Pulmonary Flashcards
Airway narrowing is due to muscle spasms
-reversible
Asthma
Chronic inflammatory damage to the airways
-irreversible
COPD
What 2 things does COPD have?
Chronic bronchitis and emphysema
Inflammatory process (macrophages, neutrophils, T lymphocytes)
- increase mucus production
- obstructs the airways
Chronic bronchitis
Breakdown of elastin
-destruction of alveolar wall with dilation of the airspace
Emphysema
These bind to bronchial smooth muscles to cause contract and bind to mucous glands to increase mucus secretion
Leukotriene
These bind on smooth muscles and mucous glands and increased mucus secretion
Prostaglandins
What 3 things does contact smooth muscle cause in asthma?
- Increase mucus secretion
- Increase vascular permeability
- Increase immune cells
What are the 7 Obstructive lung disease drug classes?
ABCLLMMM Anti-IgE monoclonal antibody Beta 2 Agonists Corticosteroids Leukotriene agonist Leukotrine synthesis inhibitors Mast cell stabilizers Methylxanthines Muscarinic antagonists
Work inside immune cells to inhibit synthesis of inflammatory cytokines
Corticosteroids (synthetic glucocorticoids)
What does corticosteroids do in mast cells?
Inhibit phospholipase A2
-decr leukotrines
-decr prostaglandins
How does corticosteroids increase activity of mast cell and eosinophils?
Inhibit proliferation of Th2 cells
- decr IL4
- decr IL5
Beclomethasone Budesonide Ciclesonide Mometasone Fluticasone Triamcinolone
Inhaled corticosteriods
When is oral corticosteriods used?
Sever chronic asthma
When is IV corticosteriods used?
Acute asthma attack
Which has high risk of advert affects, inhaled or systemic corticosteriods ?
Systemic
Hydrocortisone
Prednisone
Prednisolone
Methylprednisolone
Systemic corticosteriods
Side effects of corticosteroids
Susceptibility to infections Growth retardation in children Easy bruising Hyperglycemia Weight gain
Which therapy weakens the immune response in mouth and throat and cause oropharyngreal candida infections
Inhaled therapy
Which therapy causes pituitary adrenal suppression which lessens cortisol produced?
Systemic therapy
Mast Cell Stabilizers
Nedocromil
Cromolyn
What 2 things do mast cell stabilizers do?
inhibits release of prostaglandins and leukotrines
3 facts about mast cell stabilizers?
- Mild to moderate asthma
- Administered aerosol
- Very short duration of action (rarely used now)
What kind of drugs are montekukast and zafirlukast?
Leukotriene receptor antagonists
What do leukotriene receptor antagonists do?
block leukotriene receptors in smooth muscles
- decr sm muscle contraction
- decr mucus secretion
- decr inflammation
What kind of administration is leukotriene receptor antagonists?
Oral
When is leukotriene receptor antagonists given for therapy?
Add on therapy for pts not well controlled on inhaled corticosteroids
What kind of drug is zileuton?
Leukotriene synthesis inhibitor
How does leukotriene synthesis inhibitors work?
Inhibits 5-lipoxygenase which stops synthesis of leukotrienes form arachidonic acid
How is leukotriene synthesis inhibitor administered?
Orally