peripheral vascular system Flashcards
Do arteries stretch or recoil during systole?
stretch with systole
What does outflow of blood and What does Inflow?
Arteries -outflow
Veins-inflow
What are in arteries that control the amt of blood delivered to tissues?
Muscle fibers (VSM)
What is the major artery supplying arm?
brachial artery
Partial blockage creates an insufficient supply,
and _______ may be apparent only at exercise
when oxygen needs increases
ischemia
What is the major artery in leg?
femoral artery
What is ischemia?
deficient supply of oxygenated blood to a tissue caused by obstruction of a blood vessel
What is the direction flow of the veins?
opposite of artery
What is responsible for most of venous return ?
superficial veins in subcutaneous tissue in arm
Do we have more arteries or veins?
veins
What are the three types of veins in the leg?
deep vein
superficial vein
perforators
What conducts most of the venous return in the legs?
Deep veins
what are the two superficial veins in the legs?
great and small saphenous veins
What are perforators?
Veins that connect deep and superficial veins
Are veins low pressure system or high pressure system?
low pressure system
What mechanism do the legs use to help veins pump?
calf pump or peripheral heart
What are lymphatics?
catches what falls out of the capillaries
What are lymph nodes?
Lymph nodes are small, oval clumps of lymphatic
tissue located at intervals the vessels
Vessels drain into two main trunks, which empty
into the venous system at the subclavian veins;
the _____ and the ______
the right lymphatic duct and the thoracic duct
What are the functions of lymphatic system?
Conserve fluid and plasma proteins that leak out of
capillaries
Form a major part of immune system that defends
body against disease
Absorb lipids from the small intestine
What is arteriosclerosis?
peripheral blood vessels grow more rigid; productes rise in systolic pressure
What are subjective data for PV system?
- Leg pain or cramps
Skin changes on
arms/legs
Swelling: edema
Lymph node
enlargement
Medications (oral
contraceptives, HRT)
Smoking history
What does a doppler do?
Use this device to detect a weak
peripheral pulse, to measure low blood
pressure or blood pressure in lower
extremity
What are the chronic PV diseases?
Arterial Insufficiency
Venous Insufficiency
Varicose Veins
What are acute PV disorders?
Arterial Obstruction (Arterial Disorder)
Venous Thrombosis or Thrombophlebitis (Venous Disorder)
What are the 5 P’s warning signs?
Acute Arterial Obstruction (5 P’s)
Pain
Pallor
Pulselessness
Paraesthesia
Paralysis
What are the symptoms of acute thrombosis?
Superficial
Redness, thickening, tenderness along a vein
Deep
Swelling (calf/thigh measurement)
Calf Pain
?Homan’s Sign??
where to feel for femoral pulse?
below inguinal ligament
how to palpate for popliteal pulse?
curl finger around popliteal fossa
How to palpate for posterior tibial?
curve fingers around medial malleolous
what is the strongest risk factor for PAD?
smoking
Who is more at risk for PAD?
african americans and women
