URR vascular - surgery, physiologic exams, procedures prep & reporting All Possible Questions and Answers with complete solution
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URR vascular - surgery, physiologic procedu
Institution
URR Vascular - Surgery, Physiologic Procedu
a patient presents with an order for a lower extremity venous doppler exam to rule out DVT. this patient
should be evaluated in the _____ position in order to _______ - - semi-erect
- increase hydrostatic pressure
when evaluating a suspected thoracic outlet syndrome, a PPG exam can be performed ...
URR vascular - surgery, physiologic
exams, procedures prep & reporting
a patient presents with an order for a lower extremity venous doppler exam to rule out DVT. this patient
should be evaluated in the _____ position in order to _______ - - semi-erect
- increase hydrostatic pressure
when evaluating a suspected thoracic outlet syndrome, a PPG exam can be performed with the sensor
placed on the ____ or a doppler exam can be performed with transducer place _____ - - 2nd digit
- on the radial artery
which of the following will increase the amplitude of a Digital PPG tracing? - warming the patients
foot and toes
a pt presents with dysphagia and hoarseness. the physician suspects Ortner syndrome. what type of
exam will you be performing? - upper extremity arterial duplex exam
indications for ABI: - - femoral bruit
- diminished pulses
- pt's > 50 years with diabetes or smoking hx
- all pt's > 70 years
what system setting would result in a false-positive findings for reflux in the GSV? - high color
persistance settings
what system adjustment is made when changing from a LE extremity arterial exam to a LE venous exam?
- decrease doppler scale
_______ is the gold standard in testing for arterial disease - angiography
,angiography evaluates the _______ axis of the vessel which can lead to ________ of the stenosis -
- longitudinal axis
- over or under-estimation of the stenosis
what is displayed on the y-axis on a doppler tracing? - frequency shift
what is true regarding intraoperative duplex evaluation during a carotid endarterectomy? - -
highest probe frequency is preferred
- technique is used to assess immediate flow changes
- probe is placed in direct contact on the vessel so sterile technique is required
radio frequency venous ablation requires: - sterile technique
a LE venous doppler that is performed for suspected DVT should be performed with the pt in the _____
position - reverse trendelenburg
when evaluating a pregnant patient for DVT, the patient should be placed in the ______ position -
left oblique or decubitus
which blood vessel is commonly evaluated with doppler to obtain the thigh pressure when performing a
segmental pressure exam? - distal calf artery with highest ankle pressure
if your give NPV, PPV, sensitive and specificity how do you find accuracy? - accuracy falls
- between the NPV and PPV
and
- between specificity and sensitivity
which modality is preferred to diagnose FMD in the circle of willis? - angiography
if new research shows that the minimum velocity criteria used to diagnose >60% renal artery stenosis
, If the AT is >140ms in both common femoral arteries:
a.) bilateral internal iliac disease is suspected
b.) flow is considered normal
c.) unilateral external iliac disease is suspected
d.) aortic disease is suspected - d.) aortic disease is suspected
a proximal femoral artery stenosis will cause the _________ in the mid femoral artery -
*acceleration time to decrease*
(low resistant vessels and areas distal to stenosis will have longer AT)
pulsatility index can be used to describe: - the amount of variation in the velocity during the
cardiac cycle
D-dimer levels are most accurate for predicting: - the absence of DVT
which technique can be used to assess the presence and timing of reflux in multiple vessels
simultaneously? - color doppler
which exam would be improved by the administration of simethicone prior to the ultrasound? -
renal artery duplex
- medication that reduces bowel gas
a pt with a recent subdural hematoma. what is physician looking for on the TCD exam? -
vasospasm
the LE segmental pressure exam is most commonly performed with an _____ to obtain the doppler
signal for the pressure measurements of the ankle - 8-10 MHz CW doppler probe
why is an acute arterial occlusion in the lower extremity considered a critical finding? - collaterals
have not had time to form to redistribute the blood
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