SOLUTIONS (ALREADY PASSED)
What is EF and should the normal value be high or low? - Answer- measure calf muscle
pump function, calculated using the ejection volume (EV) and functional venous volume,
high
Why is it difficult to thoroughly evaluate subclavian and brachiocephalic/innominate
veins? - Answer- overlying bony structures
The three layers of the arterial wall from innermost to outermost: - Answer- tunica
intima, tunica media, tunica adventitia
Examples of arteries with low resistance flow include all of the following except: -
Answer- Subclavian
Turbulent flow with eddy currents and vortices is characteristic of flow: - Answer- post-
stenosis
The three types of energy in a moving fluid include all of the following except: - Answer-
thermal
A severely abnormal PVR is of _______ amplitude - Answer- low
Segmental pressure drops of ______ between two consecutive levels indicates
significant obstruction - Answer- 30 mmHg
Reflux flow lasting more than about _____ confirms incompetent valves into he vein
segment proximal to the sample site - Answer- 0.75 sec
The popliteal vein is formed by the union of the: - Answer- anterior tibial vein and
tibioperoneal trunk
The cephalic vein: - Answer- continues along the lateral border of the bicep muscle
upon expiration: - Answer- the diaphragm ascends and there is decreased blood flow
from the upper extremities
Which veins of the leg can be used for bypass purposes - Answer- greater and lesser
saphenous veins
, Hydrostatic pressure at the level of the heart is: - Answer- 0
The paired radial veins empty: - Answer- lateral hand and forearm
Perforators are short veins that: - Answer- connect the superficial and deep systems
and maintain blood flow in one direction, superficial to deep
the deep venous system carries ____ % of lower extremity outflow venous volume -
Answer- 85
The calf muscles include: - Answer- soleal sinus and gastrocnemius
The three layers of vein walls from innermost to outermost are: - Answer- tunica intima,
tunica media, tunica adventitia
When should you scan the illiac veins int he pelvis? - Answer- -the entire leg is swollen
and there is no thrombosis evident in the infrainguinal venous system
-unilateral, continuous, non-phasic flow in the CFV
Where is the sensor applied for PPG - Answer- - 5-10 cm over the medial malleolus
-not over a varicosity or open wound
Criteria for diagnosis patency in the lower extremity veins includes all of the following
except - Answer- normal venous doppler signals of continuous flow and augmentation
Descending contrast venography involves: - Answer- - serial x-rays taken as material
passes through veins to detect and quantify reversed flow and location of incompetent
valves
- radio-opaque contrast media injected into common femoral vein
Criteria for thrombosis of the upper extremity veins includes all of the following: -
Answer- - in proximal veins, absence of cardiac pulsatility
- in distal veins, absence of respiratory phasicity
- absence of flow, or a filling defect in veins above the axilla
GSV diameter exceeding _____, _____ and _____ at the SFJ, thigh and calf
respectively is highly predictive of reflux - Answer- 9mm, 7.5mm, 5mm
Which differential diagnosis causes pitting edema - Answer- lymphedema
symptoms of chronic DVT include all of the following except: - Answer- warmth of the
extremity
A collection of fluid around the borders of the patella is a: - Answer- Joint effusion