lungs Flashcards

1
Q

2 common causes of pneumonia CAP

A
  • streptococcus pneumonia

- haemophilius influenza

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2
Q

2 common causes of HAP

A
  • pseudonomas aeroginosa

- staph aureus

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3
Q

usual sites of aspiration pneumonia

A
  • right middle lobe

- right lower lobe (apical & posterior segment)

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4
Q

what is in Tazocin

A
  • Piperacillin

- Tazobactam (prevents bacteria from inactivating piperacillin)

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5
Q

name 2 opportunistic fungi

A
  • aspergillus

- candida spp

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6
Q

what does progressive neutropenia or leukopenia in an unwell immunocopromised host suggest?

A

Candidiasis/Aspergillosis

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7
Q

what is CXR halo sign associated with?

A

this is a ground glass opacity surrounding a pulmonary nodule or mass - most commonly associated with pulmonary aspergillosis

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8
Q

what rash is mycoplasma pneumoniae associated with

A

erythema multiforme

characterised by target lesions (pink rings with pale centres)

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9
Q

how is Chlamydia psittaci typically contracted

A

in contact with infected birds e.g. parrots

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10
Q

Coxiella burnetii AKA “Q fever”.

A

linked to exposure to animals and their bodily fluids. The MCQ patient is a farmer with a flu like illness.

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11
Q

auscultation signs in pneumonia (4)

A
  • bronchial breath sounds
  • focal coarse crackle s
  • dullness to percussion
  • pleural rub
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12
Q

5 atypical pneumonias

A

1) Legionella
2) Chlamydia psittici
3) Mycoplasma pneumonia
4) Chlamydydophilia pneumonia
5) Q fever - Coxiella burretti

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13
Q

what is an empyema

A

pus in pleural space (yellow & turbid), low glucose & high LDH

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14
Q

what is a lung abscess

A

cavitating area of localised suppurative infection with the lung

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15
Q

what cells do small cell lung cancer arise from?

A

Kulchitsky cells

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16
Q

name the 3 non small cell lung cancers

A
  • Adenocarcinoma
  • Squamous cell carcinoma
  • Large cell lung ca
17
Q

peripherally located lung ca

A

adenocarcinoma

18
Q

what causes horners syndrome

A

Pancoasts tumour - tumour fills supraclavicular fossa @ apex of lung & compresses brachial plexus causing pain radiating down arm

19
Q

triad of horners syndrome

A

ptosis
miosis
anhidrosis

20
Q

what results from pancoats tumour compressing phrenic nerve

A

diaphragmatic paralysis & raised hemidiaphragm on CXR

21
Q

what results from pancoats tumour compressing recurrent laryngeal nerve

A

hoarseness & bovine cough

22
Q

what does squamous cell carcinomas secrete

A

PTH like compound causing hypercalcaemia

23
Q

pathology of squamous cell carcinoma

A

keratic accumulation

24
Q

what may large cell carcinoma secrete

A

B-HCG

25
Q

effect of PTH like peptide secretion from squamous cell carcinomas

& management

A

increase osteoclast activity, increased reabsorption of calcium via kidneys & gut –> hypercalcaemia

manage:
- IV fluids
- Loop diuretics
- Bisphosphonates

26
Q

which lung cancer causes SiADH

A

small cell lung cancer