Chronic SOB Flashcards
Define asthma
Asthma is a chronic inflammatory airway disease characterised by intermittent airway obstruction and hyper-reactivity
Patient history of asthma (7)
Recurrent episodes
Variation (worst in morning & evening)
History of atopy
Family History
Smoker
Occupation
Pets
S/s of asthma (3)
Cough
Wheeze
SOB
What should be heard on auscultation of an asthmatic
Wheeze
Ix for asthma and diagnostic criteria
Spirometry - FEV1: FVC <70%
PEFR - PEFR varies by, or increases by >20%, for >3 days/week over several weeks - diagnosis can be aided by a PEFR diary
What is the Mx of asthma
In order: SABA SABA+ICS SABA+ICA+LTRA LABA+ICS±LTRA LABA+↑ICS±LTRA
Which SABA is used for asthma
Salbutamol
Which ICS are used for asthma (2)
Beclometasone, Budesonide
Which LTRA is used for asthma
Montelukast
Which LABA+ICS is used for asthma
Symbicort (Budesonide/Formoterol)
Which Oral CS is used for asthma
Prednisolone
What type of drug is salbutamol
Short acting beta2 agonist
What type of drug is beclometasone
ICS
What type of drug is budesonide
ICS
What type of drug is montelukast
Leukotriene receptor antagonist
What type of drug is symbicort
Long acting beta agonist budesonide and ICS formorterol
What type of drug is prednisolone
Oral CS
Which drugs are in Symbicort
Budesonide/Formoterol
What are the criteria for acute severe asthma
PEF - 33-50% best or predicted
RR - >25/min
HR - >110min
Inability to complete sentences in one breath
What are the criteria for life threatening asthma
PEF - <33% best or predicted
SpO2 - <92%
PaO2 - <8kPa
Normal - PaCO2
Quick way to distinguish moderate, acute severe, life threatening and near fatal asthma?
PEF 50-75% PEF 33-50% PEF <33% pCO2 Raised
Mx acute asthma
O2
Neb. salbutamol 5mg
Neb ipatropium bromide 0.5mg if acute-severe or life-threatening asthma with poor response to salbutamol
Oral prenisolone 40-50mg or IV hydrocortisone 100 100mg
IV MgSO4 + senior help
IV aminophylline
ITU + intubation
History of someone with COPD (4)
Age
FHx
Smoking status
Occupation
Presenting complaints of COPD (3)
SOB
Productive cough
Some wheeze
What is heard on auscultation of COPD (3)
Reduced air movement
Wheezing
Coarse crackles (hair-like crackles)
What is seen on general inspection of COPD (3)
Tar staining
Cyanosis
Barrel chest
What is felt on palpation of COPD (2)
Reduced expansion
Hyper-resonance (on percussion)
Does COPD cause clubbing
No
What are the cut offs for different severities of COPD
> 80% Mild 50-79% Moderate 30-49% Severe < 30% Very severe
Ix for COPD and why (5)
Serial peak flow measurements
To exclude asthma if diagnostic doubt remains
Alpha-1 antitrypsin (A1AT)
If early onset, minimal smoking history or family history
Transfer factor for carbon monoxide (TLCO)
To investigate symptoms that seem disproportionate to spirometric impairment
CT scan of the thorax
To investigate abnormalities seen on a chest radiograph
To assess suitability for surgery
ECG or Echocardiogram
To assess cardiac status if features of cor pulmonale
Mx of COPD
In order:
Make sure to have vaccines and stuff
SABA or SAMA
SABA + LABA or
SAMA and LAMA
LABA + LAMA or
LABA + ICS if asthmatic features
LAMA+LABA+ICS
What type of drug is ipratropium bromide
Short-acting muscarinic antagonis
Example of a short-acting muscarinic antagonist
Ipratropium bromide
What type of drug is salmeterol
Long-acting beta antagonist
What type of drug is tiotropium bromide
Long-acting muscarinic antagonist
Example of a long-acting muscarinic antagonist
Tiotropium bromide
Example of a long-acting beta antagonist
Salmeterol
Indication for O2 therapy Iin COPD
pO2 of 7.3 - 8 kPa and one of the following: Secondary polycythaemia Nocturnal hypoxaemia Peripheral oedema Pulmonary hypertension
or
pO2 of < 7.3 kPa
Mx for acute IE of COPD
(Blue Venturi) 24% O2
Neb Salbutamol 5mg
Neb Ipatropium bromide 0.5mg
Oral prednisolone 40-50mg
IV hydrocortisone 200mg
500mg IV aminophylline
BiPAP
What is the indication for BiPAP
T2 respiratory failure (e.g. COPD)
What is the indication for CPAP
T1 respiratory failure (e.g. sleep apnoea)
or atelectasis
Define ILD
Interstitial lung disease (ILD) is an umbrella term for a large group of disorders that cause scarring (fibrosis) of the lungs. The scarring causes stiffness in the lungs which makes it difficult to breathe
What are the 4 causes of ILD
Idiopathic Pulmonary Fibrosis
Hypersensitivity Pneumonitis / EAA
Sarcoidosis
Pneumoconiosis
Common patient history for IPF (4)
Animal/vegetable dusts
Smoking status
Occupation
Drugs
Bleomycin
Methotrexate
Amiodarone
Which drugs cause IPF (3)
Drugs
Bleomycin
Methotrexate
Amiodarone
Main presenting complaints (2) and one thing not in the PC of IPF
SOBOE
Dry cough
No wheeze
Main sign on general inspection of IPF
Clubbing
Main sign on auscultation of IPF
Bi-basal, fine, inspiratory crepitations
Ix for IPF (6)
Biopsy is diagnostic but CT is usually most appropriate
Bloods, ABG, BIOPSY
CXR – ground-glass, reticulonodular, cor pulmonale, honeycombing
High-resolution CT - ground-glass
Lung function tests (restrictive pattern)
What pattern is seen in lung FT of IPF
Restrictive
What is seen in CXR (4) and CT in IPF
CXR – ground-glass, reticulonodular, cor pulmonale, honeycombing
CT - ground glass
History of hypersensitivity pneumonitis (2)
Keep pets
Occupation Pick mushrooms Bird-keeper Farmer Plumber Malt-worker
PC of hypersensitivity pneumonitis (3)
SOBOE
Dry cough
Fever
General inspection features of EAA (2)
Clubbing (rare)
Mild pyrexia*
Auscultation features of EAA
Bi-basal, fine, inspiratory crepitations
Ix for EAA (4)
Bloods, ABG
CXR – often normal*
High-resolution CT - ground-glass
Lung function tests (restrictive pattern)
Broncho-alveolar lavage – increased cellularity
History of pneumoconiosis (3)
Occupation
Coal-worker
Builder
Long latency
Asymptomatic
PC of pneumoconiosis
SOB
Dry cough
What can pneumoconiosis be divided into
Asbestosis - builder
Silicosis - coal - worker
Auscultation features of asbestosis (2)
Bi-basal, inspiratory crepitations
Auscultation features of silicosis (2)
Decreased breath sounds
General inspection signs of asbestosis
Clubbing
General inspection signs of silicosis
None
Ix and results of pneumoconiosis (3)
CXR:
Simple = micro-nodular mottling
Complicated = bilateral lower zone reticulonodular shadowing and pleural plaques (asbestosis is fibrotic changes, not just plaques)*
CT – fibrotic changes
Lung function tests (restrictive pattern)
What is seen in the CXR of simple pneumoconiosis
Simple = micro-nodular mottling
What is seen in the CXR of complicated pneumoconiosis
Complicated = bilateral lower zone reticulonodular shadowing and pleural plaques (asbestosis is fibrotic changes, not just plaques)*
What is seen in the CT of pneumoconiosis
Fibrotic changes
What pattern is seen in the lung FT of pneumoconiosis
Restrictive
Define sleep apnoea
Characterised by recurrent collapse of pharyngeal airway and apnoea (cessation of airflow for >10s) during sleep; followed by arousal from sleep
RF for sleep apnoea (8)
Obesity, smoker, alcohol
Fatigue
Truck Driver
Enlarged tonsils
Macroglossia
Marfan’s syndrome
PC of sleep apnoea (3)
Chronic fatigue
Unrefreshed sleep
Snoring
Ix for sleep apnoea (2)
Sleep study
TFTs