Respiratory Pharmacology Flashcards
How to treat a genetic predisposition to triggers?
Avoidance.
How to treat eosinophilic inflammation?
Anti-inflammatory, e.g. corticosteroid (prednisolone).
How to treat mediators/TH2 cytokines?
Anti-leukotriene/histamines.
Anti-IgE
Anti-IL5
How to treat twitchy smooth muscle, i.e. hyper reactivity.
Bronchodilators:
- beta 2 agonists: salbutamol
- Muscarinic antagonists: ipratropium bromide.
Describe the asthma “treatment pyramid”.
FROM BOTTOM TO TOP.
- Reliever: short acting b2-agonist, e.g. salbutamol.
- Preventer: inhaled corticosteroid, e.g. beclometasone diproprionate, Cromoglycate or montelukast.
- Controller (in + to ICS): Theophylline, LTRA, LABA/LAMA (salmeterol, Anti-IgE/Anti-IL5.
- Oral steroid.
What do you give in intermittent asthma?
SABA (e.g. salbutamol)
+ Optional: ICS/cromone/LTRA/Theophylline/anti-IgE/anti-IL5.
What would you give in mild persistent asthma?
SABA + ICS.
+ Optional: ICS/cromone/LTRA/Theophylline/anti-IgE/anti-IL5.
What would you give in moderate persistent asthma?
SABA+ ICS+ LABA /LAMA
+ Optional: ICS/cromone/LTRA/Theophylline/anti-IgE/anti-IL5.
Uses, an example and side effects of corticosteroids?
Used in asthma + COPD.
E.g. prednisolone- acute exacerbations.
Beclomethasone- maintenance monotherapy in asthma, ICS/LABA combo in COPD.
S/E: may cause pneumonia in COPD (suppresses immune system + impairs mucociliary clearance).
What are spacers used for?
Inhalers.
Avoid coordination issues.
reduces side effects, reduces systemic absorption, a holding chamber for aerosol, reduces particle size and velocity, improve slung deposition.
Uses, an example and down side of cromones?
Anti-inflammatories used only in asthma, effective in atopic children.
E.g. cromoglycate INH only.
Mast cell stabilizer. Not used often (poor efficacy)
Uses, an example and down side of LTRA (leukotriene receptor antagonists?
An anti-inflammatory used only in asthma.
E.g Montelukast (1st) oral, OD, less potent than ICs.
Effective in allergic rhinitis + anti-histamine
Uses, an example and down side of anti-IgE?
Anti-inflammatory use in severe persistent allergic asthma despite max. therapy.
E.g. omalizumab injection 2-4 weeks.,
VERY EXPENSIVE.
Reduces exacerbations.
Uses, an example and down side of anti-IL5?
Blocks eosinophilic inflammation.
E.g. mepolizumab
Expensive.
only in those not controlled by step 5.
Use, example, side effect of b2 agonists.
Stimulate b2 smooth muscle receptors ^cAMP.
Used in asthma as ICS/LABA or ICS/LABA/LAMA
SABA: salbutamol.
LABA: salmeterol/formeterol.
Combo inhalers: beclometasone/formeterol.
Tremor.