what cause bronchospasms
Bronchospasm or a bronchial spasm is 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. It causes difficulty in breathing which can be very mild to severe.ronchospasm are caused by a number of reasons. Lower respiratory tract diseases such as Pneumonia, Asthma, Chronic Obstructive Pulmonary Disease (COPD), and Emphysema can result in contraction of the airways. Other causes are side effects of topical decongestants such as Oxymetazoline and Phenylephrine.