asthma
Conditions
Interventions
Gold Standard:Clinical presentations: follow up 1 year for any episodes and recheck the lung function.
test 
(0-3 
old): 
RR,VT,tPF,VPT,PF%T25,PEF%VT,TEF%IF, 
tI/tE, 
PTEF, 
TEF75, 
TEF50, 
TEF25
Impulse 
oscillometry 
lung 
(3-5 
Sponsors
Capital Institute of Pediatrics
Eligibility
Sex/Gender
All
Age
No minimum to 5 Years
Inclusion criteria
Inclusion criteria: 1. To obtain the reference interval of related diagnostic techniques: 1) 0-5 years old; 2) Gender ratio of 1:1; 3) Physical development normal. 2. Diagnostic test 1) 0-5 years old 2) Gender ratio of 1:1 3) Wheezing 1-3 times
Exclusion criteria
Exclusion criteria: 1. for reference interval: 1) With congenital diseases 2) With acute respiratory infection and allergic airway disease 3) With chronic respiratory diseases and metabolic diseases 2. Diagnostic test 1) With congenital diseases 2) With metabolic diseases
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| FeNO;Impulse oscillometry lung function test ;Tidal breath pulmonary function test; | — |
Countries
China
Contacts
Public ContactChuanhe Liu
Capital Institute of Pediatrics
Outcome results
None listed