pleural disease Flashcards

(35 cards)

1
Q

parts of the pleura

A

visceral pleura
parietal pleura

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2
Q

pluid fluid

A

straw coloured fluid that is generated through filtration of the proteins from the pleura .

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3
Q

contents of the pleural fluid

A

macrophage
lymphocytes
mesothelial cells

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4
Q

what is pleural pressure

A

pressure that is exerted by the pleural fluid that is mostly negative from negative 3 to negative 5 of water

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5
Q

gradient of pleural pressure

A

most negative at the apex and least negative at the base

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6
Q

pleural effusion

A

collection of fluid into the pleural space

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7
Q

collection of air in the pleura

A

pneumothorax

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8
Q

mass in the pleural space

A

mesothelioma

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9
Q

hemothorax

A

blood in the pleural cavity

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10
Q

types of pleural effusion

A

transudate
exudate
protein count exudate

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11
Q

generation of the pleural fluid

A

pleural lymphatics in the parietal pleura

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12
Q

transudate

A

there is collection of pleural fluid as a result of a non -inflammatory reaction

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13
Q

exudate

A

accumulation of fluid that is of high protein content protein content is more than 3g per decilitre

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14
Q

lights criteria

A

for transudates , ratio of protein in the pleural fluid to serum fluid ratio should be greater than 0.5

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15
Q

causes of transudates

A

organ failure such as liver cirrhosis and left ventricular failure

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16
Q

causes of exudates

A

malignancy ( pulmonary and non -pulmonary)
para-pneumonic effusions
empyema
tuberculosis

17
Q

investigation of pleural effusion

A

ultrasound which is conducted by a qualified technician
chest x -ray
ct of the thorax

18
Q

clinical feature of effusion on examination

A

dull percussion note

19
Q

pleural fluid analysis

A

aspiration
inspection of the fluid
pH bedside ABG machine , biochemistry , microbiology , cytology

20
Q

management of transudate

A

treatment of the underlying cause and this may not need CT imaging

21
Q

management of exudate

A

Exudate : Unless cause identified will need further investigation for eg further imaging , and or pleural biopsy​

22
Q

causes of a pneumothorax

A

1.primary spontaneous which happens on someone with no pre-existing conditions.
2.secondary spontaneous - happens because there is a pre-existing lung disease
3.traumatic caused by injury to chest wall
latrogenic
4.tension - air is so much that it pushes the lung to the other side of the chest wall .there is complete collapse of the lung , there is tracheal shift

23
Q

symptoms of tension pneumothorax

A

chest pain
shortness of breath
rapid heart rate
shallow breathing
anxiety
blue or ashen skin

24
Q

presentation of a pneumothorax

A

sudden chest pain and breathlessness
happens in tall thin and young men
with a history of biopsy /line insertion /mechanical ventilation

25
examination of a chest wall with pneumothorax
breathing fast hypoxia reduced chest wall movements tracheal shift on the x-ray hyperresonance on percussion little or no sound on site where the biopsy is taken from.
26
management of a pneumothorax
patient observation where the pneumothorax is small and patient is well aspiration over 2 cm in size chest drain insertion surgery in recurring events
27
location where the pleural aspiration is carried out
on the safe triangle 2nd intercostal space midclavicular line
28
pleural tumors
mesothelioma -primary malignancy in the pleural cavity and is associated with a poor outcome
29
mesothelioma
aggressive cancer that is common in men , plumbers , electricians , ship builders , power plants , boilers and engines inhaled asbestos fibres reach the pleura and cause inflammation which provokes tumour formation
30
symptoms of mesothelioma
takes longer to manifest latency is longer in old age . breathlessness chest pains weight loss clubbing and signs of pleural effusion
31
staging of a mesothelioma
CT Thorax and Biopsy: needed to stage ( gauge extent eg any distant spread etc )​ ​Thickened pleura, pleural nodules or masses, pleural plaques, an effusion, soft tissue infiltration​
32
what are the causes of transudates
heart failure pericarditis liver disease kidney disease basically factors that cause a reduced protein content and factors that cause a raised venous pressure
33
protein content of transudates
25g/l
34
causes of exudates
protein content above 35 g/l malignancy infection inflammation in a nutshell factors that cause an increase in the permiability of the pleural membrane
35