ClinicalTrials.gg
Status unknownNCT03467880Updated Mar 16, 2018

Multicenter Study of Impulse Oscillometry in Chinese

An observational study in Healthy Subjects, Chronic Obstructive Pulmonary Disease and Asthma, sponsored by Guangzhou Institute of Respiratory Disease. Status unknown at 2 sites in China. Open to participants aged 4 Years to 95 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-03-16.

Sponsored by Guangzhou Institute of Respiratory Disease · Observational

The sponsor has not verified this record recently (last verified Mar 2018), so the status shown — last known as Recruiting — may be out of date.

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Study type
Observational
Model
Cohort
Time perspective
Cross-sectional
Enrollment
4,000
Ages
4 Years to 95 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 22 studies in Pulmonary Disease, Chronic Obstructive by Guangzhou Institute of Respiratory Disease — 2 open to participants now, 3 under way, none of them phase 3. Pulmonary Disease, Chronic Obstructive · Guangzhou Institute of Respiratory Disease.

Started
2016
with 5 others
Observational
7 of 22
2 open now
Registered
11th of 22
by date

Among the 22 studies in Pulmonary Disease, Chronic Obstructive by Guangzhou Institute of Respiratory Disease, this one is one of 6 that started in 2016, is one of 7 observational ones, and was the 11th registered.

Pulmonary Disease, Chronic Obstructive

5,521 studies on the registry are indexed under Pulmonary Disease, Chronic Obstructive; 857 are open to participants now.

Browse Pulmonary Disease, Chronic Obstructive studies →

Open to participants now

2 of the 22 studies in Pulmonary Disease, Chronic Obstructive by Guangzhou Institute of Respiratory Disease are open now, in 1 country. Recruiting first, the newest first:

By country, each count listing its studies:

All 2 open studies →

Where they have run

Who these studies take

Of the 557 Pulmonary Disease, Chronic Obstructive studies recruiting now, 306 (55%) set no upper age limit and 82 (15%) stop at 75 or younger; 29 take children under 18; 88 take healthy volunteers.

This study: 4 Years to 95 Years · all sexes · healthy volunteers too.

The full table on the hub →

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 22 studies in Pulmonary Disease, Chronic Obstructive by Guangzhou Institute of Respiratory Disease, or all of them as a file.
02

Study 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).

03

Conditions studied

  • Healthy Subjects
  • Chronic Obstructive Pulmonary Disease
  • Asthma
  • Interstitial Lung Disease
  • Upper Airway Obstruction

Keywords

  • Impulse Oscillometry
  • Chinese
  • Healthy Subjects
  • Chronic Obstructive Pulmonary Disease
  • Asthma
  • Interstitial Lung Disease
  • Upper Airway Obstruction
  • Reference Values
04

Who can participate

Ages eligible
4 Years to 95 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

Subjects will be recruited from outpatient clinics.

Eligibility criteria

Inclusion Criteria for healthy subjects:

  • 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 was obtained

Inclusion Criteria for :

  • Diagnosis of chronic obstructive pulmonary disease (COPD), as classified by the Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines and post-bronchodilator /FVC (forced vital capacity) \< 70%.

Inclusion Criteria for asthma:

  • Diagnosis of asthma, as classified by national and international asthma guidelines.

Inclusion Criteria for ILD:

  • ILD diagnosis confirmed by lung , X ray or BALF analysis.

Inclusion Criteria for UAO:

  • Diagnosis of UAO.

Exclusion Criteria for healthy subjects:

  • 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
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

FEV1

From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

05

Study design

Observational model
Cohort
Time perspective
Cross-sectional
Enrollment
4,000 participants (estimated)
Target follow-up
1 Day
Patient registry
Yes

Groups and cohorts

  • Healthy subjects

    Healthy subjects.

    Other: Clinical Observation

  • Chronic obstructive pulmonary disease

    Patience with chronic obstructive pulmonary disease.

    Other: Clinical Observation

  • Asthma

    Patience with asthma.

    Other: Clinical Observation

  • Interstitial lung disease

    Patience with interstitial lung disease.

    Other: Clinical Observation

  • Upper airway obstruction

    Patience with upper airway obstruction.

    Other: Clinical Observation

Interventions

  • OtherClinical Observation

    No treatment given but observation with IOS

06

What researchers measure

Primary outcomes

  1. Airway resistance

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

    Time frame: one minute

Secondary outcomes

  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).

    Time frame: one minute

07

Study locations

1 of 2 sites recruiting
  • Beijing Hospital
    Beijing, 100005, China
    Recruiting
    • Yimeng Yang · Contactd860@sina.com · +86 13911738389
    • Tieying Sun · Principal investigator
    • Yimeng Yang · Sub investigator
  • 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, China
    Not yet recruiting
08

References and documents

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 ↗
09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Sep 2016, a primary completion of Jun 2018 and a completion of Dec 2018. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 14, 2018
First posted
Mar 16, 2018
Start
Sep 2016
Primary completionEst.
Jun 2018
CompletionEst.
Dec 2018
Last update
Mar 16, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 16, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03467880
Lead sponsor
Guangzhou Institute of Respiratory Disease
Responsible party
Jinping Zheng (Vice-director, Guangzhou Institute of Respiratory Disease) — Principal investigator
First posted
Mar 16, 2018
Start date
Sep 2016
Primary completion
Jun 2018 (estimated)
Completion
Dec 2018 (estimated)
Last update
Mar 16, 2018

Study contacts

Jinping Zheng, MD
Contact
jpzhenggy@163.com
+86-20-83062729
Jinping Zheng, MD
study chair · 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

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

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

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