Asthma Treatments Flashcards
What are symptoms of asthma?
Wheezing
Shortness of breAth
Tightness of chest
Worse at night
What are the risk factors for asthma?
Food allergies Family history Early exposure to smoke Child hood - adult Occupational
What are the triggers for asthma?
Exposure to allergen Cold air exercise Pollutants Emotion Drugs ( aspirin b blockers)
What are the long term aims of asthma therapy?
Abolish symptoms
Maintain optimal lung function
Prevent death from acute attack
Avoid side effects
What are the two types of asthma treatments?
Name some egs?
Relievers ( bronchioles dilators) Salbutamol Salmeterol Ipratropium Theophylline Preventers anti inflammatory Beclometasone Montelukst Sodium cromoglicate
Relievers act on which receptors?
A2 b2
Salbutamol has a similar structure to which nt ?
What will this cause?
Adrenaline
It’s a b2 selective agonist causes smooth muscle relaxation
What are the side effects of relievers?
Tremor
Increased HR ( if dose high enough will bind to b1 receptors which will increase HR)
Nervous tension headache
Hypocalcaemia
What are the different methods of taking relievers drugs?
Inhaler metered dose - coordinator is an issue
Spacer - spray drug into device and then breath in
Why are steroids used in the prevention or treatment of asthma?
It reduces inflammation which reduces mucus secretion, oedema, damaged airways
Glucocorticoid are given to prevent asthma attacks for eg beclometasone how long after starting treatment will symptoms improve ?
3-7 days
What is the advantage of using combination inhalers?
Give an eg ?
It does both maintenance and relief and it means don’t need to carry 2
Eg symbicort
Explain the mechanism of steroids?
The bind with receptors Then combine with another complex Then crosses nucleus membrane Steroid then either switches on gene Which increases mRNA Increases protein production or the opposite
What are the unwanted effects of steroids?
Oral thrush or infection to vocal cords
What is the treatment for acute asthma attacks
Oral steroids, prednisolone
, short high dose for 7 days