Unformatted text preview: lvular incompetence or
Results blockage within the venous system
advances to involve deep veins.
Skin pigmentation becomes brown,
venous stasis ulcers may develop, aching
and cramping in legs.
Results when valvular incompetence
involves the deep veins.
Venous stasis ulcers are typically present. Venous Insufficiency
obstruction of venous drainage
↑capillary hydrostatic pressure
edema, stasis pain risk of pulmonary
embolus stasis ulcers
and skin changes Deep Vein Thrombosis
Deep Acute venous obstruction due to a thrombus,
Acute trauma, thermal injury, septic state and is most
commonly seen in the lower extremity.
commonly May be life threatening. Injury to the lining of the vein causes decreased
circulation and stimulates the aggregation of
platelets which will occlude the vessel.
platelets Emboli may break away and travel to pulmonary
circulation. Blood Clot in
Vein Deep Vein Thrombosis
Deep Case Study
Carrie, a 22-year-old student, is involved in a skiing accident
and is admitted to the hospital with a broken right femur. Her
only medication at the time of admission is oral contraceptives.
She undergoes orthopedic surgical stabilization is placed in a
cast and confined to bed. Five days after surgery, she develops
sudden onset of sharp chest pain, shortness of breath, and
1. What is the likely cause of Carrie’s pulmonary symptoms?
2. Doppler ultrasonography demonstrated a large thrombus
in a deep vein in the right lower extremity. When a piece of the
thrombus dislodged, why did she develop pulmonary embolism
rather than a stroke?
3. What are Carrie’s risk factors for deep vein thrombosis?
4. What might be found on examination of Carrie’s lower
Thrombophlebitis Deep Vein (DVT)
– Extremity Edema
General leg pain
positive Homan’s sign High Risk of PE Superficial
– local Inflammation warm tender red
red swollen – Collateral veins
minimize Low Risk of PE Lymphatics
Transport volume approx equal to plasma
Transport volume per day.
Returns 25%-50% of the total circulat...
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- Spring '14
- Atherosclerosis, Thrombus