Research on the Application of Electrical Impedance Tomography in Bronchial Challenge Testing

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-08-01

Study Completion Date

2025-06-30

Brief Summary

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The purpose of this study was to examine whether electrical impedance tomography (EIT) was capable of identifying the deteriorated lung function on a regional level during bronchial challenge testing and whether EIT may provide additional information during bronchial challenge testing and identify spatial and temporal heterogeneity of regional lung function.

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Detailed Description

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The content of this study includes:

1. Can EIT identify the uneven ventilation caused by airway contraction in patients during bronchial provocation tests.
2. Can EIT monitor airway contraction in patients before Spirometer examination after inhaling activators.
3. Can EIT observe uneven ventilation caused by airway contraction through tidal breathing after the patient inhales activator.

Conditions

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Asthma

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

1. Patients suspected of asthma who require bronchial challenge testing.
2. The Bronchodilator responsiveness testing is negative.
3. patients with a pre-bronchodilator FEV1 \>60% predicted.
4. No contraindications for bronchial provocation test examination.
5. Fully understand the purpose and significance of this study, and voluntarily participate in the research.

Exclusion Criteria

1\. patients with a pre-bronchodilator FEV1≤60% predicted.

1. Contraindications for bronchial challenge testing.
2. Pregnant or lactating women.
3. After pacemaker surgery.

Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes