Which medication is classified as a SABA and is used for asthma management?

Levalbuterol is the medication classified as a short-acting beta-agonist (SABA) and is commonly used in the management of asthma. SABAs are bronchodilators that work by stimulating the beta-2 adrenergic receptors in the airway smooth muscle, leading to relaxation and dilation of the bronchial passages, which helps alleviate symptoms of asthma such as wheezing and shortness of breath.

Levalbuterol is known for its relatively selective action on the beta-2 receptors compared to some other SABA medications, which may lead to fewer side effects and improved tolerability in some patients. It is particularly advantageous for patients who may experience increased heart rate or jitters with other bronchodilators.

Other medications listed are not classified as SABAs. Metaproterenol and pirbuterol are also SABAs, but they did not receive the correct designation based on the response for this question; however, dexamethasone is a corticosteroid used for its anti-inflammatory effects and is not classified as a bronchodilator. Recognizing the specific action and classification of medications is crucial in asthma management, as it helps practitioners choose the most appropriate therapy based on the patient's needs.