Peripheral venous and arterial disease UNFINISHED SLIDE 10 Flashcards
what is the lower limb venous divided into and where are they found
superficial veins located in the subcutaneous tissue and deep veins underneath the deep fascia with the major arteries.
how does blood move through the lower limb venous system
movement of blood is from superficial to deep veins
name the superficial veins
the great saphenous vein
the small saphenous vein.
name the deep veins
the anterior tibial vein posterior tibial fibular veins popliteal vein femoral vein external iliac vein inferior and superior gluteal veins that empty into the internal iliac vein.
describe the calf muscle pump
gravity contributes to the pooling of blood. whereas the calf muscles contribute to venous return.
blood passes in the superficial through the perforating vein and into the deep vein. when valves are open blood is pushed through to deep veins and when valves are closed to prevent retrograde movement.
soleus and gastrocnemius muscles contribute to pushing blood against gravity by squeezing blood through perforating and deep vein.
what is the venous pressure in foot like during exercise
reduced compared to standing still
what happens in varicose veins
peripheral veinous disease
-valves ineffective and blood movement is slow or even reversed.
walls of the veins weaken and varicosities develop. valve cusps then separate becoming incompetent.
veins tend to be tortuous and twisted
symptoms of peripheral venous disease
patients describe heaviness and aching, muscle cramps and throbbing
along the affected vein there will be: leg cramps, ankle swelling , varicose eczema, haemorrhage( bleeding from damaged veins when dilation is stimulated)
risk factors of peripheral Venous disease
age gamily history female sex number of births occupation- standing a lot
what is superficial vein thrombophlebitis
inflammatory process resulting from a clot in vein
painful erythematous
small clot can form in varicose veins
increased risk of deep vein thrombosis
what happens in chronic venous insufficiency and how can it present as
more advaced state of peripheral venous disease
reflux and or obstruction leads to venous hypertension
present as: lipodermatosclerosis- inflammation and thickening of fat layer under the skin
- haemosiderin staining- brawny oedema. rust looking process due to leaking of RBC and haemoglobin is oxidised by macrophages to. cause this colour.
-venous ulceration