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DVT398-TH2
USIDMS Lower Extremity Venous
Question | Answer |
---|---|
When does all venous flow stop? | deep inspiration & valsalva |
Continuous venous wave correlates with ___? | proximal obstruction |
Flow above the baseline during a reflux study correlates with ____? | venous insufficiency |
What is the Latin term for "runs with arteries"? | venae comitantes |
Spider veins are also known as ____? | lateral subdermic system |
Perforators in the calf are known as ____? | Cockett's perforators |
Venous insufficiency increases or decreases distal venous pressure? | increases |
Name risk factors for DVT | post-op sx, hx of DVT, cancer, obesity, trauma, oral contraceptives, immobility, HTN, pregnancy, CHF, sickle cell anemia |
What is Virchow's triad composed of? | circulatory stasis, vein wall trauma, hypercoagulable state |
What is the appearance of acute DVT? | spongy, not completely compressible, light echogenecity or hypoechoic, dilated vessels, will have abnormal Doppler or abnormal color fill |
What is the ultrasound appearance name for sluggish flow? | Rouleau Formation, appears as "roll of coins", suggests a proximal obstruction |
What does Phlegmasia Alba Dolens look like? | white, massive edema, pale limb, (ileo-femoral thrombosis) |
What does Phlegmasia Cerulea Dolens look like? | cyanotic, massive thigh & calf edema,, (venous outflow obstructed completely) |
What is the appearance of chronic DVT? | highly echogenic, well-attached, rigid texture, visible collaterals, contracted vessel or re-canalization, |
Kleppel-Trenaunay syndrome deal with ____? | Hypoplastic or absent deep veins |
Sturge-Weber syndrome deals with ____? | hypoplastic / absent deep veins, with AVM in cerebral vessels |
Kasabach-Merritt syndrome deals with ____? | hypoplastic / absent deep veins, AVM in cerebral vessels, and capillary hemangiomas |
May-Thurners syndrome deals with ____? | Iliac Vein compression, LEFT = most common |
If there is no signal change with distal augment then ____? | distal DVT |
Primary source of thrombi in LE? | soleal sinuses |