Module 11: pt.2 Peripheral vascular Flashcards
which are deep veins in the legs
Popliteal, femoral.
do most of venous return
how does venous flow happen
1) Contracting skeletal muscle
2) Pressure gradient by breathing
3) Intraluminal valves (1 Direction flow)
What is the “Calf pump/ Peripheral heart”?
When you’re walking you legs muscles are like systole and diastole moving your blood from the bottom
Effective venous return needs
1) Contracting skeletal muscle
2) Competent valves
3) Patent lumen
what is it called when theres a problem with venous return
Venous stasis
What can cause venous stasis
-Dilated veins or varicose have incompetent valves, lumen is so wide that the valve cusps cannot approximate
(Ppl on bed rest don’t move enough)
What would happen if we didn’t have lymphatic vessels
Buildup of fluid in interstitial space (Edema)
What do lymphatic vessels do
1) Conserve plasma proteins that leak out of capillaries
2) immune function
3) Absorb lipids from intestinal tract
What do lymphatic vessels need to be able to move
- Skeletal muscle contraction
- Breath pressure change
- contraction of blood vessels
lymphatic considerations for infants and children
- Well developed at birth grow until 10-11
- They surpass adult size and atrophy
- lrg nodes can give abdominal pain
considerations for pregnant women
- vasodilaton
- uterus growth can upstruct the drainage of iliac veins
- cause swelling in legs, vulva, hemroids
Considerations for older adults
Prolonged bed rest, sitting heart failure increase risk for deep venous thrombosis, and pulmonary embolism, myocardial infarction
-smaller nodes
Pulse scale?
0- no pulse
+1 weak and thready
+2 normal
+3 full and bounding
Why would a brown colour occur
Chronic venous stasis, result of hemosiderin deposits from red blood cell deviation
Where are venous ulcers most likely to be
Usually medial malleolus because of bacterial invasion, poorly drained tissue
What would be a sign of arterial deficit
ulcers on toes, one foot or leg may be cooler
Will deep vein thrombosis always have symptoms?
No half of all patients with DVT have no clinically detectable signs or symptoms
What could bilateral pitting anemia mean
heart failure, diabetic neuropathy
What could unilateral edema mean
Occlusion of deep vein, notice any visible dialated, tortuous veins
What does dependent rubor look like
Occurs with severe arterial insufficiency
What is chronic hypoxia
Loss of vasomotor tone, blood pool in veins
deficiency in oxygen reaching tissues
What is a arterial ulcer from
Buildup of fatty plaques and hardening and calcification of the arterial wall (Arteriosclerosis)
What is a symptom of arterial ulcer
deep muscle pain in calf food with walking and pain at rest
- coolness, pallor, dependent rubor, diminished pulses, systolic bruits, trophic skin, malnutrition and distal gangrene
- ulcers on feet with no bleeding
- common in diabetics
What is a common chronic venous insufficiency
Venous stasis ulcer
