Bronchodilators, or antiasthmatics are medications used to facilitate respiration by dilating the airways. They are helpful in symptomatic relief or prevention of bronchial asthma and for bronchospasm associated with COPD.
Anaphylactic shock occurs rapidly and is life-threatening. It is a systemic, type I hypersensitivity reaction that often has fatal consequences. Anaphylaxis causes the immune system to release a flood of chemicals that can cause a person to go into shock.