Which class of drugs is indicated for both asthma and COPD exacerbations?

• A. Oxygen therapy
• B. Fluid replacement
• C. Beta-adrenergic agonists
• D. Antibiotics

Answer: (C)

Bronchodilators that stimulate beta-adrenergic receptors are used to quickly relieve bronchospasm in both asthma and COPD flare-ups. When these beta-2 receptors on airway smooth muscle are activated, cAMP levels rise and the muscles relax, widening the airways and reducing resistance. This rapid bronchodilation improves breathing within minutes, making this drug class the go-to choice for acute exacerbations in both conditions. In practice, inhaled short-acting beta-2 agonists like albuterol provide immediate relief and are often used alongside other therapies as needed. Oxygen helps with low oxygen levels but isn’t a bronchodilator; antibiotics may be added if an infection is suspected; fluids address other concerns and aren’t specific treatments for bronchospasm.