FeNO Hairdressers Pilot

Fraction of Exhaled Nitric Oxide (FeNO) in an Occupational Cohort of Hairdressers

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT05507944

Enrollment

Registered

2022-08-19

Start date

2022-09-15

Completion date

2022-11-15

Last updated

2022-12-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Occupational Exposure, Environmental Exposure

Keywords

Airway irritants

Brief summary

A 5-day cohort diurnal FeNO study of exposed and unexposed to airway irritants during hair treatments and commuting.

Detailed description

The project aims to increase the knowledge of daily variations in FeNO with emphasis on exposure of airway irritants during hairdressing treatments in an occupational setting and commuting. Daily measurements of FeNO before and after workplace exposure in an exposed and an unexposed cohort during a workweek (Monday to Saturday) will indicate patterns of proinflammatory responses in a dose-dependent manner. These may or may not be indicative of an increased risk for airway related disease. Results may be used for further studies of occupational hygiene, airway related disease and identification of endogenous volatile organic compounds during proinflammatory responses.

Interventions

DIAGNOSTIC_TESTFeNO measurement

Diurnal measurements before work and at 3 hours after work start.

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Inclusion criteria

* have given informed consent. * employed as hairdressers or at Oslo University Hospital as healthcare workers. * scheduled work for at least 3 hours daily for 5 days in the study week.

Exclusion criteria

* lung disease. * active smoker.

Design outcomes

Primary

Measure	Time frame	Description
Daily FeNO (ppb measured by Niox Vero) increase after occupational exposure.	1 day.	At start of work and after 3 hours. Hardressers vs. Health care workers.
Daily FeNO (ppb measured by Niox Vero) increase after enviromental exposure during commuting.	1 day.	At start of work and after 3 hours. Subgrouped after way of commuting.
Diurnal FeNO (ppb measured by Niox Vero) variations during a work week after occupational exposure.	6 days	At start of work and after 3 hours. Hardressers vs. Health care workers.
Diurnal FeNO (ppb measured by Niox Vero) variations during a work week after environmental exposure during commuting.	6 days	At start of work and after 3 hours. Subgrouped after way of commuting.

Countries

Norway

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026