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Validity of Fractional Exhaled Nitric Oxide and Impulse Oscillometry in Patients With Cough Variant Asthma

NCT03573284 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 146

Last updated 2021-07-28

No results posted yet for this study

Summary

The aim of the research is to evaluate the clinical value of fractional exhaled nitric oxide(FeNO) ,impulse oscillometry(IOS) and mid-expiratory flow (MEF) in patients with cough variant asthma.

Conditions

  • Cough Variant Asthma

Interventions

DIAGNOSTIC_TEST

fractional exhaled nitric oxide(FeNO)

FeNO level was evaluated according to the American Thoracic Society (ATS)/ERS recommendations using a NIOX MINO analyzer (Aerocrine, Solna, Sweden) .Subjects were informed to deeply inhale NO-free air and immediately exhale in full via a mouthpiece at a constant flow rate (50 ml/s) for 10s.

DIAGNOSTIC_TEST

impulse oscillometry(IOS)

The patient take seats, body relax, make sure the mouthpiece is fully covered by mouth, then clip nose with both hands to cover both sides of the cheek, and then calm breathing 1 minutes, the computer is automatically collected data calculation and print out the measurement results.

Sponsors & Collaborators

  • Zhujiang Hospital

    lead OTHER

Principal Investigators

  • Yu Hupeng · Southern Medical University, China

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-08-12
Primary Completion
2019-06-30
Completion
2019-06-30

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03573284 on ClinicalTrials.gov