Bronchodilator Bonanza
This short-acting beta2 agonist is first-line for acute bronchospasm relief.
What is albuterol?
Rationale: Albuterol is a SABA that stimulates beta2 receptors in bronchial smooth muscle, causing rapid bronchodilation within minutes. It is the rescue inhaler for acute asthma symptoms.
First-line long-term control drugs for persistent asthma.
What are inhaled corticosteroids?
Rationale: ICS suppress airway inflammation, decrease cytokine production, reduce mucus, and prevent airway remodeling.
Common leukotriene receptor antagonist.
What is montelukast (Singulair)?
Rationale: Blocks leukotriene receptors, decreasing bronchoconstriction and mucus production in allergic asthma.
This medication class improves symptoms in COPD but does not reverse disease progression.
What are bronchodilators?
Rationale: COPD airflow limitation is largely irreversible due to structural damage.
A patient has reversible bronchoconstriction triggered by allergens. Eosinophils and mast cells release inflammatory mediators. First-line long-term therapy includes inhaled corticosteroids.
What is asthma?
Rationale: Asthma is a chronic inflammatory airway disorder characterized by reversible airflow obstruction. ICS reduce cytokine production and airway hyperresponsiveness.
This medication class causes bronchodilation by blocking parasympathetic stimulation in the airways.
What are anticholinergics?
Rationale: Blocking muscarinic receptors decreases vagal-mediated bronchoconstriction.
This inhaled corticosteroid requires mouth rinsing.
What is fluticasone?
Rationale: ICS deposit locally in the oropharynx and can cause oral candidiasis (thrush). Rinsing reduces fungal growth.
Unlike beta agonists, leukotriene modifiers do NOT provide this effect.
What is rapid bronchodilation?
Rationale: Their onset is slow; they are preventive, not rescue.
These medications are used during COPD exacerbations to decrease airway inflammation quickly.
What are systemic corticosteroids?
Rationale: Short courses improve lung function and reduce hospital stay.
A patient presents with facial pressure, purulent nasal drainage, and maxillary tenderness lasting 12 days. First-line treatment may include amoxicillin-clavulanate.
What is acute bacterial sinusitis?
Rationale: Symptoms lasting >10 days suggest bacterial etiology. Amoxicillin-clavulanate covers common pathogens like Streptococcus pneumoniae and Haemophilus influenzae.
This methylxanthine requires serum level monitoring.
What is theophylline?
Rationale: Theophylline has a narrow therapeutic range (10–20 mcg/mL). Toxicity causes tachycardia, arrhythmias, and seizures due to CNS and cardiac stimulation.
Systemic steroids increase blood glucose through this process.
What is gluconeogenesis?
Rationale: Corticosteroids stimulate hepatic glucose production and reduce peripheral glucose uptake, leading to hyperglycemia.
Blocking leukotrienes primarily reduces this pathophysiologic airway change.
What is bronchoconstriction?
Rationale: Leukotrienes are potent bronchoconstrictors and increase mucus production.
Excess oxygen may suppress this drive in COPD.
What is hypoxic drive?
Rationale: Chronic CO₂ retention shifts respiratory stimulus to low oxygen levels; high oxygen may reduce respiratory effort.
This disorder causes consolidation of alveoli with exudate, impairing gas exchange. Macrolides are often used for outpatient treatment.
What is community-acquired pneumonia (CAP)?
Rationale: In pneumonia, inflammatory exudate fills alveoli, causing ventilation-perfusion mismatch and hypoxemia.
Albuterol tremors occur due to stimulation of this receptor type.
What are beta2-adrenergic receptors?
Rationale: While primarily targeting bronchial smooth muscle, beta2 receptors also exist in skeletal muscle, causing tremors and palpitations.
Abrupt steroid withdrawal may cause this complication.
What is adrenal insufficiency?
Rationale: Long-term steroids suppress the hypothalamic–pituitary–adrenal axis. Sudden cessation prevents endogenous cortisol production.
Leukotriene modifiers are not used for this.
What is acute asthma attack?
Rationale: They do not provide rapid bronchodilation; onset is slow and used for prevention only.
Example of LABA + ICS inhaler.
What is fluticasone/salmeterol?
Rationale: Combines bronchodilation with anti-inflammatory control—standard therapy for moderate to severe COPD and asthma.
This chronic disease features alveolar wall destruction and air trapping. First-line maintenance therapy includes long-acting bronchodilators.
What is COPD (emphysema)?
Rationale: Loss of elastic recoil leads to hyperinflation and impaired gas exchange. LABAs and LAMAs improve airflow and reduce exacerbations.
This adverse effect is most concerning in older adults taking anticholinergic inhalers.
What is urinary retention?
Rationale: Anticholinergics decrease detrusor muscle contraction, worsening BPH symptoms.
Steroids primarily reduce this airway response in asthma.
What is inflammation?
Rationale: Asthma is an inflammatory disorder. Bronchospasm is secondary to mediator release; steroids target the underlying inflammatory cascade.
Leukotrienes are released from this cell type.
What are mast cells?
Rationale: IgE-mediated mast cell degranulation releases leukotrienes and histamine during allergic asthma responses.
Combination inhalers in COPD often contain a LABA plus this second bronchodilator class.
What are LAMAs (long acting muscarinic antagonists)?
Ex: Tiotropium (Spiriva)
Rationale: Dual bronchodilation improves airflow more than monotherapy.
A patient with night sweats, weight loss, and hemoptysis requires multi-drug therapy including isoniazid and rifampin.
What is tuberculosis?
Rationale: TB requires combination therapy to prevent resistance. Isoniazid inhibits mycolic acid synthesis; rifampin inhibits RNA synthesis.