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vascular sonography
RVT exam review
203
Medical
Professional
01/30/2014

Additional Medical Flashcards

 


 

Cards

Term
what is the first branch off the aortic arch?
Definition
the innominate/brachiocephalic artery
Term
what is the 2nd branch off the aorta?
Definition
left common carotid artery
Term
what is the 3rd branch off the aorta?
Definition
left subclavian artery
Term
the subclavian artery becomes the ______ artery
Definition
axillary
Term
the axillary artery becomes the ______  artery
Definition
brachial
Term
which artery splits into the radial and ulnar arteries?
Definition
the brachial artery
Term
the aorta arises from the ____ _____ of the heart
Definition
left ventricle
Term
what are the two branches of the ascending aorta?
Definition
right and left coronary arteries
Term
the celiac artery branches into what three arteries?
Definition
left gastric, splenic, common hepatic
Term
which vessel is located 1 cm distal to the celiac artery?
Definition
SMA
Term
which artery feeds the stomach, liver, pancreas, duodenum, and spleen?
Definition
the celiac artery
Term
which vessel feeds the small intestine, cecum, ascending colon, and part of the transverse colon?
Definition
the SMA
Term
which renal vein crosses the aorta anteriorly and is positioned above it's respective artery?
Definition
the left renal vein
Term
does the right renal vein cross over or under the IVC?
Definition
under
Term
which artery supplies the left half of transverse colon, descending colon, iliac, sigmoid, and part of rectum?
Definition
IMA
Term
the three major parietal branches of the abdominal aorta are what?
Definition
inferior phrenic artery, lumbar arteries, and middle sacral artery
Term
what are the hypogastric arteries?
Definition
the internal iliac arteries
Term
which vessels are larger, the internal or external iliac arteries?
Definition
the external iliacs
Term
at the inguinal ligament, the external iliac artery becomes the ________.
Definition
CFA
Term
the common femoral artery divides into what two arteries?
Definition
SFA and Deep femoral artery
Term
the popliteal artery is a distal continuation of the _____.
Definition
SFA
Term
what is the first branch off the distal popliteal artery?
Definition
anterior tibial artery
Term
the anterior tibial artery runs in the front of the leg, and becomes the _____ artery at the ankle.
Definition
Dorsalis pedis artery
Term
the second branch of the distal popliteal artery is the _____.
Definition
tibioperoneal trunk
Term
the tibioperoneal trunk splits immediately into what two arteries?
Definition
posterior tibial, peroneal
Term
the posterior tibial artery extends down the _____ side of the leg.
Definition
medial
Term
the peroneal artery extends toward the ____ to supply the lateral side of the leg and calcaneus.
Definition
fibula
Term
what are the three arteries that make up the plantar arch, which supplies the digits?
Definition
deep plantar artery, lateral plantar artery, dorsal metatarsal arteries
Term
these vessels of microcirculation are 1mm long.
Definition
capillaries
Term
what two types of tissue are the tunica intima made up of?
Definition
smooth endothelium, connective tissue
Term
what two tissue types compose the tunica media?
Definition
smooth muscle, connective tissue
Term
what two tissue types compose the tunica adventitia?
Definition
white fibrous connective tissue, smooth muscle fibers
Term
which arterial layer contains the vasa vasorum?
Definition
the tunica adventitia
Term
each heartbeat pumps about ___ of blood into the aorta.
Definition
70 mL
Term
the greater the energy difference, and the lower the resistance, the _____ the flow rate.
Definition
higher
Term
_____ energy is energy in motion.
Definition
kinetic
Term
______ _______ is gravitational energy.
Definition
hydrostatic
Term
hydrostatic pressure is __ mmHg when supine.
Definition
0
Term
the tendency of objects to maintain their status quo is _____
Definition
inertia
Term
layered, streamline blood flow, where the velocity is highest in the center is termed ______ flow.
Definition
laminar
Term
what are the two types of laminar flow? define them.
Definition

parabolic flow (bullet shaped, velocity highest in center)

plug flow (layers travel at same velocity)

Term
where is plug flow usually seen?
Definition
at vessel origins
Term
the ______the conduit, the higher the pressure
Definition
longer
Term
increased viscosity = ______ velocity
Definition
decreased
Term
what is an example of a patient with high viscosity in the circulatory system?
Definition
patient with an elevated hematocrit (high RBC's)
Term
vessel _______ has the most drastic effect on resistance.
Definition
diameter
Term
what is an example of an inertial loss of energy in the circulatory system?
Definition
changes in direction and turbulent flow (exit of stenosis)
Term

Poiseuille's law defines the relationship between ____, ____, and _____.

 

Definition
pressure, volume flow, resistance
Term
Poiseuille's Law states that as vessel radius decreases, resistance _____.
Definition
increases
Term
the Reynolds number describes the point at which ______ _____.
Definition
turbulent flow
Term
when the Reynolds number exceeds ______, laminar flow becomes disturbed
Definition
2,000
Term
What is another term for the law of conservation of energy?
Definition
the Bernoulli equation
Term
the Bernoulli equation states that as pressure goes up, velocity ______.
Definition
goes down. and vice versa
Term
which region has the highest total energy sum? prestenosis, stenosis, poststenosis
Definition
prestenosis
Term
the fasting SMA is a ___ resistance vessel
Definition
low
Term
the ICA is a ____ resistance vessel
Definition
low
Term
the ECA is a ____ resistance vessel
Definition
high
Term
the vertebral, renal, celiac, splenic, and hepatic arteries are all _____ resistance arteries
Definition
low
Term
the subclavian and iliac arteries are ____ resistance.
Definition
high
Term
all of the extremity arteries are _____ resistance.
Definition
high
Term
the aorta is considered a ____ resistance vessel
Definition
high
Term
normally high resistance bi/triphasic waveforms may become monophasic _____ to a stenosis.
Definition
proximal and distal
Term
extremity arteries will lose pulsatility when vasoconstricted/vasodilated?
Definition
vasoconstricted
Term
T or F. vasoconstriction occurs as a result of stenosis to maintain flow in the high resistance vessels.
Definition
False.  vasodilation occurs.
Term
name four conditions in which the vessels may vasoconstrict or dilate.
Definition
heat, cold, tobacco use, emotional stress
Term
the best vasodilator of high resistance vessels is _____.
Definition
exercise
Term
T or F. increased blood pressure causes vasodilation.
Definition
False.  it causes vasoconstriction
Term
cold vasoconstricted extremities will have ______ signals, while warm vasodilated extremities will have ______ signals.
Definition

pulsatile (vasoconstricted)

continuous/steady (vasodilated)

Term
a hemodynamically significant stenosis occurs with a ___% area reduction or a ___% diamter reduction.
Definition

75% area

50% diamter

Term
in critical stenosis, pressure and flow volume ____.
Definition
decrease
Term
velocities will be dampened _______ to a stenosis.
Definition
proximal
Term
inside a stenosis, the velocities will be ______
Definition
increased
Term
turbulent flow is seen ______ to a stenosis
Definition
distal
Term
spectral broadening will occur at what point?
Definition
entering, exiting, and inside a stenosis
Term
as the diameter of a vessel decreases, what happens to the velocity?
Definition
it increases
Term
pain in the muscles occuring during exercise but subsiding with rest is called what?
Definition
claudication
Term
T or F. claudication is predictable, and it disappears within minutes of exercise cessation.
Definition
true
Term

match the following:

1. buttock claudication---------A. external iliac/CFA dx

2. unilateral buttock claudication------B. iliofemoral dx

3. thigh claudication------------C. femoral/popliteal dx 

4. calf claudication-----------------------D. aortoiliac dx

 

Definition

1. D

2. B

3. A

4. C

Term
Rest pain usually occurs when the limb is sleeping.  symptoms usually occur where?
Definition
forefoot, heel, toes
Term
T or F. rest pain does NOT occur in the calf.
Definition
true
Term

list in order of severity:

ischeic rest pain

necrosis

claudication

Definition
claudication, rest pain, necrosis
Term
the 5 p's are symptoms of what?
Definition
arterial occlusive dx
Term
what are the '7' P's?
Definition

-pain

-pallor

-pulselessness

-parasthesia

-paralysis

-polar (cold)

-purplish (cyanosis- blue foot)

Term
pallor, cyanosis, and rubor are skin color changes associated with _______ disease.
Definition
arterial
Term

a condition of intermittent ischemia of the fingers or toes in response to cold or stress is _______ ______.

 

Definition
Raynaud's phenomenon
Term
diabetics have a higher incidence of occlusive disease of the ____ and ____ arteries
Definition
distal popliteal and tibial
Term
T or F. hypertension is a risk factor for atherosclerosis.
Definition
true
Term
T or F. hyperlipidemia is associated with development of atherosclerosis.
Definition
true
Term
T or F. smoking, age, family history, and male gender are risk factors for atherosclerosis
Definition
true
Term
atherosclerosis occurs in the tunica _____ and tunica _____ layers.
Definition
intima and media
Term
T or F.  an embolism is the obstruction of a blood vessel by a solid substance.
Definition
false- it may be from solid, liquid, or gas
Term
blue toe may be caused by what 3 things.
Definition

-ulcers/atherosclerosis

-arteritis

-embolization

Term
T or F. a true aneurysm is a dilatation of the intima.
Definition
false- all three layers.  a false aneurysm does not contain all wall layers
Term
possible locations for aneurysms are
Definition

-infrarenal aorta

-popliteal artery

-carotid artery

-renal artery

-splenic artery

Term
which aneurysm is commonly bilateral?
Definition
popliteal artery
Term
what are the two major complications of aneurysm
Definition

-rupture

-thrombus/embolization

-dissection

Term
a dissection begins with a tear in which arterial layer?
Definition
-intima
Term
where does a dissecting aneurysm most often occur?
Definition
-thoracic aorta
Term
arteritis often results in ______ of the vessel
Definition

thrombosis

 

Term
the most common type of arteritis is _____?  AKA?
Definition
Buerger's disease (thromboangitis obliterans)
Term
Buerger's disease often occurs in which sex? what is it commonly associated with?
Definition
Men, heavy cigarette smoking
Term
4 types of arteritis are...
Definition

-Takayasu's

-Buerger's disease

-temporal arteritis

-polyarteritis 

Term
what is coarctation of the aorta?
Definition
a congenital stricture of the thoracic aorta
Term
which type of Raynaud's is idiopathic? (3 terms)
Definition

-primary Raynaud's phenomenon

-spastic Raynaud's syndrome

-Raynaud's disease

 

Term
which type of raynaud's consists of normal vasoconstrictive responses of the arterioles superimposed on a fixed arterial obstruction? (2 terms)
Definition

-secondary Raynaud's phenomenon

-obstructive Raynaud's syndrome

Term
which type of Raynaud's is usually bilateral and may be hereditary?
Definition
Primary Raynaud's
Term
which type of Raynaud's has a better prognosis?
Definition
primary Raynaud's
Term
what causes popliteal artery entrapment syndrom?
Definition
compression of the popliteal artery by the medial head of the gastroc muscle.
Term
popliteal entrapment syndrome is found commonly in ____ _____
Definition
young men
Term
popliteal entrapment is bilateral in ___ of the cases
Definition
1/3
Term
what is Livedo Reticularis.  what causes it?
Definition
purple patches on dorsum of foot.  result of dilated capillary/venule filling, NOT arterial obstruction
Term
what causes rubor?
Definition
reactive hyperemia or infection causes damaged/dilated vessels
Term
what causes cyanosis?
Definition
concentration of deoxygenated hemoglobin
Term
what causes pallor?
Definition
deficient blood supply
Term
ulcers that are deep, painful, and found on the ankle/tibia are from venous or arterial insufficiency?
Definition
arterial
Term
what are three examples of trophic changes?
Definition
loss of hair on extremity, shiny/skaly skin, thickened toenails
Term
what causes hair loss on an extremity?
Definition
poor nutritional state from decreased circulation.
Term
T or F. after manual compression, the normal skin color should return immediately upon release.
Definition
TRUE.  an increase in capillary refill time denotes decreased arterial perfusion
Term

paleness of skin caused by elevating the extremity is called ________.  the return of extremity to dependent position causes slow return to normality followed by a red discoloration.  what is this called?

Definition
cadaveric pallor, dependent rubor
Term
what are the five pulse grades?
Definition

0- none

1-weak

2-good

3-strong

4-bounding

Term
T or F.  aneurysms are usually not palpable
Definition
false- they are and the pulses are bounding
Term
a thrill or bruit may indicate one of these three things.
Definition

-poststenotic turbulence

-patent dialysis graft

-AV fistula

Term
T or F.  the peroneal artery cannot be palpated.
Definition
TRUE
Term
what are the five palpable pulses other than brachial and carotid?
Definition

-aorta

-femoral

-popliteal

-dorsalis pedis

-posterior tibial 

Term
are bruits low or high frequency sounds?
Definition
low frequency
Term
what are the three grades of bruit?
Definition

1-mild

2-moderate

3-severe

Term
bruits will usually disappear after a ___% stenosis occurs
Definition
90
Term
CHF may cause ______ waveforms
Definition
dampened
Term
During a doppler exam, what type of u/s is used?
Definition
CW DOPPLER
Term
what is the advantage of auditory doppler?
Definition
it contains all the frequencies
Term
_____ doppler uses a zero-crossing frequency meter display the signals graphically on strip-chart recorder
Definition
analog
Term
analog tends to _____ high velocities and _____ low velocites.
Definition
underestimate, overestimate
Term
spectral analysis exhibits _____ on the vertical axis, and ____ on the horizontal axis.  In addition, ____ is displayed at any point on the graph.
Definition

frequency/velocity, time

-amplitude

Term
the dorsalis pedis artery is recorded where?
Definition
dop of foot
Term
the posterior tibial artery is recorded where?
Definition
medial malleolus
Term
the peroneal artery is recorded at the _____?
Definition
lateral malleolus
Term
true or false.  biphasic waveforms in the  lower extremity can be abnormal
Definition
true
Term
are signals in the lower extremity arteries pulsatile normally?
Definition
yes
Term
monophasic dampened signals can be seen proximal or distal to a stenosis?
Definition
both
Term
after exercise all components of the waveform will normally appear ____ the baseline
Definition
above
Term
abnormally after exercise the waveform may lose it's ____ quality
Definition
phasic. becoming monophasic is abnormal. it should
Term
T or F.  Post exercise waveforms should maintain the same quality as preexercise
Definition
true
Term
the abnormal _______ artery is similar in appearance to the waveforms of abnormal lower extremity arteries
Definition
subclavian
Term
___ resistance flow is pulsatile
Definition
high
Term
inverse damping factor is the ratio of the ______ to the ____.
Definition
distal pulsatility index, proximal pulsatility index
Term
acceleration time is prolonged when there is disease _____ to the probe
Definition
proximal
Term
if the cuff is too large, blood pressure will be artifactually ______
Definition
lower
Term
a narrow cuff will produce an artifactually ____ blood pressure
Definition
higher
Term
what is the purpose of doppler segmental pressure studies?
Definition

to r/o arterial occlusive dx

 

Term
if the blood pressure cuff is too large, the blood pressure will be artifactually _____
Definition
lower
Term
if the blood pressure is too narrow, the blood pressure will be artifactually _____
Definition
higher.
Term
the cuff should be at least _____ greater than the diameter of limb
Definition
20%, or 1.2 times
Term
how does the pressure at the high thigh compare to the highest brachial pressure normally
Definition
30 mmg higher
Term
t or f. segmental pressures are taken bilaterally simultaneously
Definition
false- one leg at a time
Term
which arteries are used at the ankle level?
Definition
posterior tibial and dorsalis pedis
Term
which arteries are used at the below knee/calf region, above knee region, and high thigh region?
Definition
higher of posterior tibial artery and dorsalis pedis
Term
?
Definition
Term
t or f. when taking pressures you must start at the ankle and move proximally
Definition
true
Term
what are the API and AAI?
Definition

ankle/arm pressure index, ankle/arm index (aka's for ABI)

 

Term
an ABI of greater than 1.3-1.5 is indicative of?
Definition
incompressible vessels
Term
what is the ABI range for claudication?
Definition
.5-.9 (below that is rest pain)
Term
what is a normal ABI?
Definition
over 1
Term
a decrease in 20 mmhg between two levels is considered what?
Definition
indicative of obstruction
Term
thigh pressure indeces of less than .8 indicate that ____ is likely.
Definition
proximal occlusion
Term
in foot/toe ulcers that won't heal, toe pressures would be less than ____ typically.
Definition
30mmhg
Term
reactive hyperemia is an alternative method for testing for arterial disease when treadmill testing is contraindicated.  what major difference in results would one normally expect when doing reactive hyperemia?
Definition
a decrease in ankle systolic pressures normally after reactive hyperemia (17-34% decrease).  this does not occur normally after treadmill exercise
Term
with reactive hyperemia, how can you distinguish between single-level and multi-level disease?
Definition
single level disease will be demonstrate less than a 50% drop in ankle pressure, multi-level will be more.
Term
after exercise testing, if ankle pressures reduce to a low level and increase after 2-6 min, it suggests what?
Definition
single level disease.  multilevel if it remains for up to 12 minutes or longer
Term
a loose cuff will produce falsely _______ pressures.
Definition
elevated
Term
a 15-20 mmHg difference between brachial artery pressures would suggest what?
Definition
greater than 50% reduction of subclavian artery
Term
a 15-20mmHg difference in pressure between the upper and forearm suggests what?
Definition
this is normal.
Term
the Allen test evaluates patency of the wrist arteries and the ____.
Definition
palmar arch
Term
T or F. when performing the standard allen test, the sonographer will apply pressure to the ulnar artery.
Definition
false- you compress the radial artery to see if the palmar arch still gets blood supply without it.  you are seeing if you can harvest the radial artery for a graft.
Term
the modified allen test uses what equipment?
Definition
photoplethysmographic (PPG) sensors applied to fingers
Term
what is laser doppler used for?
Definition
to determine the healing potential of a wound/ulcer
Term
for laser doppler, what would a normal SPP value be, indicating a wound is likely to heal?
Definition
greater than 30mmHg
Term
what are four possible techniques that can be used in detecting penile pressures?
Definition

Photoplethysmography, pulse volume plethysmography, strain gauge, and CW doppler (blind techniques, non-imaging)

 

Term
when taking penile pressures, what are the three sites you must record values from?
Definition
dorsal, ventral, and medial aspects
Term
for penile pressures, which technique is most commonly used?
Definition
photoplethysmography
Term
for penile pressure studies, what are the names of the drugs that may be administered?
Definition
Papaverine, Prostoglandin
Term
what are abnormal and normal values for a PBI (Penile brachial index)?
Definition

normal is .75 or greater

 

abnormal is less than .65

Term
a normal penile waveform will exhibit what?
Definition
a sharp, systolic peak with prominent DICROTIC NOTCH.  this is important
Term
which arteries are examined during a penile pressure study?
Definition
cavernous arteries
Term
during a penile pressure study, which veins are evaluated?
Definition
deep dorsal veins
Term
what is a normal velocity in the penile arteries?
Definition
30cm/sec or higher
Term
in the penile veins what can indicate a venous leak?
Definition
an increase to greater than 4 cm/sec
Term
reversal of flow in the veins of the spermatic cord following valsalva maneuver is diagnostic of what condition?
Definition
varicocele
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