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Medical Pharmacology of Respiratory Pathology
A medical student approach to drugs affecting the respiratory system
19
Medical
Undergraduate 3
10/03/2013

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Cards

Term
List three common respiratory symptoms?
Definition
SOB, cough, wheeze, chest pain, hemoptysis
Term
Asthma vs COPD
Definition
recurrent reversible airway obstruction (with wheeze, SOB)
chronic, gradual, irreversible airway obstruction
Term
Two phases of asthma
Definition
Early phase bronchspasm, at inhalation or stimulus (mast cell histamine, leukotrienes and prostaglandins
Late phase inflammation ((influx of Th2 lymphocytes)
Term
Two classes of asthma drugs?
Definition
Bronchodilators (B2 agonists and anticholinergics) immediate
Anti-inflammatory (steroids) late stage
Term
WHen should a corticosteroid be added?
Definition
When mild asthma can no longer be controlled with once daily short acting B agonist.
Term
Salmeterol/Formoterol
Definition
Long acting B agonist, minimises need for increasing corticosteroids. 8-12 duration
Term
Salbutamol/Terbutaline
Definition
First line, short acting B agonist, antagonise spasmodic effects, via inhalation,3-5 duration (can be given IV infusion for status asthmaticus.
Term
Aminophylline
Definition
theophylline class, steroid sparing, inhibit phosphodiesterase, narrow therapeutic index AE --> cardiac dysrhythmia, seizures, GI ++interactions, liver metabolism. oral (or IV in SA)
Term
Montelukast
Definition
leukotriene antagonist, third line, only as add on therapy.
Term
AEs of beta agonists
Definition
tremour, tachycardia and dysrhythmia
Term
Ipratroprium/Tiotropium
Definition
Muscarinic receptor anatgonists. maintenance of COPD. 3-5 hours (tia is longer) 30 minute max. few unwanted affects.can be used in combo.
Term
Corticosteroid action?
Definition
Inhibition of allergic response (PGE2 PGI2, IL, GCS factor) and upregulation of B2 rceeptors.
Term
Beclometasone
Definition
regular inhaltaion of glucocorticoids
Term
Budesonide
Definition
Indicated in more severely affected patients
Term
Hydrocortisone / oral prenisolone
Definition
indicated in acute exacerbation or as a rescue course
Term
Status asthmaticus
Definition
Acute therapy:
Oxygen
Salbutamol
IV hydrocortisone
Oral prednisolone
Term
Systemic AEs glucocorticoids
Definition
oral thrush and voice problems
Term
anaphylaxis
Definition
acute airway obstruction emergency: adrenalin IM, oxygen, antihistamine and hydrocortisone.
Term
Cough suppression (antitussis drugs)
Definition
opioid analgesics! codeine and morphine, be wary of respiratory depression and constipation
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