Respiratory Flashcards

1
Q

Give some risk factors for pulmonary embolism

A
Previous VTE
Over 60
Obesity
Immobility, prolonged travel
Pregnancy
OCP/HRT
Malignancy
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2
Q

How may a non-massive PE present?

A
Pleuritic pain
SOB
Tachypnoeic
Haemoptysis
Fever
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3
Q

How may a massive PE present?

A

Central chest pain
Collapse
Haemodynamic compromise
Raised JVP

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4
Q

Give some Ddx for a PE

A
ACS
Pneumothorax
Pneumonia
Aortic Dissection
Cardiac tamponade
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5
Q

What score can be used to assess the probability of a PE?

A

Well’s score

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6
Q

If a Well’s score gives a low/moderate probability of a PE, what additional test should be performed?

A

D-dimer

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7
Q

If a Well’s score gives a high probability of a PE, what additional test/investigation should be performed?

A

CTPA/VQ scan (both require a CXR)

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8
Q

When does a VQ scan need to be performed over a CTPA?

A

Young age
Pregnancy
Renal failure

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9
Q

What picture may be identified on ABG if a patient has a PE?

A

Respiratory alkalosis (low pCO2, low H, low pO2)

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10
Q

Define a massive PE

A

Embolus in the RV outflow tract

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11
Q

Define a non-massive PE

A

Embolus in a terminal vessel

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12
Q

What is the initial management of a PE?

A
ABCDE assessment
Oxygen
IV access
Bloods - Including ?D-dimer, clotting and troponin
ECG and CXR

Analgesia

Thrombolysis if haemodynamically compromise (usually alteplase)

Anticogulation

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13
Q

What are further management options of PE

A

Oral anticoagulation
IVC filter
Embolectomy

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14
Q

Give some complications of a PE

A

Post-thrombotic syndrome
Recurrence
Chronic thromboembolic pulmonary hypertension
Right heart failure

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15
Q

Define bronchiectasis

A

Abnormal and permanent dilatation of the airways leading to mucus accumulation increasing the susceptibility to infection

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16
Q

What signs are associated with Kartagener’s syndrome?

A

Primary ciliary dyskinesia
Dextrocardia
Situs inversus

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17
Q

What are the signs associated with primary ciliary dyskinesia?

A

Sinusitis
Bronchiectasis
Azospermia

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18
Q

What are the symptoms of bronchiectasis?

A
Cough
SOB
Excessive sputum production
Recurrent chest infections
Haemoptysis
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19
Q

What are the signs of bronchiectasis?

A

Cachexia and lymph nodes
Clubbing
Hyperinflation
Auscultation - coarse cracks, squeaks and wheeze, inspiratory clicks

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20
Q

What are the Ddx of bronchiectasis?

A

Pulmonary fibrosis
Bronchial carcinoma
Chronic lung abscess
Asbestosis

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21
Q

Give some causes of bronchiectasis

A

Congenital - CF, Primary ciliary dyskinesia, Kartagener’s syndrome

Mechanical obstruction - foreign body, bronchial carcinoma, lymph node

Post-infective - measles, TB, Pertussi, bacterial/viral pneumonia

Granulomatous disease - sarcoidosis, TB

Immune over-activity - IBD, RA, Sjorgen’s

Immune deficiency - hypogammaglobulinaemia, Secondary to HIV/malignancy

Aspiration - chronic alcoholics, GORD

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22
Q

How should bronchiectasis be investigated?

A

Sputum culture and cytology

CXR - tramlines, ring shadows

High Resolution CT - Signet ring sign

Spirometry - normal/restrictive pattern

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23
Q

What signs are typically seen on CXR if a patient has bronchiectasis?

A

Tramlines, ring shadows

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24
Q

What sign is typically seen on HRCT if a patient has bronchiectasis

A

Signet ring

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25
Q

How should bronchiectasis be managed?

A

Non pharmacological - MDT, physio, smoking cessation, vaccines

Medical - antibiotics (amoxicillin or clarithromycin)

Long term antibiotics if have > 3 exacerbations per year (azithromycin)

Bronchodilators/imhaled corticosteroids

Surgery - resection, heart/lung transplant

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26
Q

What are the complications of bronchiectasis?

A
Progressive respiratory failure
Cor pulmonale
Pneumonia
Pneumothorax
Empyema
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27
Q

Define an acute asthma attack

A

Rapid deterioration in symptoms due to a localised type 1 hypersensitivity reaction

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28
Q

How can an acute asthma attack present?

A

Progressive worsening SOB
Use of accessory muscles
Tachypnoea
Symmetrical expiratory wheeze

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29
Q

Define a moderate asthma attack

A

PEFR 50-75% predicted

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30
Q

Define a severe asthma attack

A

PEFR 33-50% predicted
RR >25
HR >110
Unable to complete sentences

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31
Q

Define a life-threatening asthma attack

A
PEFR <33% predicted
Sats <92%
Becoming tired
Silent chest 
Haemodynamic instability
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32
Q

How should a moderate asthma attack be managed?

A

Neb b2 agonists (salbutamol 5mg)
Neb ipratropium bromide
Steroids (continued for 5/7)

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33
Q

How should severe asthma attack be managed?

A

Oxygen if required to maintain sats 94-98%
Aminophylline infusion
Consider IV salbutamol

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34
Q

How should life threatening asthma attack be managed?

A

IV magnesium sulphate infusion
HDU/ITU
Consider early intubation

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35
Q

What is a worrying sign on an ABG in a patient having an acute asthma attack?

A

Respiratory acidosis (due to high pCO2)

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36
Q

In patients who are requiring salbutamol as part of their management of asthma attacks, what needs to be monitored closely?

A

Serum K

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37
Q

What investigations are important in patients presenting with asthma attacks?

A
Peak flow
ABG
FBC
U&amp;Es
CXR
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38
Q

What are complications of an acute asthma attack?

A

Pneumothorax
Respiratory failure
Respiratory arrest
Cardiac arrest

39
Q

How can pneumonia present?

A
SOB
Productive cough 
Fever
Haemoptysis
Pleuritic chest pain 
Delirium
Sepsis
40
Q

What are the characteristic chest signs of pneumonia?

A

Bronchial breath sounds
Focal coarse crackles
Dullness to percussion

41
Q

What severity score can be used in pneumonia?

A

CURB-65

Confusion
Urea >7
RR > 30
BP <90 systolic or <60 diastolic
65
42
Q

What does the CURB-65 score predict?

A

Mortality

Helps guide admission to hospital

43
Q

What are the most common causes of CAP?

A
Streptococcus pneumoniae (50%)
Haemophilus influenzae (20%)
44
Q

What is often the most common cause of pneumonia in patients who are immunocompromised or have chronic pulmonary disease?

A

Moraxella catarrhalis

45
Q

What is the most common cause of pneumonia in patients with CF or bronchiectasis?

A

Pseudomonas aeruginosa

46
Q

What is a common cause of pneumonia in a patient with CF?

A

Staphylococcus aureus (also pseudomonas aeruginosa)

47
Q

Define an atypical pneumonia

A

Pneumonia that is caused by an organism which cannot be cultured in the normal way or detected by a gram stain

48
Q

How should atypical pneumonias be treated?

A

Macrolides (clarithrymicin)
Fluoroquines (levofloxacin)
Tetracyclines (doxycyline)

49
Q

If a patient presents with pneumonia following a recent hotel holiday, what might the causative agent be?

A

Legionella pneumophilia

50
Q

In a patient with Legionnaire’s disease, what electrolyte disturbance might they present with?

A

Hyponatraemia (causing an SIADH)

51
Q

If a younger patient has a milder pneumonia with neurological symptoms, what is the causative agent?

A

Mycoplasma pneumoniae

52
Q

In mycoplasma pneumoniae, what is the associated rash?

A

Erythema multiforme (varying sized target lesions)

53
Q

What is the potential causative agent if a school aged child presents with a mild to moderate chronic pneumonia and wheeze?

A

Chlamydophilia pneumoniae

54
Q

What type of pneumonia is linked to exposure to animals?

A

Coxiella burnetii (Q fever)

55
Q

What type of pneumonia is associated to birds?

A

Chlamydia psittaci

56
Q

What are the five causes of atypical pneumonia?

A
Legionella pneumophilia
Chlamdyia psittaci 
Mycoplasma pneumoniae
Chlamydophila pneumoniae
Q fever (coxiella burnetii)

(Legions of Psittaci MCQs)

57
Q

What type of pneumonia is associated in patients with HIV?

A

Pneumocystis jiroveci (PCP)

58
Q

How does PCP present?

A

Dry cough without sputum
SOB on exertion
Night sweats

59
Q

How is PCP treated?

A

Co-trimoxozole

60
Q

If a patient has a low CD4 count, what should they be prescribed to prevent PCP?

A

Co-trimoxazole

61
Q

How should pneumonia be investigated?

A

CXR
FBCs
U&Es
CRP

Moderate/severe:
Sputum cultures
Blood cultures
Legionella and pneumococcal urinary antigen

62
Q

How should non-severe CAP pneumonia should be managed?

A

Oral amoxicillin TDS

Or

Oral doxycycline

for 5 days

63
Q

How should severe CAP pneumonia be managed?

A

IV/oral Clarithrymicin

PLUS IV amoxicillin

For 7-10 days

64
Q

What are the associated complications of pneumonia?

A
Sepsis
Pleural effusion
Empyema
Lung abscess
Death
65
Q

What are the different types of lung cancers?

A

Non-Small cell lung cancer
(squamous cell carcinoma
adenocarcinoma)

Small cell lung cancer

66
Q

What type of lung cancer contains neurosecretory granules?

A

Small cell lung cancer

67
Q

What type of lung cancer is responsible for multiple paraneoplastic syndromes?

A

Small cell lung cancer

68
Q

What type of lung cancer, is not necessarily associated with smoking?

A

adenocarcinoma

69
Q

What are the frequent sites of metastasis in small cell lung cancer?

A

Liver
Bones
Adrenals
Brain

70
Q

What are the signs and symptoms of lung cancer?

A
SOB
Cough
Haemoptysis 
Finger clubbing
Recurrent pneumonia
Weight loss
Lymphadenopathy 
Hoarse voice 
Raised hemidiaphragm
71
Q

What are some risk factors for lung cancer?

A

Smoking
Scarring
Asbestos

72
Q

What type of lung cancer causes hypercalcaemia?

A

Squamous cell due to ectopic parathyroid hormone

73
Q

What type of lung cancer causes SIADH?

What do these patients present with?

A

Small cell lung cancer

Hyponatraemia

74
Q

What type of lung cancer causes Cushing’s? Why?

A

Small cell lung cancer

Ectopic ACTH productioN

75
Q

What findings might be present on CXR in a patient with suspected lung cancer?

A

Hilar lymphadenopathy
Peripheral opacity
Pleural effusion - usually unilateral
Collapse

76
Q

What type of CT can be used to stage Lung Cancer?

A

CT CAP (with contrast)

77
Q

What investigations can be used in the diagnosis of lung cancer?

A

Bloods - FBC, U&Es, LFT, Ca, Clotting

Sputum cytology - SCLC and squamous

CXR
CT CAP (with contrast)
PET-CT
Bronchoscopy with endobronchial ultrasound

78
Q

What staging system is used in lung cancer?

A

TNM

79
Q

What is generally offered as first line treatment in NSCLC?

A

Surgery (lobectomy)

80
Q

What are the contraindications of surgery in NSCLC?

A

SVC obstructing
Tumour within 2cm of main bronchus
FEV1 <1.5

81
Q

In what type of lung cancer can radiotherapy be curative?

A

NSCLC (if caught early enough)

82
Q

How is SCLC usually treated?

A

Chemotherapy and radiotherapy

83
Q

What can be used as part of palliative treatment to relieve bronchial constriction?

A

Stents and debunking as part of endobronchial treatment

84
Q

If a patient presents with lung cancer and a hoarse voice, what is the cause of this?

A

Recurrent laryngeal nerve palsy

85
Q

What extrapulmonary manifestation can cause diaphragm weakness and shortness of breath?

A

Phrenic nerve palsy

86
Q

What palliative treatments can be offered in lung cancer?

A

Palliative chemotherapy
Prednisolone - improve appetite
Morphine for pain
Laxatives

87
Q

How can superior vena cava obstruction present?

A

Facial swelling
Difficulty breathing
Distended veins in neck and chest

88
Q

What is Pemberton’s sign?

A

Raising hands over the head causes facial congestion and cyanosis

89
Q

What is the triad of Horner’s syndrome?

A

Ptosis
Anhydrosis
Miosis

90
Q

What can cause Horner’s syndrome?

A

Compression of the sympathetic ganglion by a Pancoast tumour

91
Q

What antibodies are associated with Limbic encephalitis?

A

Anti-Hu

92
Q

Describe limbic encephalitis in regards to lung cancer

A
Associated with SCLC
Anti-Hu antibodies target the limbic system
Short term memory impairment
Hallucinations
Confusion
Seizures
93
Q

What is Lamber-Eaton myasthenic syndrome?

A

SCLC produces antibodies against voltage-gated Ca channels situated on the presynaptic terminal in motor neurons

Weakness in proximal muscles
Diplopia
Ptosis
Slurred speech and dysphagia

Weakness gets worse with prolonged use