Oedema may be caused by any of the following EXCEPT:

 # Oedema may be caused by any of the following EXCEPT :

A. An increase in the plasma protein concentration 

B. An increase in the capillary hydrostatic pressure 

C. An increase in the capillary permeability 

D Lymphatic obstruction 

The correct answer is A. An increase in the plasma protein concentration.

Oedema is accumulation of fluid in the interstitial tissue spaces and serous cavities.

Causes of oedema 

• Decreased plasma oncotic pressure 

• Increased capillary hydrostatic pressure 

• Increased capillary permeability 

• Lymphatic obstruction 

• Tissue factors (increased oncotic pressure of interstitial fluid, and decreased tissue tension) 

• Sodium and water retention.