# The Evaluation of Airway Dimension by Using Ultrasonography

> **NCT04175483** · — · UNKNOWN · sponsor: **National Taiwan University Hospital** · enrollment: 120 (estimated)

## Conditions studied

- Subglottic Airway Diameter in Normal Adults

## Interventions

- **OTHER:** assessment of subglottic diameter by ultrasonography

## Key facts

- **NCT ID:** NCT04175483
- **Lead sponsor:** National Taiwan University Hospital
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-11-01
- **Primary completion:** 2020-07-31
- **Final completion:** 2020-08-31
- **Target enrollment:** 120 (ESTIMATED)
- **Last updated:** 2020-08-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04175483

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04175483, "The Evaluation of Airway Dimension by Using Ultrasonography". Retrieved via AI Analytics 2026-06-04 from https://api.ai-analytics.org/clinical/NCT04175483. Licensed CC0.

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