exercise-induced bronchospasm

(redirected from exercise-induced bronchoconstriction)
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exercise-induced bronchospasm (EIB),

bronchospasm precipitated by physical exertion.

exercise-induced asthma

A condition in which intense physical exertion results in acute airway narrowing in individuals with airway hyperreactivity.
 
Clinical findings
Cough, wheezing, dyspnoea, cough, chest tightness, hyperinflation, airflow limitation and hypoxia.
 
Pathogenesis
EIA is closely linked to thermal provocation, which occurs when large volumes of cold air are “conditioned” (heated and humidified), a scenario most common in winter. The limit of airflow is most intense with running, less so with jogging and least with walking; the obstruction is greatest with cold, dry air, and least with warm, humid air.

exercise-induced bronchospasm

Sports medicine A post-exertional event defined as a ↓ of 15% of peak expiratory flow; EIB affects up 35% of athletes and 90% of asthmatics; others at risk for EIB are blacks and those living in urban poverty areas. See Free running test.

ex·er·cise-in·duced as·thma (EIA)

, exercise-induced bronchospasm (eks'ĕr-sīz-in-dūst' az'mă, brong'kō-spazm)
Bronchial spasm, edema, and mucus secretion brought about by exercise, particularly in cool, dry environment. Recovery usually occurs spontaneously within 90 minutes. A 10-15% reduction in preexercise values for FEV1/FVC confirms diagnosis.
See also: asthma
References in periodicals archive ?
An update on exercise-induced bronchoconstriction with and without asthma.
Exercise and other indirect challenges to demonstrate asthma or exercise-induced bronchoconstriction in athletes.
Single-dose montelukast or salmeterol as protection against exercise-induced bronchoconstriction. Chest 2007;132:875-83.
Usually, the diagnosis of exercise-induced bronchoconstriction is based on a 10 percent or greater decline in forced expiratory volume in 1 second (FEV1) caused by exercise.
The guidelines define exercise-induced bronchoconstriction (EIB) as "acute airway narrowing that occurs as a result of exercise."
Airway injury as a mechanism for exercise-induced bronchoconstriction in elite athletes.
Data Source: A randomized trial of 66 children aged 6-14 years who had a history of exercise-induced bronchoconstriction or wheeze/shortness of breath with exercise.
Challenge of exercise- induced asthma and exercise-induced bronchoconstriction. Expert Rev Respir Med 2009;3:13-9.
Montelukast has been shown to have clinical efficacy in treating mild to moderate asthma and exercise-induced bronchoconstriction. Montelukast is available as a 10-mg tablet, as 4- and 5-mg chewable cherry-flavored tablets, and as a 4-mg packet of granules.
CysLT1 receptor antagonists block allergen- and exercise-induced bronchoconstriction in asthmatic subjects and acutely bronchodilate moderate to severe asthmatic subjects.

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