Sudden constriction of the airways, resulting in difficulty with breathing. May require treatment with albuterol, bagging, and may cause desaturation and bradycardia until the episode resolves. Most common in infants who have been on a ventilator for some time, or who have chronic lung disease.
Bronchospasm is a difficulty in breathing caused by a sudden constriction of the muscles in the walls of the bronchioles. It is caused by the release (degranulation) of substances from mast cells or basophils under the influence of anaphylatoxins.