of Healthy Subjects and Chronic Obstructive Pulmonary Disease, run by Guangzhou Institute of Respiratory Disease at 2 sites in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 16 Mar 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Jinping Zheng, MD (+86-20-83062729, jpzhenggy@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Airway resistance (time frame: one minute). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03467880, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Mar 2018.

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