Muniza Saeed, Shahnaz Javed Khan, Shahnaz javed Khan.
Post-Exercise Pulmonary Function Tests in normal & Asthmatic Children.
Ann King Edward Med Uni Jan ;9(2):105-7.

The present study was performed on forty children with bronchial asthma and forty normal school children in the age range of 10-16 years, to evaluate bronchial spasm induced by standardized exercise stress challenge. Six minutes exercise on bicycle ergometer was done. Pulmonary function tests were recorded before exercise and 5 minutes after exercise. Forced expiratory flow rates (FEV, PEF, MMEF and MEF50) decreased and static lung volumes (FRC) increased after exercise in asthmatics. Bronchial hyper-reactivity which is considered a fundamental element in the patient with bronchial asthma manifested itself in both the large and small airways. The high correlation (r=0.86) of pre- and post-exercise FEV1 indicates it as a more reliable test to measure bronchial obstruction induced by exercise. We conclude that a screening program for childhood asthma with exercise challenge can help to identify undiagnosed cases.

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