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difficulty with the expiratory phase of breathing, often due to obstruction in the larynx or large bronchi, such as are caused by a foreign body.
Dyspnea associated with obstructive lung diseases such as asthma or chronic bronchitis. Wheezing is often present.
See also: dyspnea
labored or difficult breathing; a sign of a variety of disorders and is primarily an indication of inadequate ventilation, or of insufficient amounts of oxygen in the circulating blood.
the dyspnea is primary during the expiratory phase of respiration. Usually associated with lower airway obstruction.
the dyspnea is primarily during the inspiratory phase of respiration. Usually associated with upper airway obstructions and sometimes disorders of the pleura.