Flashcards in Venous drainage of the lower limb: clinical - varicose veins Deck (5):
What is there within the veins? What is their purpose? what happens when these structures become incompetent? What does it result in?
valves to prevent backflow of blood
blood can flow back into the superficial veins if valves incompetent - results in increased intra-luminal pressure
What happens when there is an increase in intra-luminal pressure within the veins? what is this condition known as?
the veins cannot withstand this increase in pressure causing them to become dilated and torturous
condition known as varicose veins
Where does the venous blood flow in the lower limb?
from skin to superficial veins to deep veins
What can chronic varicose veins lead to?
soft tissue change
greater increase in pressure leads to damage to cells of veins
so blood extrudes into skin
leading to brown pigmentation and ulceration of surrounding tissues