Abstract

Objective To study the clinical significance of lung function and allergen detection in the diagnosis of cough variant asthma (CVA) in children. Method Forty-three cases of chronic cough in children with bronchial provocation (diastolic) test and skin prick allergy test results were analyzed, CVA group was 23 cases and control group was 20 cases. Results The positive of bronchial provocation (diastolic) test in CVA group was 19 cases, significantly higher than that in control group (3 cases, χ2=14.745, P ＜ 0.01 ).The positive of skin prick allergy test in CVA group was 17 cases , significantly higher than that in control group (5 cases, χ2 = 10.243,P ＜0.05). The correlation analysis showed that bronchial provocation (diastolic) test and skin prick allergy test was significantly correlated (r =0.404,P＜0.01 ).Conclusion Bronchial provocation (diastolic) test has an important role in the diagnosis of CVA; skin prick allergy test has a supporting role on the CVA diagnosis;allergens affect on lung function, bronchial provocation (diastolic) test with the help of skin prick allergy test in children with cough variant asthma diagnosis. Key words: Respiratory function tests; Asthma; Diagnosis; Child; Allergens

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