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Vascular II & Physics II > Vascular Ch. 17 > Flashcards

Vascular Ch. 17 Flashcards

1
Q

Duplex ultrasound can be used to diagnose, localize and estimate age of thrombus. What can not be determined

A

exact age

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2
Q

Thrombus in deep system is usually ____ than in the superficial system and is more likely to be ______

A

larger, life-threatening pulmonary embolism PE

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3
Q

What plays a major role in regulating body temperature

A

superficial veins

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4
Q

______ of patients with DVT may develop symptoms of post-thrombotic syndrome

A

30%

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5
Q

Represents primary mechanism for formation of venous thrombosis

A

virchow’s triad

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6
Q

Virchow’s triad includes

A

venous stasis, vessel wall injury and hypercoagulable state

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7
Q

Formation of thrombosis is determined by

A

imbalance of clotting factors, coagulation inhibitors and fibrinolytic system

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8
Q

Hypercoagulability is associated with various diseases ______, or medications such as _______ or ______

A

cancer, birth control pills, hormone replacement therapy

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9
Q

Bed should be tilted in reversed

A

trendelenberg position

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10
Q

May require _____ transducer pressure to _____

A

increased, compress

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11
Q

Imaging or _____ is not included in most protocols as ______ is rare

A

ATV, thrombosis

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12
Q

Why is thrombosis in ATV rare

A

they do not communicate with the soleal sinus veins

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13
Q

Major storage area for blood in the calf

A

soleal sinus veins

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14
Q

What flow at CFV suggests lack of obstruction

A

phasic

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15
Q

What does continuous flow doppler signal suggest in the CFV

A

IVC or iliac obstruction

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16
Q

Duplex imaging cannot determine _____ but can characterize as ____ or ______

A

exact age, chronic, acute

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17
Q

Acute thrombosis is _____ echogenic or _____ thrombus

A

lightly, hypoechoic

18
Q

Acute thrombus is _____ to vessel wall

A

poorly attached

19
Q

Acute thrombus is the _____ of the thrombus

A

spongy

20
Q

Acute thrombus, dilated vein (when totally obstructed) due to ______

A

increased venous pressure

21
Q

Chronic thrombus is ____ echogenic or _____ thrombus

A

brightly, hyperechoic

22
Q

Chronic thrombus is _____ to vessel wall

A

well attached

23
Q

Chronic thrombus has a _____ texture

A

rigid

24
Q

In chronic thrombus, contract vein (if totally obstructed) will appear

A

contracted

25
Q

Chronic thrombus has large

A

collaterals

26
Q

In a thrombosed vein, continuous flow indicates

A

more proximal obstruction

27
Q

Spectral doppler wf from a CFA vein with thrombus will illustrate a

A

abnormal continuous pattern

28
Q

Pulsatile flow with spectral doppler is abnormal and is associated with

A

arteriovenous fistulae

29
Q

Left common iliac compression (and potentially thrombosis) by the right common iliac artery

A

May-Thurner syndrome

30
Q

Extensive iliofemoral DVT that causes marked swelling of lower extremity with pain, pitting edema and blanching

A

phlegmasia alba dolens

31
Q

Phlegmasia alba dolens is also called

A

milk leg or white leg

32
Q

Signs of phlegmasia alba dolens

A

pain, pitting edema and blanching

33
Q

Extension of phlegmasia alba dolens, causes even more massive swelling, more severe pain and cyanosis of the limb

A

phlegmasia cerulea dolens

34
Q

With phlegmasia cerulea dolens, venous outflow is

A

completely obstructed

35
Q

Phlegmasia cerulea dolens may result in

A

arterial insufficiency and venous gangrene

36
Q

Main conduits for blood returning to heart

A

deep veins

37
Q

Accompany artery of the same name

A

deep veins

38
Q

Higher risk for embolism due to squeezing action of surrounding muscles

A

deep veins

39
Q

Travel lose to skin surface

A

superficial veins

40
Q

Smaller than deeper veins

A

superficial veins

41
Q

What do perforators do

A

connect deep and superficial veins

42
Q

Well’s criteria is a

A

point system for severity

Vascular II & Physics II (21 decks)

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