Flashcards in Pleural Effusion Deck (24)
What is a pleural effusion?
Fluid in the pleural space
What can make up the fluid?
What is blood in the pleural space called?
What is pus in the pleural space called?
What is chyle in the pleural space called?
What is chyle?
Fluid made of fat and lymph suspended in chylomicrons
What causes chylothorax?
Fistula formation between lymphatic system and pleural space cause by inflammation
What are the classifications of pleural effusions?
What is a transudate?
Extravascular fluid with low protein content
What causes production of a transudate?
Disruption of oncotic forces
What is the pattern of a transudate pleural effusion?
What can cause a transudate pleural effusion?
What is Meig's syndrome?
Triad of pleural effusion, ascites and an ovarian fibroma
What is an exudate?
Extravascular fluid with high protein content
What causes production of an exudate?
Increased permeability secondary to inflammation
What is the pattern of an exudate pleural effusion?
What can cause an exudate pleural effusion?
What is Dressler's syndrome?
Pericarditis occurring 2 weeks after an MI
How do you differentiate between a transudate and exudate?
Look at protein content of aspirate
Exudate = >35 g/L
Transudate = <25g/L
25-35 use Light's criteria
What is Light's criteria?
Uses serum protein and LDH
- effusion:serum protein >0.5
- effusion:serum LDH >0.6
- effusion LDh > 2/3 upper limit of normal
How do you investigate a pleural effusion?
- autoantibody screen
What do you look for in the aspirate?
Cytology (RBCs, WBCs, malignancy)
How do you manage a pleural effusion?
Treat underlying cause