MedEd Flashcards
a 59y/o female with a 30 pack year history presents with progressive SOB and a productive cough. O/E you hear an audible wheeze
a pulmonary oedema b asthma c pneumonia d idiopathic pulmonary fibrosis e COPD
COPD
a 27y/o female of afrocaribbean origin presents with SOB that has come on over the last few months. she says it is increasingly difficult to complete her morning runs. O/E you noticed tender, erythematous nodules on both of her shins
a asthma b sarcoidosis c pneumonia d idiopathic pulmonary fibrosis e pulmonary embolism
sarcoidosis
a gentleman presents with acute breathlessness. O/E his RR is 25bpm with good air entry in all fields. His ECG shows RAD.
a pneumothorax b pulmonary oedema c pneumonia d pleural effusion e pulmonary embolism
pulmonary embolism
a 62y/o male presents with an 8 month history of exertional dyspnoea & a non-productive cough
a sarcodosis b bronchogenic carcinoma c pulmonary oedema d idiopathic pulmonary fibrosis e COPD
idiopathic pulmonary fibrosis
a 70y/o woman presents with fevers, SOB, right sided pleuritic chest pain. o/e the right side of her chest shows reduced expansion & dull percussion
a pneumothorax b bronchogenic carcinoma c pneumonia d pleural effusion e pulmonary oedema
pneumonia
what is COPD
chronic obstructive pulmonary disorder
a progressive disorder of lower respiratory tract characterized by airway obstruction with little or no reversibility
1 chronic bronchitis
-cough & sputum production on most days for 3 months over 2 consecutive years
2 emphysema
-enlarge air space`s distal to terminal bronchioles
-destruction of alveolar walls
what is the difference between asthma & COPD in terms of reversibility
asthma is reversible
how would COPD be classified
1 mild -FEV1/FVC <70% -FEV1 (% predicted) >80% 2 moderate -FEV1/FVC <70% -FEV1 (% predicted) 50-80% 3 severe -FEV1/FVC <70% -FEV1 (% predicted) 30-49% 4 life threatening -FEV1/FVC <70% -FEV1 (% predicted) <30%
aetiology of COPD
1 smoking (90%) 2 occupational exposure 3 alpha-1 antitrypsin deficiency
what is A1AT
alpha-1 antitrypsin deficiency
autosomal recessive disorder
A1AT normally inhibits neutrophil elastase (a protease), a deficiency means raised levels of neutrophil elastase and increased breakdown of elastin in alveoli
what is the pathophysiology of COPD in terms of chronic bronchitis & emphysema
1 chronic bronchitis
-inflammation of bronchi
-scarring & thickening of walls
-increased mucus production
-small airway narrowing
2 emphysema
-proteases breakdown connective tissue of alveolar walls & septae
-loss of lung recoil due to breakdown of elastin
-limited expiratory flow & air trapping
why do COPD patients have a hyperinflated chest
due to emphysema (loss of lung recoil causing limited expiratory flow & air trapping) there is an increased total lung capacity
symptoms of COPD
productive cough
wheeze
SOB
symptoms of infective exacerbation of COPD
worsening SOB
increased sputum/change in sputum colour
signs of COPD
polyphonic wheeze
signs of severe COPD
tachypnoeic
prolonged expiratory phase (to blow off CO2)
accessory muscle use
pursing of lips on expiration ( to blow off CO2)
hyperinflation & hyper-resonance
signs of hypercapnia
what are the signs of hypercapnia
vasodilation
bounding pulse
asterixis
def of sarcoidosis
multisystem granulomatous disorder of unknown cause
epi of sarcoidosis
more common in african americans
more common in women
20-40yrs
clinical findings of sarcoidosis
1 CXR -bilateral hilar lymphadenopathy 2 systemic -fever 3 pulmonary -dry cough -progressive SOB -reduced exercise tolerance 4 extra-pulmonary -erythema nodosum (legs)
investigations in suspected sarcoidosis
1 Lung function tests
-restrictive (FEV1/FVC is 80-85%)
2 CXR
-bilateral hilar lymphadenopathy
3 decreased CO diffusion capacity test (DLCO)
4 bronchoscopy & biopsy
-non-caseating granulomas (bacteria -ve) is diagnostic
what is the diagnostic investigations for sarcoidosis
bronchoscopy & biopsy
-non-caseating granulomas (bacteria -ve)
management of sarcoidosis
NSAIDs for flare ups
corticosteroids for severe sarcoidosis of extrapulmonary disease
def of PE
sudden occlusion in pulmonary artery or one of its branches