Answer :
Alter smooth muscle tone, Reduce airway obstruction, Increase oxygen distribution - are the bronchodilator actions that relieve bronchospasm.
Bronchodilators are a type of drug that makes breathing easier by relaxing the muscles in the lungs and widening the airways (bronchial tubes).
These are commonly used to treat long-term conditions that can narrow and inflame the airways. Examples:
- Asthma, a common lung disease caused by inflammation of the airways.
- chronic obstructive pulmonary disease (COPD), a group of lung conditions, usually caused by smoking, that make breathing difficult
A bronchodilator is one of the following:
- short-acting - used for short-term relief of unexpected and sudden bouts of breathlessness
- long-acting - to control shortness of breath in asthma and COPD and increase the efficacy of corticosteroids in asthma
Bronchospasm occurs when: The muscles lining the bronchi (airways in the lungs) become tense. This causes wheezing, coughing, and other symptoms. Many things, including asthma, can cause bronchospasm and are usually treated with bronchodilators.
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