Respiratory Flashcards
What is the biggest cause of COPD?
Smoking
What three cells are involved in the pathophysiology of COPD?
1) Neutrophils
2) CD8 T cells
3) Macrophages
What are the effects of COPD on the airways?
1) Peripheral airway damage
2) Lung destruction
3) Fibrosis
4) Squamous metaplasia
What are the main symptoms of COPD?
1) Cough
2) Shortness of breath
3) Weight loss
What are 5 of the signs of COPD?
1) Hyperextension/barrel chest
2) Cyanosis
3) Cor pulmonale
4) Wheeze
5) Raised respiratory weight
What is the main test used to diagnose COPD?
Spirometry
What findings will be found from spirometry with COPD?
1) Obstructive
2) FEV1/FVC ratio <0.7
3) Reduced FEV1
What is the main form of treatment COPD?
Smoking cessation
What pharmacological treatments are there for COPD? Name 5 types
1) Beta-2-agonists
2) Anticholinergics
3) Methylxanthines
4) Inhaled corticosteroids
5) Phosphodiesterase-4 inhibitors
What is the oxygen saturation target for COPD in exacerbations?
88-92%
What is done for the management of COPD exacerbations?
1) Oxygen
2) Bronchodilators
3) Systemic corticosteroids
4) Antibiotics
Name 4 factors that increase the risk of asthma
1) Family history
2) Another atopic condition
3) Exposure to smoke as a child
4) Premature birth or low birth weight
What happens to the airways in asthma?
The smooth muscle undergoes excessive contraction with hypertrophy and proliferation - narrowing airways
Asthma has two main types - Eosinophilic and non-eosinophilic. What are the catagorises of non-eosinophilic asthma?
1) Non-smoking
2) Smoking-related
3) Obesity-related
What is the spirometry finding of asthma?
1) Reduced FEV1
2) Reduced FEV1/FVC ratio
What are the diagnostic findings of the peak flow test?
1) Reduced
2) >20% variability in 3/5 days
What are the two main classes of treatment for asthma?
1) Bronchodilators
2) Anti-inflammatory drugs
What is the most common type of Hypersensitivity pneumonitis?
Farmer’s lung
Outline the pathology of hypersensitivity pneumonitis
1) Allergic response - cellular immunity and deposition of immune complexes
2) Immune complexes attract and activate - alveolar and interstitial macrophages leading to fibrosis
State 4 symptoms of Hypersensitivity pneumonitis
1) Malaise
2) Dyspnoea
3) Cough
4) Weight loss
State 2 signs of hypersensitivity pneumonitis?
1) Auscultation - inspiratory squeaks
2) Bilateral crackles
What is the treatment of hypersensitivity pneumonitis?
1) Avoid exposure
2) Prednisolone for persisting symptoms
What would be seen on a HRCT of bronchiectasis?
1) Air trapping
2) Nodules
3) Honeycomb shape
4) Reticulation change
What happens to the airways in bronchiectasis?
They are abnormal and permanently dilated