Resp Flashcards
How do you manage a non-tension pneumothorax in a patient with no previous lung disease?
If >2cm or SOB do needle thoracentesis
If not discharge and review in OP in 2-4 weeks
How do you manage a non-tension pneumothorax in a patient with previous lung disease?
> 2cm or SOB do chest drain and admit
If 1-2cm do needle thoracentesis
If <1cm admit for observation and consider high flow oxygen
Describe the CURB-65 score?
Confusion (abbreviated mental state score =< 8/10)
Urea >7
RR >= 30
BP =< 90 systolic and/or =<60 diastolic
Age >= 65
Sx of a lung abscess?
Fever, chest pain, productive cough with foul smelling sputum, dyspnoea and clubbing
Ix and Mx of a lung abscess?
CXR = fluid filled space with an area of consolidation (+ air fluid level)
Mx = IV Abx, if it does not resolve use percutaneous drainage
Name the causes of mediastinal widening on CXR?
Pt. rotation, aneurysm, lymphoma, retrosternal goitre, teratoma and thymus tumours
What are the indications for steroid treatment in sarcoidosis?
PUNCH
Parenchymal lung disease
Uveitis
Neurological involvement
Cardiac involvement
Hypercalcaemia
How does sarcoidosis commonly present?
What is the gold standard for diagnosis?
In young (20-40s) black females
Chest Sx e.g. dry cough, erythema nodosum (shin lumps), lymphadenopathy and may have changes to the skin on the face
Biopsy of the granulomas - non-caseating granuloma with epithelioid cells
How should you deliver oxygen to critically ill patients?
High flow (15L/min) through a non-rebreath mask until target saturations are reached. Do this even if they are a known retainer
What are the possible consequences of asbestos exposure?
Pleural plaques (benign no Mx required)
Pleural thickening
Asbestosis - lower lobe fibrosis which requires conservative Mx
Mesothelioma - malignant and requires palliative chemo
Lung Cancer (non-mesothelioma cancers are the most common form of cancer associated with asbestos)
How do we differentiate between transudate and exudate fluid in a pleural effusion?
Exudate have a protein of >30g/L, transudates have a protein of <30g/L
If protein is between 25-35g/L consider the Light’s criteria (exudate if):
Pleural:Serum protein >0.5
Pleural:Serum LDH >0.6
Pleural fluid LDH is more than 2/3rd the upper limit of normal serum LDH
Name the most common cause of exudate and transudate pleural effusion?
Transudate = heart failure
Exudate = pneumonia
How do we diagnose asthma?
> = 17 years old = spirometry with Bronchodilator reversibility testing and FeNO test
5-16 years old = spirometry with Bronchodilator reversibility testing, if negative or normal do FeNO test
<5 years old - clinical judgement
What is the most common lung cancer in smokers vs non-smokers?
Non-Smokers = Adenocarcinoma
Smokers = SCLC
Where is the lung most commonly affected in aspiration pneumonia? Name 1 procedure that increases the risk?
Right middle and lower lobes
Recent intubation is a RF
What are the CXR findings seen in HF?
Alveolar oedema (bat wings)
Kerley B lines
Cardiomegaly
Dilated upper lobe vessels
Effusions
Mx of CAP vs HAP?
CAP = Amoxicillin
HAP (>= 48 hours after hospital admission) = Co-Amoxiclav
What is Left lingual consolidation?
loss of the L heart border on CXR
What is the diagnosis when a CXR shows a completely white lung with the trachea pulled towards it?
Lung collapse
When should you consider NIV in exacerbation of COPD?
When respiratory acidosis persists despite maximum standard medical treatment (nebs, steroids and theophylline)
Which are the standard antibiotics which you can use in COPD exacerbation?
Amoxicillin, Clarithromycin or Doxycycline
Avoid clari if there is congenital long QT syndrome
What is the criteria for diagnosing TB after Manteaux skin test?
> 5mm if immunocompromised
10mm if risk factors for infection (e.g. healthcare worker or travel to high risk area)
15mm if no risk factors
When should you give antibiotic treatment over supportive Mx for bronchitis? Which Abx should you give?
If systemically unwell or if there are co-morbidities or CRP>100
Give doxycycline or Amoxicillin if pregnant/a child
What should you suspect if a young person or non-smoker presents with COPD Sx?
Alpha-1 Antitrypsin Deficiency
Who is Klebsiella pneumiae seen in? How does it present?
Seen in alcoholics and diabetics or secondary to aspiration pneumonia
Sputum is red-currant jelly like
It can commonly progress to an abscess
Should you do a CXR after CAP? If so when?
Yes if they are a smoker or >50
Do it 6 weeks after resolution of Sx
Above what % improvement of FEV1 with bronchodilators is asthma indicative?
> =12%
Sx of idiopathic pulmonary fibirosis?
Exertional dyspnoea, dry cough, weight loss, bibasal inspiratory crackles and finger clubbing
What scan should be offered to those with a known or suspected lung CA?
Contrast CT
When should you use BiPAP?
In those with a respiratory acidosis pH 7.25-7.35 and T2RF after medical management (nebulised salbutamol, ipratropium bromide and IV hydrocortisone) have failed
When should you use CPAP?
In those with T1RF for whom medical management has failed
Mx of COPD exacerbation?
Amoxicillin/Doxycycline/Clarithromycin and oral pred
What are the common causes of respiratory alkalosis
Panic attack, PE, Altitude, Pregnancy, Salicylate poisoning and CNS disorders e.g. stroke, encephalitis and SAH
What are the common causes of respiratory acidosis?
Life threatening asthma or pulmonary oedema, COPD, obesity hypoventilation syndrome, neuromuscular disease and sedative drugs e.g. benzos/opioids