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WorksheetsIntroduction to Respiratory Drugs
Total questions: 15
Worksheet time: 8mins
Pulmonary vasodilators mainly target which vascular bed to improve gas exchange?
Systemic arteries
Pulmonary circulation
Coronary vessels
Cerebral arteries
Which pair correctly matches class to core mechanism?
Bronchodilators—phosphodiesterase inhibition
Mucolytics—beta-2 receptor activation
Corticosteroids—acetylcholine release
Respiratory stimulants—mucus depolymerization
A patient with thick tenacious sputum needs improved clearance. Which class fits best?
Respiratory stimulants
Mucolytic agents
Pulmonary vasodilators
Corticosteroids
Which class is most appropriate to quickly relieve acute bronchospasm?
Corticosteroids
Bronchodilators
Mucolytic agents
Pulmonary vasodilators
Which drug class would most likely improve mucus clearance in chronic bronchitis?
Bronchodilators
Pulmonary vasodilators
Respiratory stimulants
Mucolytic agents
Doxapram most characteristically produces which physiological change when given at appropriate doses?
No change in ventilation but improved oxygen binding
Marked vasoconstriction causing blood pressure fall
Increased tidal volume with slight rise in rate
Reduced tidal volume with slower respiratory rate
Select the most appropriate clinical scenario for using a respiratory stimulant.
Hypertension needing rapid blood pressure reduction
Chronic stable angina with normal ventilation
Post-analgesic respiratory depression after opioids
Acute asthma requiring bronchodilation therapy
Which statement best describes doxapram’s elimination profile?
It is excreted from the body rapidly
It is eliminated slowly due to protein binding
It accumulates extensively over several days
It persists because of active hepatic recycling
Select the clinical scenario most appropriate for doxapram use.
Chronic stable asthma well controlled
Bacterial pneumonia responding to antibiotics
Mild seasonal rhinitis without dyspnea
Acute respiratory failure requiring stimulation
A patient receiving doxapram develops restlessness, headache, and hypertension. Which adverse effect profile aligns with this presentation?
Isolated renal toxicity without symptoms
Predominantly cholinergic inhibition signs
Profound respiratory depression features
Neurologic and cardiovascular excitatory effects
Which list correctly identifies the three main classes of bronchodilators used in obstructive lung disease?
Antihistamines, opioids, vasodilators
Leukotriene antagonists, NSAIDs, diuretics
α1-blockers, corticosteroids, mucolytics
β2-agonists, anticholinergics, methylxanthines
Which statement best describes the primary bronchodilatory mechanism of anticholinergic agents in severe respiratory exacerbations?
Directly stabilizing mast cells to reduce mediators
Inhibiting phosphodiesterase to raise cAMP levels
Enhancing β2-adrenoceptor signaling in bronchioles
Blocking muscarinic receptors on airway smooth muscle
Which methylxanthine property most plausibly contributes to immunomodulatory effects during severe exacerbations?
Alpha-adrenergic stimulation increasing mucus viscosity
Phosphodiesterase inhibition altering cytokine signaling
Sodium channel blockade reducing neural transmission
Calcium influx promotion increasing smooth muscle tone
Which statement best differentiates inhaled from oral corticosteroids in COPD management?
Oral agents act faster than beta2-agonists
Inhaled agents improve FEV1 and PaO2
Oral agents only reduce sputum viscosity
Inhaled agents primarily treat bacterial infection
For refractory COPD exacerbation not responding to bronchodilators, which methylxanthine effect supports its use?
Suppresses neutrophils and cytokine production
Causes dry mouth and altered taste
Blocks vagal impulses causing dilation
Improves PaO2 via inhaled delivery
