1. A 58-year-old male with a history of chronic obstructive pulmonary disease (COPD) is prescribed a short-acting beta2 agonist for relief of dyspnea. Which of the following is a potential side effect of this medication? A. Bradycardia B. Tachycardia C. Hypotension D. Dry mouth Answer: B. Tachycardia Rationale: Short-acting beta2 agonists can cause tachycardia as they stimulate the beta2 receptors in the heart, leading to increased heart rate. 2. A patient is diagnosed with pulmonary arterial hypertension and started on therapy with an endothelin receptor antagonist. Which of the following monitoring parameters is most important for this patient? A. Serum potassium levels B. Liver function tests C. Thyroid function tests D. Complete blood count Answer: B. Liver function tests Rationale: Endothelin receptor antagonists can cause hepatotoxicity, hence monitoring liver function tests is crucial to detect any early signs of liver damage. 3. A 65-year-old female with asthma is prescribed an inhaled corticosteroid. What is the primary mechanism of action of this class of drugs in asthma management? A. Relaxation of bronchial smooth muscle B. Inhibition of inflammatory cell migration C. Stimulation of mucociliary clearance D. Increase in respiratory drive Answer: B. Inhibition of inflammatory cell migration Rationale: Inhaled corticosteroids work by reducing inflammation in the airways by inhibiting the migration of inflammatory cells to the site of inflammation. 4. A patient with acute exacerbation of asthma is given a nebulized short-