SAQ Mistakes Flashcards
(173 cards)
Describe the medications used in TB, their length of course and common side effects
Rifampicin - 6 months - red/orange urine/tears
Isoniazid - 6 months - peripheral neuropathy
Pyrazinamide - 2 months - hyperuricaemia/gout
Ethambutol - 2 months - optic neuritis
Which drug is co-prescribed with RIPE and why?
Pyridoxine - prevents isoniazid induced neuropathy
Give 4 causes of erythema nodosum
- TB
- Sarcoidosis
- Pregnancy
- IBD
- Idiopathic
Describe bronchiectasis
Permanent dilation of the airways secondary to chronic infection
Describe the common causative organisms of pneumonia in cystic fibrosis
- Pseudomonas aeruginosa
- Streptococcus pneumoniae
- Haemophilus influenzae
Describe the causes of bronchiectasis
- Pneumonia
- Idiopathic
- Post-obstructive (e.g. foreign body)
- Alpha-1 antitrypsin deficiency
Describe the mechanism by which type II respiratory failure occurs in PE
Ventilation-perfusion mismatch
Describe the target INR and anticoagulant treatment time following PE
Target INR = 2-3
Treat for AT LEAST 6 months (if unprovoked), AT LEAST 3 months if provoked
Describe the common metastases sites of lung cancer
- Brain
- Liver
- Bone
What spirometry pattern is seen in asthma?
Obstructive (low FEV1:FVC, low FEV1 with normal FVC)
> 15% improvement in FEV1 after SABA
What measurement is used to measure COPD severity?
FEV1
Why do COPD patients have reduced target saturations?
Risk of losing hypoxic drive!
Avoids oxygen induced hypercapnoea and subsequent worsening acidosis.
This is because raised O2 slows the respiratory drive.
What contraindicates LTOT in COPD?
Current smoker
Describe the signs of lung consolidation on examination
- Dullness to percussion
- Reduced chest expansion
- Crepitations on auscultation
Describe the CURB-65 score
C - new confusion
U - urea >7
R - RR>=30
B - BP <90 sys or <=60 dys
65 - age >65
Give 3 common causative organisms of pneumonia
- Streptococcus pneumoniae
- Haemophilus influenzae
- Mycoplasma pneumoniae
Describe the complications of pneumonia
- Sepsis
- Effusion
- Respiratory failure
- Atrial fibrillation
- Abscess
Which staging system is used in lung cancer?
TNM
Describe a test for SVC obstruction
Pemberton’s test - raise hands above head and assess for cyanosis of face, raised JVP or breathlessness
Describe the CXR findings in pulmonary fibrosis
- Honeycomb lung
- Reduced lung volume
Give 3 causes of extrinsic allergic alveolitis
- Bird fancier’s lung (allergy to bird faeces)
- Farmer’s lung (allergy to mold spores in hay)
- Malt worker’s lung (allergy to mold in malt)
Give 3 extra-pulmonary causes of pulmonary fibrosis
- Medications (e.g. methotrexate)
- Rheumatoid arthritis
- Systemic lupus erythematosus
Give 5 respiratory causes of clubbing
- Lung cancer
- Pulmonary fibrosis
- Bronchiectasis
- Mesothelioma
- Chronic empyema
Define cor pulmonale
Right heart failure secondary to chronic pulmonary hypertension