Abstract
Background: The fractional concentration of exhaled nitric oxide (FeNO) is a noninvasive marker for airway inflammation but requires further study in preschool-aged children to determine its clinical relevance. Objective: To determine whether the risk of respiratory tract illnesses (RTIs), disease burden, and atopic features are related to FeNO in preschool-aged children with moderate-to-severe intermittent wheezing. Methods: We determined FeNO using the off-line tidal breathing technique in 89 children, aged 12 to 59 months, with moderate-to-severe intermittent wheezing. The risk of RTI was determined by comparing participants with a baseline FeNO of greater than the 75th percentile (24.4 ppb) with those with a baseline FeNO at the 75th percentile or lower using Cox regression analysis. Results: The risk of RTI was significantly higher in children with an FeNO of greater than 24.4 ppb relative to those with lower FeNO values (adjusted relative risk, 3.80; 95% confidence interval, 1.74-8.22; P < .001). FeNO levels of greater than 24.4 ppb were associated with more positive skin test results to aeroallergens (P = .03) but not with other atopic characteristics or historic parameters of illness burden. Conclusions: An elevated FeNO in preschool-aged children with moderate-to-severe intermittent wheezing was associated with an increased risk of RTI during a 1-year follow-up. In addition, a higher FeNO was associated with aeroallergen sensitization.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 108-113 |
| Number of pages | 6 |
| Journal | Annals of Allergy, Asthma and Immunology |
| Volume | 103 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 2009 |
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All Science Journal Classification (ASJC) codes
- Immunology and Allergy
- Immunology
- Pulmonary and Respiratory Medicine
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Effect of elevated exhaled nitric oxide levels on the risk of respiratory tract illness in preschool-aged children with moderate-to-severe intermittent wheezing. / Beigelman, Avraham; Mauger, David; Phillips, Brenda R.; Zeiger, Robert S.; Taussig, Lynn M.; Strunk, Robert C.; Bacharier, Leonard B.
In: Annals of Allergy, Asthma and Immunology, Vol. 103, No. 2, 01.01.2009, p. 108-113.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effect of elevated exhaled nitric oxide levels on the risk of respiratory tract illness in preschool-aged children with moderate-to-severe intermittent wheezing
AU - Beigelman, Avraham
AU - Mauger, David
AU - Phillips, Brenda R.
AU - Zeiger, Robert S.
AU - Taussig, Lynn M.
AU - Strunk, Robert C.
AU - Bacharier, Leonard B.
PY - 2009/1/1
Y1 - 2009/1/1
N2 - Background: The fractional concentration of exhaled nitric oxide (FeNO) is a noninvasive marker for airway inflammation but requires further study in preschool-aged children to determine its clinical relevance. Objective: To determine whether the risk of respiratory tract illnesses (RTIs), disease burden, and atopic features are related to FeNO in preschool-aged children with moderate-to-severe intermittent wheezing. Methods: We determined FeNO using the off-line tidal breathing technique in 89 children, aged 12 to 59 months, with moderate-to-severe intermittent wheezing. The risk of RTI was determined by comparing participants with a baseline FeNO of greater than the 75th percentile (24.4 ppb) with those with a baseline FeNO at the 75th percentile or lower using Cox regression analysis. Results: The risk of RTI was significantly higher in children with an FeNO of greater than 24.4 ppb relative to those with lower FeNO values (adjusted relative risk, 3.80; 95% confidence interval, 1.74-8.22; P < .001). FeNO levels of greater than 24.4 ppb were associated with more positive skin test results to aeroallergens (P = .03) but not with other atopic characteristics or historic parameters of illness burden. Conclusions: An elevated FeNO in preschool-aged children with moderate-to-severe intermittent wheezing was associated with an increased risk of RTI during a 1-year follow-up. In addition, a higher FeNO was associated with aeroallergen sensitization.
AB - Background: The fractional concentration of exhaled nitric oxide (FeNO) is a noninvasive marker for airway inflammation but requires further study in preschool-aged children to determine its clinical relevance. Objective: To determine whether the risk of respiratory tract illnesses (RTIs), disease burden, and atopic features are related to FeNO in preschool-aged children with moderate-to-severe intermittent wheezing. Methods: We determined FeNO using the off-line tidal breathing technique in 89 children, aged 12 to 59 months, with moderate-to-severe intermittent wheezing. The risk of RTI was determined by comparing participants with a baseline FeNO of greater than the 75th percentile (24.4 ppb) with those with a baseline FeNO at the 75th percentile or lower using Cox regression analysis. Results: The risk of RTI was significantly higher in children with an FeNO of greater than 24.4 ppb relative to those with lower FeNO values (adjusted relative risk, 3.80; 95% confidence interval, 1.74-8.22; P < .001). FeNO levels of greater than 24.4 ppb were associated with more positive skin test results to aeroallergens (P = .03) but not with other atopic characteristics or historic parameters of illness burden. Conclusions: An elevated FeNO in preschool-aged children with moderate-to-severe intermittent wheezing was associated with an increased risk of RTI during a 1-year follow-up. In addition, a higher FeNO was associated with aeroallergen sensitization.
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U2 - 10.1016/S1081-1206(10)60162-7
DO - 10.1016/S1081-1206(10)60162-7
M3 - Article
VL - 103
SP - 108
EP - 113
JO - Annals of Allergy, Asthma and Immunology
JF - Annals of Allergy, Asthma and Immunology
SN - 1081-1206
IS - 2
ER -