Is the Exhaled Nitric Oxide in Infants a Predictive Marker of Asthma ? (NOnourisson)

Assistance Publique - Hôpitaux de Paris

Status

Completed

Conditions

Asthma

Treatments

Other: Measure of the exhaled NO

Study type

Interventional

Funder types

Other

Identifiers

NCT01239199

P 070802

Details and patient eligibility

About

Background:

It seems that in the infants and the young children, the increase of the Exhaled Nitric Oxide (eNO) is in connection with: (1) the risk of developing respiratory symptoms; (2) the risk of family and personal atopy; (3) the intensity of the respiratory symptoms; (4) the risk of passage of recurrent wheezing to asthma; (5) and contrary to the fact that the investigators noticed at the child's a positive relation with the environmental tobacco smoke

Objective: the investigators objective is to bring to light that the rise of the eNO, a non invasive biomarker of the bronchial inflammation, would be a risk factor expected from passage of recurrent wheezing of the infant and the young child (of less than 36 months old) towards the asthma of the child.Methods: Once the diagnosis of recurrent wheezing established, the investigators estimate by questionnaire the severity of the asthma, the personal and familial atopy, the collection of the environmental data. After allergic exploration (skin tests and assay of serum total and specific IgE, complete blood count), the eNO is measured by an off-line tidal breathing method using a chemiluminescence NO analyzer. Annually, a questionnaire will be send to families to appreciate the persistence or the remission of the asthma. After a simple descriptive analysis of the population and a multifactorial descriptive analysis, the investigators shall look for the connections between the rise of the eNO and the various clinical, biological and environmental parameters known to influence the variations of this marker. Then the investigators shall select a set of explanatory variables for a multivariate analysis by a logistic regression step by step.

Full description

This study is a epidemiological observation study

Enrollment

86 patients

Sex

All

Ages

6 to 36 months old

Volunteers

No Healthy Volunteers

Inclusion criteria

Infant between 6 and 36 months
More than 3 wheezing episodes
Questionary and biological assessment for recurrent wheeze
Signature of the consent by 2 parents or by the only one of 2 parents (if this last one is the only present in the inclusion of the child)

Exclusion criteria

Infant with respiratory disease in neonatal period
Infant with other obstructive pathology (cystic fibrosis, Primary Ciliary Dyskinesia,...)
Infant who have a respiratory infection less than 4 weeks
Infant with asthma exacerbation or who still have corticosteroid treatment
Infant without social security from their parents