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پاورپوینت در مورد Ashtma

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پاورپوینت در مورد Ashtma

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Asthma

airflow obstruction that varies markedly , both spontaneously and with treatment.

i nflammation in the airways that makes them more responsive than nonasthmatics to a wide range of triggers

excessive narrowing with consequent reduced airflow and symptomatic wheezing and dyspnea.

Prevalence

10–12% of adults and 15% of children

Asthma can present at any age, with a peak age of 3 years.

In childhood, twice as many males as females are asthmatic, but by adulthood the sex ratio has equalized

many with asthma become asymptomatic during adolescence but that asthma returns in some during adult life, particularly in those with persistent symptoms and severe asthma

Adults with asthma, including those with onset during adulthood, rarely become permanently asymptomatic

DEFINITION

Asthma is a chronic inflammatory disorder of the airways

In susceptible individuals, inflammation causes recurrent episodes of wheezing, breathlessness, chest tightness, and coughing , particularly at night or in the early morning

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