Respiratory Flashcards
NIV: Indications
- COPD with respiratory acidosis
- T2RF secondary to chest wall deformity, NM disease or OSA
- Cardiogenic pulmonary oedema
- Weaning for intubation
Saccharopolyspora rectivirgula
Farmer’s lung
Asperillus clavatus
Malt workers lung
EAA: imaging
Fibrosis in upper / mid-zone
EAA: Mx
PO steroids
Varenicline: MoA
Partial nicotinic receptor agonist
Varenciline: SE
Nausea
Headache
Insomnia
Abnormal dreams
Bupropion: MoA
Norephinephrine and dopamine reuptake inhibitor
Nicotinic antagonist
Bupropion: CI
Epilepsy, pregnancy and breast feeding
When to discharge patient with primary PTX
Rim of air <2cm and not SoB
Insertion of chest drain for secondary PTX
> 50 years and >2cm +/- SoB
Aspiration of secondary PTX
1-2 cm and admit for 24 hours
Bronchiectasis: Causes
A SICK AIRWAY Airway obstruction / lesion Sequestration Infection / inflammation CF Kartagener's ABPA Immunodeficiencies William Campbell Aspiration Yellow nail syndrome
CI to surgery in NSCLC
Stage IIIb or IV FEV1 <1.5L Malignant pleural effusion Near hilum Vocal cord paralysis SVC obstruction
Small cell LC: Paraneoplastic Sx
ADH, ACTH, Lambert-Eaton
Squamous cell LC: Paraneoplastic Sx
Parathyroid related protein
Clubbing
Hypertrophic pulmonary osteoarthropathy
Hyperthyroid
Sarcoidosis: Indications for steroids
CXR stage 2 or 3
Hypercalcaemia
Eye. heart or neuro involvement
Sarcoidosis: poor prognosis
Insidious onset, symptoms >6 months
Absence of erythema nodosum
Extra-pulmonary manifestations
CXR: III-IV
COPD: no asthmatic features
LABA + LAMA
COPD: asthmatic features
LABA + ICS
Safety triangle
Base of axilla
Lateral edge pec major
Lateral edge lat dorsi
5th intercostal space
Lung fibrosis: upper lobes
CHARTS Coal worker's Hypersensitivity pneumonitis / histiocytosis AS Radiation TB Silicosis / sarcoidosis
Lung fibrosis: lower zones
Idiopathic
SLE
Amiodarone, bleomycin, methotrexate
Asbestosis
Loffler’s Syndrome: features
CXR shadowing and eosinophilia
Fever, cough, and night sweats
Self limiting
Oxygen dissociation: shift to left
LOWER Low H+ Low pCO2 Low 2,3-DPG Low temperature
Respiratory alkalosis: causes
Anxiety PE Salicylate poisoning CNS disorders Altitude Pregnancy
Asthma Mx
- SABA
- SABA + ICS
- SABA + ICS + LTRA
- SABA + ICS + LABA +/- LTRA
- SABA + ICS + MART
Tidal Volume
Inspired at at rest
500ml in males, 350ml in females
Inspiratory reserve volume
Maximum volume of air that can be inspired
2-3L
Inspiratory capacity
TV + IRV
Expiratory reserve volume
Maximum volume of air that can be expired
750ml
Residual volume
Volume of air remaining after maximal expiration
Increases with age
FRC - ERV
~1.2L
Functional residual capacity
Volume in lungs at end of expiration
FRC = ERC + RV
Vital Capacity
Maximum volume of air that can be expired after maximal inspiration
Decreases with age
VC = IC + ERC
4.5L in males, 3.5L in females
TLC
VC + Residual volume
Raised TLCO
Asthma Pulmonary haemorrhage Left to right shunt Polycyaethemia Hyperkinesis Male
Lower TLCO
Fibrosis Pneumonia PE Oedema Emphysema Anaemia Low CO
Candidates for LTOT in COPD
FEV1 <30% Cyanosis Polycythaemia Peiripheral oedema Raised JVP <92% pO2 <7.3
IPF: features
Progressive exertional dyspnoea
Bibasal fine end-expiratory crackles
Dry cough
Clubbing
IPF: diagnosis
Restrictive spirometry
Reduced TLCO
Bilateral interstitial shadowing
Atelectasis: features
Dyspnoea and hypoxia 72 hours post op
Lung Ca: RF
Smoking (x10) Asbestos (x5) Arsenic Radon Nickel Chromate Aromatic hydrocarbon Cryptogenic fibrosing alveolitis
Churg-Strauss Syndrome: what?
ANCA positive small vessel vasculitis
Churg-Strauss: features
asthma eosinophilia paranasal sinusitis mononeuritis multiplex pANCA
Churd-Strauss: precipitant
Leukotriene receptor antagonist
Transudate effusion
<30g/L protein
Causes of transudate effusion
Heart failure, hypoalbuminaemia, hypothyroid, Meigs’
Exudate effusion
> 30g/L protein
Causes of exudate effusion
Infection, connective tissue disease, neoplasia, pancreatitis, PE, Dressler’s syndrome, yellow nail syndrome
a-1 antitrypsin: normal
PiMM
a-1 antitrypsin: 50% normal
PiSS
a-1 antitrypsin: 10% normal
PiZZ
Most common cause of IECOPD
H. influenzae
AMS: Mx
descent
acetazolamide
HACE: Mx
Descent
Dexamethasone
HAPE: Mx
Descent Nifedipine Dexamethasone Acetazolamide Oxygen
Occupational asthma: causes
Isocyanates Platinum salts Soldering resin Glutaraldehyde Flour Epoxy resins Protelytic enzymes
Causes of bilateral hilar lymphadenopathy
Lymphoma/maligancy
Pneumoconiosis
Fungi
Cavitating lung lesions: causes
Abscess (Staph aureus, Klebsiella, Pseudomonas) Squamous cell LC TB Wegener's PE RA Aspergillosis Histoplasmosis
Sarcoid: 0
normal
Sarcoid: 1
BHL
Sarcoid: 2
BHL + interstitial infiltrates
Sarcoid: 3
Diffuse interstitial inflitrates
Sarcoid: 4
Diffuse fibrosis