Respiratory Flashcards
What are the 4 lung volumes? (not capacities that are made up of 2 or more lung volumes)
- Tidal Volume
- Inspiratory Reserve Volume
- Expiratory Reserve Volume
- Residual/Reserve Volume
What is the volume that can be exhaled after maximum inspiration called? (IRV + TV + ERV)
Vital capacity (forced vital capacity)
What is the volume breathed in from quiet expiration to maximum inspiration called? (TV + IRV)
Inspiratory capacity
What is the volume remaining in the lungs after quiet expiration called? (ERV + RV)
Functional Residual Capacity
What conditions cause an obstructive lung pattern disease?
- Asthma
- COPD
- Bronchiectasis
- Bronchiolitis obliterans
What conditions cause a restrictive pattern of lung disease?
- Pulmonary fibrosis
- Asbestosis
- Sarcoidosis
- ARDS
- Infant respiratory distress syndrome
- Kyphoscoliosis (e.g. Ank Spondylitis)
- NM disorders
- Severe obesity
What are the different subtypes of lung fibrosis?
- Idiopathic
- Connective tissue disorders (e.g SLE)
- Drug-induced
- Asbestosis
- Hypersensitivity pneumonitis (allergic alveolitis)
- Coal workers pneumoconiosis/progressive massive fibrosis
- Silicosis
- Ank Spond
- Histiocytosis
- TB
- Radiation induced
What conditions cause upper lobe Pulmonary Fibrosis?
CHHARTSS
- Coal workers pneumoconiosis/progressive massive fibrosis
- Hypersensitivity pneumonitis (allergic alveolitis)
- Histiocytosis
- Ank Spond
- Radiation induced
- TB
- Silicosis
- Sarcoidosis
What conditions cause lower lobe Pulmonary Fibrosis?
- Idiopathic
- Connective tissue disorders (e.g SLE)
- Drug-induced (e.g bleomycin, methotrexate, amiodarone)
- Asbestosis
What drugs cause pulmonary fibrosis (lower lobes)
- Bleomycin
- Amiodarone
- Methotrexate
What part of the lung does Klebsiella affect
Upper usually
What is heard on auscultation in pulmonary fibrosis?
Bibasal fine end-inspiratory crackles
Inhaler technique:
- How long should you hold breath for after breathing in the gas
- How long should you wait before administering a second dose
- Hold breath for 10 seconds
- Wait approximately 30 seconds before repeating
High risk pneumothorax (not tension) what is the management?
Chest drain insertion
What are the options for a simple pneumothorax > 2 cm and/or SOB?
- Needle aspiration (if this fails twice -> chest drain)
- Chest drain
- Ambulatory device
How is a spontaneous pneumothorax managed if less than 2cm or no SOB?
- 2 management options
Conservatively
- Primary pneumothorax -> outpatient review every 2-4 days
- Secondary pneumothorax -> monitored as an inpatient
If stable, follow-up in outpatients department every 2-4 weeks
When are patients followed up after pneumothorax resolution?
2 -4 weeks
What procedure may be done if a patient has recurrent pneumothoraxes or insufficient lung rexpansion despite chest drain insertion?
VATS (video assisted thoracoscopy surgery)
- Mechanical/chemical pleurodesis
- +/- Bullectomy
When can a patient fly after pneumothorax?
- 2 weeks after no residual air and sufficient drainage
- 1 week post CXR
What is the most commonly used oxygen administration on COPD patients?
28% Venturi
A patient wants to quit smoking but is pregnant or is breast-feeding what treatment can you offer her?
- CBT, motivational interviewing, structured self-help NHS stop smoking services
- NRT - Nicotine patches
- NOT Bupropion or Varenicline (teratogens)
What smoking cessation drug is a NE, dopamine Reuptake inhibitor and nicotinic antagonist?
Bupropion
What smoking cessation drug is a nicotinic receptor partial agonist?
Varenicline
What smoking cessation drug is contraindicated in epilepsy?
Bupropion
What chemicals are the number 1 cause of occupational asthma?
Isocyanates
What sign on FBC is a sign of lung cancer?
Raised platelets
What are the factors that make up the CURB-65 score?
- Confusion
- Urea > 7
- RR >= 30
- BP <= 90 / 60
- > = 65
Surgery is indicated in bronchiectasis when?
- Disease is localized to one lobe
- Uncontrollable haemoptysis
What kind of lung cancer may feature Gynaecomastia?
Adenocarcinoma
What types of lung cancer may feature Hypertrophic pulmonary osteoarthropathy (HPOA)
- Squamous cell
- Adenocarcinoma
What type of lung cancer causes PTH-rp and ectopic TSh secretion (hyperthyroidism)
Squamous
What type of lung canccer typically features clubbing?
Squamous
What lung condition can feature polycythemia
COPD
When are antibiotics indicated in bronchitis?
- What blood result and above what level
CRP > 100 (Doxy or Amox)
- CXR can be normal
What is a feature of near-fatal asthma
Raised pCO2
What are pneumatoceles?
- What do they look like?
- What are they resultant of usually?
- Intra-pulmonary air filled cystic spaces =
- Lucency with a thin wall on radiography
- Usually from ventilator-induced lung injury
What type of pleural effusion may result from pulmonary embolism?
Exudative
Peripheral clustered cystic air spaces with ‘honeycombing’ appearance is likely to describe what type of lung condition?
Pulmonary fibrosis
What can mimic pneumothorax with air spaces in lung >1cm in diameter and is common in smokers and emphysema?
Emphysematous bullae
What are the target sats in acute asthma?
94-96%
What is the usual treatment of sarcoid?
Nothing
Lights criteria: (3)
An exudate is likely if at least one of the following criteria are met:
- Protein >0.5
- LDH >0.6
- Pleural fluid LDH more than two-thirds the upper limits of normal serum LDH
Acute Asthma attack pneumonic
O SHIT ME
- Oxygen
- Salbutamol
- IV hydrocortisone
- Ipratropium
- Theophylline
- Magnesium sulphate
- Escalate (ITU -> Ventialtor)
COPD initial management
SABA or SAMA (ipratropium)
2nd line management of COPD with asthmatic features?
SABA + LABA + ICS (fostair is LABA + ICS)
What can be added in a patient with COPD taking SABA + LABA + ICS?
LAMA (trimbow: LABA + LAMA + ICS)
What is the second line management of COPD w/o asthmatic features?
SABA + LABA + LAMA (Tiotropium)
Give an example of a SAMA
Ipratropium
GIve an example of a LAMA
Tiotropium
What is the initial management of COPD?
SAMA or SABA
- Ipratropium or Salbutamol
Target sats for COPD patients when CO2 is normal
94 - 98%
COPD severity categories
- how many stages
- what is it based off of
Based off of FEV1
- Stage 1 (mild) >80%
- Stage 2 (moderate) 50 - 79%
- Stage 3 (severe) 30 - 49%
- Stage 4 (v. severe) <30%
When should a repeat chest XR be done after pneumonia resolution?
6 weeks after (may be abit longer)
Cavitating lesions are more common in what lung cancer?
Squamous
When reducing steroids how much at a time?
Drop 25 - 50% at a time
What must be measured before starting azithromycin?
- ECG
- LFTs
Long-term oxygen is considered in COPD patients with O2 below what level on 2 ABGs? (they also must not smoke)
< 7.3 kPa
Egg shell calcification on hilar nodes is a sign of what condition?
Silicosis
Pregnancy may cause what acid base abnormality?
Resp alkalosis
What are the 2 main tests to daignose asthma?
- Spirometry w. a bronchodilator reversibilty test
- FeNO test (> 40, >=35 kids)
All patients should have both, in children this is different
Reversibility testing must show an improvement of what to diagnose asthma?
FEV1: >=12% or 200ml or more
(only use percentages in kids)