# Changes in Capillary Carbon Dioxide Partial Pressure (pCO2) While Wearing FFP2 / FFP3 Masks

> **NCT04980820** · NA · COMPLETED · sponsor: **Medical University of Vienna** · enrollment: 200 (actual)

## Conditions studied

- Hypercapnia

## Interventions

- **OTHER:** No mask
- **DEVICE:** Filtering face mask 2 (FFP2)
- **DEVICE:** Filtering face mask 3 (FFP3)

## Key facts

- **NCT ID:** NCT04980820
- **Lead sponsor:** Medical University of Vienna
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-07-19
- **Primary completion:** 2022-02-28
- **Final completion:** 2022-02-28
- **Target enrollment:** 200 (ACTUAL)
- **Last updated:** 2022-12-19


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04980820

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04980820, "Changes in Capillary Carbon Dioxide Partial Pressure (pCO2) While Wearing FFP2 / FFP3 Masks". Retrieved via AI Analytics 2026-09-21 from https://api.ai-analytics.org/clinical/NCT04980820. Licensed CC0.

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