# A Cross-sectional Study to Measure Cough in Severe Asthma

> **NCT03999203** · NA · COMPLETED · sponsor: **Queen's University, Belfast** · enrollment: 61 (actual)

## Conditions studied

- Asthma
- Cough

## Interventions

- **DRUG:** Citric acid
- **DEVICE:** Leicester Cough monitor
- **OTHER:** fractional exhaled nitric oxide testing (FeNO)
- **OTHER:** Patient reported outcome measures

## Key facts

- **NCT ID:** NCT03999203
- **Lead sponsor:** Queen's University, Belfast
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2017-10-04
- **Primary completion:** 2019-12-30
- **Final completion:** 2019-12-30
- **Target enrollment:** 61 (ACTUAL)
- **Last updated:** 2023-11-22

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03999203

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03999203, "A Cross-sectional Study to Measure Cough in Severe Asthma". Retrieved via AI Analytics 2026-05-30 from https://api.ai-analytics.org/clinical/NCT03999203. Licensed CC0.

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