FeNO Hairdressers Pilot

Study Overview
=================
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.

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

Conditions
-----------------
Occupational Exposure, Environmental Exposure

Intervention / Treatment
-----------------
* Diagnostic Test: FeNO measurement


Participation Criteria
=================
Eligibility Criteria
-----------------
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.

Ages Eligible for Study
-----------------
Minimum Age: 18 Years

Sexes Eligible for Study
-----------------
All

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Healthcare workers at Oslo University Hospital<br>Occupational control. Environmental exposure during commuting. | Diagnostic Test: FeNO measurement<br>* Diurnal measurements before work and at 3 hours after work start.<br>|
| Hairdressers<br>Occupational exposure for airway irritants during hairdressing. Environmental exposure during commuting. | Diagnostic Test: FeNO measurement<br>* Diurnal measurements before work and at 3 hours after work start.<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

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

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
Airway irritants