Resp Flashcards
OSA diagnostic tests?
Epworth Sleepiness Scale
Polysomnography (e.g. night time SpO2 monitoring for apnoeic episodes)
OSA Rx?
Weight loss, stop smoking, stop drinking
CPAP
Intra-oral devices e.g. mandibular advancers
Inform DVLA if severe daytime somnolence
Cavitating lung lesion DDx? (x7)
Abscess (Staph, Kleb, Pseudomonas) Squamous lung cell cancer TB Wegener's granulomatosis RA PE Weird stuff (aspergil/histoplas/coccidiodomycosis)
Centor Criteria?
Absence of cough
Tender anterior lymphadenopathy
History of fever (>38)
Tonsillar exudate
Should uncomplicated acute URTIs be treated with antibiotics?
No, unless Centor score 3 or more OR are a child
A 52-year-old man who was born in India presents with episodic haemoptysis. His only history is tuberculosis as an adolescent. Chest x-ray shows a rounded opacity in the right upper zone surrounded by a rim of air.
Aspergilloma
Fx of mitral stenosis?
Dyspnoea
MDM
Malar flush
AF
How does mitral stenosis cause haemoptysis?
Raised left atrial pressure causes bronchial vein rupture leading to haemoptysis
GwP vs. Goodpastures?
GwP is classic triad of glomerulonephritis, haemoptysis (+- epistaxes/sinusitis), saddle shaped nose.
Goodpastures comprises haemoptysis, glomerulonephritis and the patient is SYSTEMICALLY unwell
Klebsiella pneumonia Fx?
Alcoholics and diabetics pper lobe cavitating lesions Often the agent of aspiration pneumonia Red currant sputum 30-50% mortality
General + medical COPD management?
Stop smoking
Annual influenza vaccine + one off PCV vaccine
Home O2 therapy
Bronchodilators (SABA/SAMA/LABA/LAMA/oral theophyline)
What is cor pulmonale?
Right sided heart failure secondary to pulmonary hypertension
What are the features of cor pulmonale
Loud P2 Breathlessness/cough Peripheral oedema Raised JVP Systolic parasternal heave
Factors which improve survival of stable COPD patients?
- Smoking cessation
- Home O2 therapy
- Lung volume reduction surgery
Light’s criteria?
Used to distinguish between transudative and exudative pleural effusions.
Exudative: pleural fluid protein >30, Transudative: <30.
If fluid protein between 25-35 then use Light’s criteria:
- Pleural fluid protein:serum protein >0.5 -> exudative
- Pleural fluid LDH: serum LDH >0.6
- Pleural fluid LDH >2/3 the upper limit of normal serum LDH
Pleural effusion causes?
Exudative: Pneumonia, cancer, TB, PE, viral infection, autoimmune
Transudative: CCF, cirrhosis, nephrotic syndrome, hypoalbuminaemia
IPF clinical Fx?
Progressive exertional dyspnoea
Dry cough
Clubbing
Fine bibasal end inspiratory crackles
IPF Ix?
Exam +Hx
spirometry (FEV1/FVC restrictive picture)
High resolution CT thorax is gold standard imaging - shows ground glass opacification progressing to honeycomb lung.
30% are ANA positive
Small cell lung cancer paraneoplastic Fx?
Lambert Eaton
ADH
ACTH
Squamous cell lung cancer paraneoplastic Fx?
PTHrp, ectopic TSH, clubbing, hypertrophic pulmonary osteoarthropathy
Occupational asthma Dx?
Serial peak flow measurments at home and at work
Commonest cause of IE COPD? +Rx?
H. influenza
Amoxicillin/Doxy + steroid
Role of steroids in COPD management?
Prevent frequency of exacerbations
What is ARDS?
Acute respiratory distress syndrome
Increase alveolar capillary permeability leads to fluid accumulation in the alveoli (non-cardiogenic pulmonary oedema)
40% mortality
Causes of ARDS?
Infection acute pancreatitis trauma massive blood transfusion cardio-pulmonary bypass
CFx of ARDS?
Features are acute in onset and severe: Dyspnoea High RR Bilateral crackles Desaturations
Criteria for ARDS?
Acute onset (<1 week of known RF)
Pulmonary oedema on CXR
Non-cardiogenic
p)2/FiO2 <40kPa
First Ix for a large pleural effusion?
Diagnostic tap (to determine if infective or metastatic)
BTS asthma guidelines?
- SABA
- SABA+low dose ICS (<400mcg)
- SABA + ld ICS + LTRA
- SABA + ld ICS + LABA
- SABA +- LTRA + MART (ICS/LABA combined)
- SABA + LTRA + mdICS MART (4-800mcg)
- SABA + LTRA +…
a) hdICS MART (>800mcg)
b) theophylline/aminophylline/MgSO4
c) Specialist review
Examples of and pulmonary function test results in obstructive lung disease?
COPD, asthma, bronchiectasis
FEV1 Significantly reduced
FVC Reduced/Normal
FEV1/FVC Reduced
Examples of and pulmonary function tests results in restrictive lung disease
Pulmonary fibrosis, Asbestosis, Sarcoidosis, ARDS
FEV1 Reduced
FVC Significantly reduced
FEV1/FVC Normal/Raised
Causes of clubbing?
Cardiac: Congenital heart disease, Bacterial endocarditis, Arial myxoma
Respiratory: IPF, lung cancer, CF, TB, fibrosing alveolitis, mesothelioma/asbestosis, bronchiectasis
Other: IBD (Crohn’s>UC), Graves disease, Whipple’s disease), cirrhosis, PBC
Fx of sarcoidosis?
Acute: Erythema nodosum, bihilar lymphadenopathy, swinging fever, polyarthralgia
Insidious: Dyspnoea, cough, malaise, weight loss
Derm: Lupus pernio
Hypercalcaemia
Can also cause facial palsies, parotid enlargment and ocular problems
Objective tests for asthma?
Fraction of expired Nitric Oxide
Spirometry with bronchodilator reversibility
(Ask about symptom variability e.g. at work/weekends)
CXR signs of bronchiectasis?
Tramlines
Signet rings
Paraneoplastic syndromes associated SCLC?
Lambert Eaton
Cushing’s
SIADH
Which investigations should be done before commencing azithromycin
ECG (QT prolongation) and baseline LFTs
Two commonest causes of bihilar lymphadenopathy?
Sarcoid & TB
Consequences of OSA?
Hypertension
Compensated respiratory acidosis
Daytime somnolescence
Contraindications to surgery for SCLC
SVC obstruction FEV1<1.5 Hilar malignancy Presence of metastases Malignant pleural effusion
Mild and severe CAP Rx?
Mild: Oral amox
Severe: Coamox + macrolide
COPD Rx guidelines
- SABA or SAMA
- Determine steroid responsiveness:
Prev Hx atopy
Eosinophilia
Substantial FEV1 variation
>20% diurnal PEF variation
3a. If no steroid responsiveness; add LABA+LAMA
3b. If steroid responsiveness; Add LABA +ICS
THEN
LAMA +LABA+ICS
Emphysema prominence in A1AT def vs. COPD
A1AT - lower zone predominence
COPD - upper zone predominence
What is Caplan Syndrome?
Lung nodules in the context of RA
When should NIV be considered in COPD?
In T2RF where PaCO2<6 and pH 7.25-7.35
Which RA drug causes pneumonitis?
Methotrexate
FEV1/FVC in restrictive lung disease? WHY?
Normal/Raised
FVC is affected to a greater extent than FEV1, which is often normal
Commonest agent in IE COPD?
H. influenzae
When would you see red currant jelly sputum?
Klebsiella
COPD staging?
Stage 1- mild: post bronchodilator FEV1/FVC < 0.7, FEV1 >80%
Stage 2- mod: FEV1/FVC < 0.7, FEV1 50-79%
Stage 3- sev: FEV1/FVC < 0.7, FEV1 30-49%
Stage 4- v. sev FEV1/FVC <0.7, FEV1 <30%
Features of a severe asthma attack?
Unable to complete sentences
PEFR 33-50% exp
HR >110
RR >25
What are two medications available for nicotine replacement therapy, and what are their mechanisms?
Buproprion: Norepinephrine and dopamine reuptake inhibitor AND nicotine antagonist
Varenicline: Dopamine receptor partial agonist
Which agents are associated with aspiration pneumonia?
Staph aureus
Strep pneumo
Pseudomonas
Haemophilus
Features of Kartagener’s syndrome?
- Complete situs invertus
- Bronchiectasis
- Impaired fertility due to impaired ciliary function
- Recurrent sinusitis
Factors which suggest steroid responsive COPD
PMH of atopy Eosinophilia Significant diurnal variation in PEF (>20%) Substantial variation in FEV1 over time
Indications for steroids in sarcoidosis?
X-ray changes
Hypercalcaemia
Eye, heart, brain involvement
Under what circumstances should antibiotics be prescribed for an IE COPD?
If they have purulent sputum or clinical signs suggestive of pneumonia
Which anterior mediastinal mass is seen in myasthenia gravis?
Thymoma
Which blood test should be performed in all patients with TB?
HIV
Under what scenarios should oxygen therapy not be used routinely if there is no evidence of hypoxia?
Stroke
MI
Obstetric emergencies
What is Light’s criteria?
Used to distinguish transudate from exudate pleural effusion
Exudates have protein >30, transudates hae protein <30
If protein is between 25-35 then Light’s criteria is applied (involves serum protein and LDH levels)
What are the 3 BTS indications for chest tube insertion in pleural infection?
- Frankly purulent pleural fluid
- Presence of microorganisms
- pH <7.2
What is the management of a primary pneumothorax?
Rim <2cm and asymptomatic - discharge
Otherwise -> aspiration
If this fails OR >2cm OR SOB) -> chest drain should be inserted
Stop smoking
What is the management of a secondary pneumothorax?
If pt over 50 and rim is >2cm and/or SOB -> chest drain +admit
If rim 1-2cm -> aspirate -> Chest drain if failure +admit
If rim <1cm - Admit and give O2
What should patients on inhaled steroids immediately after use and why?
Rinse their mouth to prevent development of oral candidiasis
What are the general signs of lobar collapse on CXR?
Tracheal deviation towards the side of collapse
Mediastinal shift towards side of collapse
Elevation of hemidiaphragm
Increased opacity in relevant zone
What is a Ghon focus and what does it indicate?
A (+-calcified) nodule indicating latent (i.e. a primary TB infection in the past which has become contained in a granuloma)
What is Bupropion used for and when is it contraindicated?
An SNRI used for smoking cessation. It is contraindicated in epilepsy, pregnancy and breast feeding
What is the latent period of asbestos exposure causing mesothelioma?
30-40 years
What is the investigative protocol for ?mesothelioma?
CXR - may show effusion or pleural thickening
CT
Thoracoscopic biopsy and histology is gold standard for diagnosis
What are the pulmonary features of SLE?
Pleuritis with exudative effusion
What are some causes of pleural effusion?
Transudate: CCF, hypoalbuminaemia (liver, nephrotic, malabsorption), hypothyroid
Exudate: Infection, CTD, Neoplasia, PE, pancreatitis
What are the CXR findings of heart failure/
ABCDE
Alveolar oedema (batswings) B lines (kerley) Cardiomegaly Dilated prominent upper lobe vessels Effusion
What is the next step in management of an acute asthma attack following: 100% 02, neb salb, neb ipra, IV hydrocortisone
IV MagSulph
Which paraneoplastic syndromes are associated with SCLC?
Cushings
SIADH
LEMS
Which lung cancer typically causes paraneoplastic hypercalcaemia?
Squamous cell
How might you differentiate the causes of a white-out hemithorax?
Tracheal position
Towards whiteout - pneumonectomy, complete lung collapse
Central - Consolidation, pulm oedema, mesothelioma
Away from whiteout - Effusion, diaphragmatic hernia, large mass
What is atelectasis and when is it most common?
Basal alveolar collapse which may lead to respiratory difficulty. It is caused by airway obstruction due to bronchial secretions.
It is commonest in patients with dyspnoea and hypoxaemia who are 72 hours post op.
What is the management of atelectasis?
Chest physio and breathing exercises
Which three body systems are involved in granulomatosis with polyangiitis?
URT: Epixtaxis, sinusitis
LRT: Dyspnoea, haemoptysis
Pauci immune glomerulonephritis
Saddle nose
Swinging chest drain - rises on _____, falls on _____
Rises on inspiration, falls on expiration
What are the Centor criteria?
Presence of tonsillar exudate
Absence of cough
History of fever
Tender anterior cervical lymphadenopathy
What is indicated by 3 or more positive Centor criteria?
40-60% chance of Group A beta haemolytic strep
What are the Pulmonary function results of a restrictive lung disease?
Reduced/normal FEV1
Reduced FVC
Raised FEV1:FVC
What is the management of non-steroid responsive COPD?
- SABA
2. LABA + LAMA
What are the iatrogenic causes of pulmonary fibrosis?
Bleomycin Cyclophosphamide Nitrofurantoin Methotrexate Penicillamine Amiodarone
What are the adverse effects of statins?
Myopathy
Hepatic impairment
What type of pleural effusion does a PE cause?
Exudative
What is the most important intervention to start in early stages of COPD?
Pulmonary rehabilitation
What are the clinical and biochemical features of Eosinophilic graunulomatosis with polyangiitis?
Asthma Eosinophilia Paranasal sinusitis Mononeuritis multiplex pANCA positive serology
What is the management approach for bronchiectasis?
Physiotherapy Postural drainage Antibiotics Bronchodilators Immunisations Surgery
What are the indications for surgery in bronchiectasis?
Localised disease (confined to 1 lobe) Haemoptysis
What is hypertrophic pulmonary osteoarthropathy/
A triad of periostitis, clubbing and osteoarthritis of the large joints, commonly secondary to lung adenocarcinoma
Which type of lung cancer is associated with gynaecomastia?
Adenocarcinoma
What are the acute, insidious and skin manifestations of Sarcoidosis?
Acute: Erythema nodosum, BHL, swinging fever, polyarthralgia
Insidious: Dyspnoea, non-productive cough, malaise, weight loss, lymphadenopathy
Skin: Lupus pernio
Also: Hypercalcaemia
What are the stages of COPD severity, and how is this determined?
Mild: FEV1 >80% pred, post bronchodilater FEV1/FVC (pbF/F) <0.7
Moderate: FEV1 50-79%, pbF/F <0.7
Severe: FEV1 30-49%, pbF/F <0.7
Very severe: FEV1 <30%, pbF/F
What is an indicator that a patient with acute asthma may need invasive ventilation?
A normal PaCO2
True or false - Pleural plaques secondary to asbestos exposure do not undergo malignant change
True
What are some causes for upper zone fibrosis?
CHARTS
Coal worker's pneumoconiosis Histocytosis AnkSpon Radiation TB Sarcoid
What are some causes of lower zone pulmonary fibrosis?
Drug causes
IPF
What is an indication for BiPAP in an acute exacerbation of COPD?
Type two respiratory failure with respiratory acidosis
What are some diagnostic criteria for asthma?
FeNO >40
Post bronchodilator improvement in lung volume of >200ml
Post bronchodilator improvement in FEV1 of 12% or more
PEF Variability of 20% or more
FEV1/FVC <70%
Steroid responsive COPD patients managmenet?
- SABA/SAMA
2. Add LABA + ICS
Which pharmacological smoking cessation aid can be prescribed in pregnancy?
Nicotine patch only
What is the most common infective agent in acute exacerbations of COPD?
H influenza
What should the target SpO2 of a COPD patient with normal CO2 be?
94-98%
What PFTs are seen in obstructive lung disease?
FEV1 significantly reduced
FVC low/ normal
FEV1/FVC - reduced
What PFTs are seen in restrictive lung disease?
FEV1 reduced
FVC significantly reduced
FEV1/FVC normal/increased
When is Azithromycin prophylaxis recommended for COPD patients?
In those who do not smoke and have optimal pharmacological management yet continue to have more than 4 exacerbations per year
What are the features of Kartagener’s syndrome?
Dextrocardia/situs invertus
Bronchiectasis
Recurrent sinusitis
Subfertility
When should LTOT be considered in COPD patients?
Those with two readings of PaO2 <7.3 and one of:
Pulmonary hypertension
Secondary polycythaemia
Peripheral oedema
What are the Xray signs of right upper lobe consolidation?
Abnormal opacificication in the RUZ abutting the horizontal fissure
Can ARDS be diagnosed if there is concomitant cardiac pathology?
No
True or false: Alpha 1 antitrypsin deficiency is a risk factor for HCC development
True
Which medications are used for the prevention of vs. the treatment of high altitude cerebral oedema?
Prevention: Acetazolomide
Treatment: Dexamethasone
True or false: BHL alone is not an indication to begin treatment of sarcoidosis.
True
How does Miliary TB spread throigh the lungs?
Through the pulmonary venous system
What are the indications for commencement of treatment for sarcoidosis, and what is the first line treatment?
Hypercalcaemia
Parenchymal lung disease
Uveitis
Neurological or cardiac involvement
Corticosteroids
As well as weight loss, what is the best treatment option for obstructive sleep apnoea?
CPAP
What are the features of superior vena cava syndrome?
Dyspnoea
Facial/upper limb swelling
Venous distention in chest and arms