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A specifically induced bronchoconstriction by distilled water in children and adults
Insights
Nebulized distilled water can induce bronchoconstriction, particularly in children with asthma. This method effectively assesses bronchial lability in respiratory function testing.
Area of Science:
- Pulmonology
- Pediatric Respiratory Medicine
- Clinical Physiology
Background:
- Assessing bronchial hyperresponsiveness is crucial for diagnosing and managing respiratory conditions.
- Nebulized distilled water has been explored as a provocative agent for inducing bronchoconstriction.
Purpose of the Study:
- To evaluate the effect of nebulized distilled water on respiratory function in various pediatric and adult groups.
- To determine if nebulized distilled water can reliably induce bronchoconstriction and assess bronchial lability.
Main Methods:
- Respiratory function tests, including FVC, FEV1, FMF, and FEF200-1200, were performed before and after nebulized distilled water inhalation.
- Sixty-eight subjects were divided into five groups: healthy children, children with asthma, children with cystic fibrosis, children with other respiratory diseases, and healthy adults.
Main Results:
- Statistically significant changes in respiratory function were observed exclusively in the group of children with asthma.
- No significant changes were noted in healthy children, children with cystic fibrosis, other respiratory disease groups, or healthy adults.
Conclusions:
- Nebulized distilled water serves as an effective agent for inducing bronchoconstriction.
- This method is a valuable tool for assessing bronchial lability, especially in pediatric asthma evaluations.
Abstract:
Respiratory function (FVC, FEV1, FMF and FEF200-1200) was measured before and after nebulized distilled water in 68 subjects divided in the five following groups: a) 21 healthy children (age range 7 to 15 years); b) 10 children with asthma (age range 6 to 11 years); c) 10 children with cystic fibrosis (age from 5 to 15 years); d) 7 children with different diseases of the respiratory system (age range from 6 to 11 years); e) 20 healthy adults (aged from 18 to 33 years). The only statistically significant changes were noted in the asthmatic children group. We conclude that a specifically induced bronchoconstriction by nebulized distilled water is a good mean of assessing bronchial lability.