skin ulceration occuring in association with long standing venous stasis is due to

a. chronic infection.
b.peripheral vasculitis.
c.scar formation as a result of capillary disruption.
d.increased sympathetic tone of venules and capillaries.
e. cellular hypoxia resulting from increased interstitial fluid pressure.



Ans:E
The skin changes associated with chronic venous insufficiency are sometimes called venous stasis dermatitis and are the result of long-standing swelling and increased pressure in the veins.

Eventually the constant swelling, decreased blood flow to the area, and increased pressure result in decreased movement of oxygen and nutrients to the skin. The tissue becomes damaged and the skin becomes inflamed (cellulitis). The skin eventually becomes reddish brown, hard, thick, leathery dry, and itchy.