Disorders of the Veins Flashcards
Normal blood flow depends on
Extremity muscle action unidirectional valves
Phlebitis
inflammation of superficial veins WITHOUT thrombus (clot)
Thrombus
Clot
Embolus
clot “on the move”
Venous Thrombosis
formation of thrombus + inflammation (aka Thrombophlebitis)
SVT
Superficial Vein Thrombosis – Clot in smaller vein
DVT
Deep Vein Thrombosis –Clot in deep vein Requires aggressive treatment
Venous Thromboembolism
VTE WHOLE SPECTRUM of conditions (DVT-PE)
Thrombophlebitis
Venous Thrombosis
Most common venous disorder
Venous Thrombosis
Virchow’s Triad
Hypercoagulability
Damage to the Intima of the Vein Wall
Venuous Stasis
(Airplane Ride)
made up of RBC, WBC, platelets entrapped by fibrin
Thrombus
SVT Risk Factors
IV therapy Varicose veins Pregnancy Chronic venous insufficiency
Dx of SVT
Visual
Goal of SVT Tx
Prevent increase in size and recurrence decrease risk of emboli
DVT Risk Factors
Prolonged Bedrest General Sx (pt 40+ yo) Leg Trauma Previous Vein Insufficiency Obesity Aging Pregnancy/ Oral Contraceptives Malignancies Hematolgical Disorders Long Trips (Economy Class Syndrome)
DVT (Common Sites)
Saphenous Femoral Popliteal Calf veins IVC/ SVC 50% Asymptomatic!
DVT Clinical Manifestations
50% ASYMPTOMATIC The other 50% Unilateral leg edema Extremity pain Skin warm & red Temp 100.4+ + Homan’s Sign
PE
Pulmonary Embolism Clot that travels to lungs Acute/ life-threatening
Chronic Venous Insufficiency
Persistent Edema
Increased Pigmentation
Ulcers (wet and weepy)
Dependent Cynosis
2nd to valvular destruction
Phlegmasia cerulea dolens
SUDDEN Swelling
Pain to leg
Cyanosis
Gangrene can occur
Very Rare
Use for 2 yrs post DVT to support vein wall and valves & decrease extremity swelling
TED Hose
Thromboembolic Disease Hose (TEDs)
Promote venous return, decreases stasis & dilation MD Order needed
3 Complications of DVT
PE Chronic vein insufficiency Phlegmasia cerulea dolens
EPC’s (SCD’s)
NOT used on pt’s with DVT’s Used until a pt is ambulatory
DVT Treatment Requires
Hospitalization
DVT Treatment Positioning
William’s Position Legs elevated above the heart Ensure knees are NOT BENT
Anticoagulants
Do NOT dissolve clots Prevent new clot formation, clot enlargement, and embolization
3 Anticoagulants
Heparin Lovenox Coumadin
Fibrinolytic
body system that dissolves clots
Thrombolytics IV
clot busters –>bleeding
2 types of Sx for DVT
Venous Thrombectomy Inferior Vena Cava Interruption
Venous Thrombectomy
Incise vein, Extract Clot Best for Short Clots
IVC Interruption
Umbrella filter in VC –>prevent passage of emboli to vital organs aka Greenfield or ivc Filter
Modifiable Risk Factors for DVT
Weight Stop smoking Caution w/ BC Activity level Avoid crossing legs at knees TEDs
Teach DVT
s/s of PE & Medications
Varicose Veins (Varicosities)
Dilated, tortuous, SQ veins
Primary Cause of Varicosities
genetic
Secondary Cause of Varicosities
from previous DVT or Valve Injury
Dx of Varicose Veins
Visual
Veins become enlarged and tortuous due to
increased venous pressure
Risk Factors for Varicose Veins
Congenital weakness Obesity Pregnancy Prolonged standing
S/S Varicose Veins
Ache/ pain (pressure/ cramp like) after standing - relieved by walking or elevations Swelling and nocturnal leg cramps may occur Disfigurement
Complications of Varicose Veins
SVT Rupture of Varicose Vein
Duplex Ultra Sound
Detects obstruction & vein reflux (varicose veins)
Sclerotherapy
Injection of sclerosing agent–> inflammation & thrombosis of vein –>eliminates spider veins Ace wrap for 24-72h after–> = pressure on area Local tenderness 2-3 weeks Compression stockings recommended post-procedure
Laser therapy
Tx Varicose Veins Laser heats Hgb, injures endothelium, vessel sclerosis requires 1+ session
Pulsed Light Therapy
Tx Varicose Veins spectrum of light instead of single wavelength
Indications for Sx intervention of Varicose Veins
Recurrent SVT CVI that cannot be controlled conservatively