# Physiology and Structure of the Small Airways in Patients With Chronic Airflow Obstruction or COVID-19

> **NCT04716023** · — · UNKNOWN · sponsor: **Imperial College London** · enrollment: 42 (estimated)

## Conditions studied

- Copd
- COVID-19
- Asthma
- Small Airways Disease

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04716023
- **Lead sponsor:** Imperial College London
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-08-23
- **Primary completion:** 2021-08-22
- **Final completion:** 2022-02-02
- **Target enrollment:** 42 (ESTIMATED)
- **Last updated:** 2021-01-20


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04716023

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04716023, "Physiology and Structure of the Small Airways in Patients With Chronic Airflow Obstruction or COVID-19". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT04716023. Licensed CC0.

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