FeNO and Cytokines in Respiratory Syncytial Virus (RSV) and Non RSV Bronchiolitis in Relation to Future Asthma

FeNO and Cytokines in RSV and Non RSV Bronchiolitis in Relation to Future Asthma

The purpose of this study is to determine Fractional exhaled Nitric-Oxide (FeNO)levels and blood cytokines during acute bronchiolitis, and to seek for correlation between these markers and future development of asthma.

Inclusion Criteria:

• First episode of shortness of breath
• Children in ages 2 weeks to 2 years

Exclusion Criteria:

• Any chronic disease
• Congenital anomalies