[6] Disorders of the Pleura and Mediastinum

Question 1

Best modality to detect Pleural Effusion

Answer 1

CT Scan

Question 2

In Thoracentesis where is the needle usually inserted?

Answer 2

From the beck below the scapula at T7/T8 above the ribs

Question 3

What are the different criteria of Light’s Criteria

Answer 3

Pleural Fluid Protein/Serum Protein > 0.5

Pleural Fluid LDH/Serum LDH >0.6

Pleural Fluid LDH more than 2/3rds normal upper limit for serum

Question 4

Differentiate transudative pleural effusions from exudative pleural effusions using Light’s Criteria

Answer 4

Transudative pleural effusions meet none of the Light’s Criteria