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Mucociliary Clearance, Airway Inflammation and Nasal Symptoms in Urban Motorcycle-drivers

NCT03510585 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 24

Last updated 2018-04-27

No results posted yet for this study

Summary

Professionals working in polluted areas may present increased airways symptoms and dysfunction. Rhinopharyngeal retrograde clearance (RRC) has been used to improve mucus clearance in infants with bronchitis and bronchiolitis. Flushing the nasal cavity with saline (S) has been used to reduce nasal inflammation in rhinitis and sinupathies. The aim of this study was to assess the effects of RRC and RRC plus S (RRC+S) on the airways in professional motorcyclists. Twenty-four male motorcyclists (mean age 36 years) were randomly assigned to RRC or RRC+S. Subjects were assessed at baseline and 15 days after interventions for airways assessments by saccharin test, mucus contact angle, cellularity in nasal lavage and airways symptoms with the use of SNOT-20 questionnaire. Data were analyzed by nonparametric ANOVA for repeated measures with Bonferroni´s correction. A passive nitrogen dioxide monitoring system was used to assess the mean personal air pollution exposure along the study period (NO2). The association between NO2 and the airways outcomes was analyzed by Spearman correlation test. At baseline, the two groups were similar in clinical, demographics and working aspects. From them, 100% had airways symptoms complaints and 33% had nasal MCC impairment. After treatments, both groups presented improvements in airways symptoms and nasal MCC. However, increased number of macrophages and ciliated cells were observed in nasal lavage of both groups. No associations between nitrogen dioxide and the outcome variables were detected. Rhinopharyngeal retrograde clearance seems to be useful in the clinical management of the upper airways symptoms and dysfunction in adults.

Conditions

  • Attitude to Health

Interventions

OTHER

saline and sniffing

This technique is a combination of positioning (laying down), saline instilation (5 ml in each side), sniffing (the side that received saline instilation) and throat vibration. Then the other side.

OTHER

sniffing

This technique is a combination of positioning (laying down), sniffing (the side that received saline instilation) and throat vibration. Then the other side.

Sponsors & Collaborators

  • Fundação de Amparo à Pesquisa do Estado de São Paulo

    collaborator OTHER_GOV

  • University of Sao Paulo

    lead OTHER

Principal Investigators

  • Paulo HN Saldiva, PhD · University of Sao Paulo

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2012-07-31
Primary Completion
2012-08-31
Completion
2012-08-31

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03510585 on ClinicalTrials.gov