# FFP3 Respirators and Ears - Effects on Middle Ear Pressure and Hearing

> **NCT05222230** · NA · UNKNOWN · sponsor: **Liverpool University Hospitals NHS Foundation Trust** · enrollment: 12 (estimated)

## Conditions studied

- Eustachian Tube Dysfunction
- Hearing Disorders
- Nasal Obstruction

## Interventions

- **OTHER:** FFP3 Mask

## Key facts

- **NCT ID:** NCT05222230
- **Lead sponsor:** Liverpool University Hospitals NHS Foundation Trust
- **Sponsor class:** OTHER_GOV
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2022-07-23
- **Primary completion:** 2022-12-31
- **Final completion:** 2022-12-31
- **Target enrollment:** 12 (ESTIMATED)
- **Last updated:** 2022-05-31


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05222230

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05222230, "FFP3 Respirators and Ears - Effects on Middle Ear Pressure and Hearing". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT05222230. Licensed CC0.

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