Exercise induced bronchoconstriction in Nigerian asthmatics.
This study describes the result of free-running exercise performed on 40 asthmatic subjects and 40 age and sex matched controls. A percentage fall of more than 15% in PEFR was used for the diagnosis of exercise-induced asthma (EIA). 77.5% of our asthmatic patients had exercise-induced bronchoconstriction (EIB) while none of the control subjects exhibited EIB. Twenty-seven patients gave positive history of EIA out of which 25 (92.59%) had positive exercise testing. Conversely, 13 patients with asthma did not give history of EIA but 6 of this (46.15%) were found to have EIB on exercise. History alone is therefore insufficient to diagnose patients with exercise-induced asthma.
Department of Medicine, Obafemi Awolowo University Teaching Hospital, Ile-Ife, Nigeria.
G E
GE
Erhabor
A A
AA
Awotedu
M O
MO
Balogun
D000293:Adolescent; D000328:Adult; D001250:Asthma, Exercise-Induced / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology / Q000503:physiopathology; D016022:Case-Control Studies; D002648:Child; D003251:Constriction, Pathologic / Q000453:epidemiology / Q000209:etiology; D005080:Exercise Test / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D016555:Matched-Pair Analysis; D008487:Medical History Taking; D008875:Middle Aged; D009549:Nigeria / Q000453:epidemiology; D010366:Peak Expiratory Flow Rate; D015995:Prevalence; D012420:Running