Beta-2 adrenergic agonist

Definition

Beta-2 adrenergic agonists are medications that stimulate beta-2 receptors in the lungs, leading to bronchodilation. They are commonly used to treat conditions like asthma and chronic obstructive pulmonary disease (COPD).

5 Must Know Facts For Your Next Test

1. Beta-2 adrenergic agonists can be short-acting (SABA) or long-acting (LABA) based on their duration of action.
2. Common side effects include tachycardia, tremors, and nervousness.
3. These drugs work by relaxing the smooth muscles in the airways, making it easier to breathe.
4. LABAs are often prescribed alongside inhaled corticosteroids for long-term asthma control.
5. Overuse of SABA can lead to reduced effectiveness and worsening asthma symptoms.

Review Questions

• What is the primary mechanism of action for beta-2 adrenergic agonists?
• Name two common side effects associated with beta-2 adrenergic agonists.
• Why should LABAs be used in combination with inhaled corticosteroids?

Related terms

Anticholinergics:

Medications that block acetylcholine receptors, leading to bronchodilation.

Asthma:

A chronic respiratory condition characterized by airway inflammation and hyperreactivity.

COPD:

Chronic Obstructive Pulmonary Disease, a group of lung conditions that cause breathing difficulties.