# Observational Study for the Evaluation of Tracheal Stenosis in COVID-19 Patients

> **NCT04686721** · — · UNKNOWN · sponsor: **Istituto Clinico Humanitas** · enrollment: 200 (estimated)

## Conditions studied

- Tracheal Stenosis

## Interventions

- **DIAGNOSTIC_TEST:** Chest CT scan + baseline spirometry

## Key facts

- **NCT ID:** NCT04686721
- **Lead sponsor:** Istituto Clinico Humanitas
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2020-12-20
- **Primary completion:** 2021-09
- **Final completion:** 2021-10
- **Target enrollment:** 200 (ESTIMATED)
- **Last updated:** 2021-03-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04686721

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04686721, "Observational Study for the Evaluation of Tracheal Stenosis in COVID-19 Patients". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT04686721. Licensed CC0.

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