venous disease Flashcards
Have a clear understanding of the role and function of the venous system in the lower limbs.
veins have a wide diameter in terms of their lumen to outer diameter ratio. limited elastic fibres and contain valves. makes them much better at being a low pressure system and returning blood to the heart
Recognise the difference between superficial and deep venous incompetence.
superficial- long and short saphenous vein
deep venous system- tibial, popliteal and femoral
Be aware of the complications associated with venous incompetence and recognise the changes of chronic venous insufficiency.
Have a basic understanding of what investigations are required to confirm the diagnosis and the different treatment options.
Have a basic understanding of problems that may arise when the lymphatic system in the lower limbs is diseased.
how do veins get blood back to the heart
deep venous system uses the calf pump where it acts with the popliteal vein to push against the blood and compress the vein to push against the blood to get venous return
where does dorsal vein drain too
great saphenous vein
function of perforator veins
transport blood from superficial to deep venous system
where is the sole of the foot drained
short saphenous vein
what is varicose veins
damage to valves of superficial within venous system. blood can flow back down the leg and cause oedema.
why Is oedema bad in your legs
increases the distance between the veins and the tissues and therefore impaired tissue perfusion. So impaired healing, inflammation and further tissue damage
how will patients present with venous disease
distended veins if mild which can progress to symptomatic Venous disease which is itching and burning.
ulceration, swelling, discolouration in the skin
describe the trendeleburg test
lie patient flat on examination table and raise leg above the level of the heart and press at the level of the saphenofemoral junction. then ask patient to stand if vein doesn’t distend its an incompetent valve
describe tap test
patient lays down and place hand on the sapenofemoral junction and tap on the long saphenous vein above the knee. if you can feel transmission then likely a backflow of blood
venous duplex ultrasound scanning
shows size of vessel, flow within it and whether or not there is any backflow. usually done in secondary care