Respiratory Flashcards
(155 cards)
What is asthma
Chronic airway inflammation that causes episodic exacerbations of bronchoconstriction
What is asthma charecterised by
- Reversible airflow limitations
- Airway Hyper-responsiveness
- Brobchial inflammation
What are the 2 groups os asthma
- Eosinophillic
- Non eosinophillic
What are the 2 types of eosinophillic asthma
Atopic
- Fungal allergy
- Common aeroallergens
- Occupational
- Pets
Non - atopic
What are the 3 types on non-eosionophillic asthma
- Non smoking non eosinophillic
- Smoking assosciated
- Obesity related
What are triggers for asthma
- Infection
- Cold air
- Animals
- Excercise
- Cold/damp
Asthma presentation - Sx
- Dry cough
- Wheeze
- S.O.B
- Chest tightness
Asthma presentation - signs
- Bilateral polyphonic wheeze
- Prolonged expiratory time
- Hyperinflated chest
- Diurinal variability -worse at night
Asthma investigations
1st -
Spirometry -with reversibility
Peak air flow - 2x per day
CXR - hyperinflation in acute attack
Asthma conservative management
- Avoid smoking and allergens
- Loose weight
- Avoid triggers (NSAIDs)
- Yearly asthma review
- Yearly influenza vaccination
Asthma Medical management
1 - SABA (Salbutamol)
2 - SABA + ICS
(Budoneside)
3 - SABA + ICS + LABA
(Salmeterol)
Function of beta agonists
- Bind to B2 receptor on lungs
- Increase CAMP
- Relaxation
- Bronchodilation
Similar to adrenaline and noradrenaline
What is bronchiectasis
Permanent dilatation of bronchi and bronchioles due to destruction of elastic and muscualr comonenets of bronchial wall
What are the causes of bronchiectasis
Recurrent infections secondary to underlying conditions
Bronchial damage
- Pneumonia
- WHooping cough
Cystic fibrosis
Bronchiectasis presnetation - Sx
Cough
- Green purulent sputum
- Intermitent haemoptysis
Breathlesness
Wheeze
Fatigue
Bronchiectasis presentation - signs
- Clubbing
- Bilateral coarse crackles
- High pitch inspiratory wheeze
Bronchiectasis investigations - Gold standard
HRCT
- Airway dialtation
- Bronchial wall thickening
- Bronchial wall cysts
Bronchiectasis investigations
CXR
- Cystic shadows
- Thickened bronchial walls
Sputum culture
Spirometry
- Obstructive pattern
Bronchiectasis management
Mucolytics - Dornase aplha
Respiratory physio
Antibiotics
Pneumococcal and Flu vaccination
What is COPD
Non reversible long term deterioration in airflow through the lungs caused by damage to lung tissue
What is COPD charecterised by?
Airway obstruction
Airway limitation
COPD causes
- Smoking ( > 20 pack years)
- Chrnoic exposure to pollutants
- Alpha 1 antitrypsin deficiency
What is chronic bronchitis
Cough with sputum for 3 months for 2 consecutive years
Pathophysiology of chronic bronchitis
- underlying inflammation
- Mucous hypersecretion
- Inflammatory oedema
- Scarring and thickening
- Airway narrows