Mechanism
How Salmeterol works
Selectively stimulates beta-2 adrenergic receptors causing prolonged bronchodilation through increased intracellular cAMP.
← Respiratory Pharmacology
LABANBRC High Yield5/5 Importance
Salmeterol Respiratory Pharmacology Guide
Class, mechanism, indications, adverse effects, kinetics, exam traps, and NBRC-style study pearls.
Salmeterol is a long-acting beta agonist that provides prolonged bronchodilation for maintenance treatment of asthma and COPD. Unlike albuterol, salmeterol should not be used for immediate relief of acute bronchospasm. Students commonly confuse LABAs and SABAs, making this a frequent examination topic.
Clinical Pearl
What to remember
The classic NBRC trap is selecting salmeterol during an acute asthma attack.
Kinetics
Onset, peak, and duration
1
Onset
About 20 minutes
2
Peak
2 to 4 hours
3
Duration
Approximately 12 hours
Quick facts
- Subclass
- LABA
- NBRC importance
- 5/5
- Difficulty
- 2/5
- Brands
- Serevent
Common indications
- Maintenance treatment of asthma
- Maintenance treatment of COPD
- Prevention of exercise-induced bronchospasm
Adverse effects
- Tachycardia
- Palpitations
- Tremor
- Headache
- Nervousness
- Hypokalemia
Contraindications
- Hypersensitivity to salmeterol or formulation components
Cautions and safety issues
- Not for acute bronchospasm
- Not a rescue inhaler
- Use caution in cardiovascular disease
- Use caution with tachyarrhythmias
NBRC-style question
NBRC-style pharmacology review
A patient scenario involves stable copd patient requiring maintenance bronchodilation. Which medication concept should the respiratory therapy student recognize?
High-yield answer
LABA = Long acting, not rescue
Interactive practice
Practice in PharmaGenius
Master this medication through adaptive review of class, mechanism, indications, adverse effects, exam traps, and clinical scenarios. Missed concepts can later be surfaced for targeted remediation.
ClassPractice
MechanismPractice
Clinical usePractice
Adverse effectsPractice
ScenarioPractice
Common Exam Traps
These are the answer choices, mechanisms, or medication classes most commonly confused with this medication on RT school and NBRC-style exams.
- Short-acting beta agonist
- Rescue inhaler
- Muscarinic antagonist
- Inhaled corticosteroid
- Used for acute asthma attack
High-Yield Clinical Scenarios
- Stable COPD patient requiring maintenance bronchodilation
- Asthma patient needing long-term control
- Question comparing LABA versus SABA therapy
Related study paths
Continue building pharmacology mastery
Use this medication page as a reference, then reinforce it with interactive practice and related PulmTools study resources.