___ aids in measurements of the acceleration time of the renal arteries.
A. Using a decrease frequency transducer
B. Increasing the PRF
C. Growing the sweep velocity
D. Decreasing rejection - ANS-C. Increasing the sweep speed
Faster sweep speeds produce wider waveforms at the display to facilitate easier size of the AT.
A proximal femoral artery stenosis will motive the __ inside the mid femoral artery.
A. Velocity to boom
B. Acceleration time to boom
C. Reynold's wide variety to lower
D. Acceleration time to decrease - ANS-B. Acceleration time to boom
Acceleration time refers back to the time from the begin of systole to top systole. High
resistance vessels have short acceleration times. Low resistance vessels and regions distal to a
stenosis will exhibit longer acceleration instances.
According to the Appropriate Use Criteria, which of the subsequent is the proper indication for a
screening ABI examination?
A. Affected person with low Framingham danger score
B. 58yo male with DM
C. Diabetic neuropathy with regular pulses
D. Nocturnal pain or cramping with everyday pulses on scientific exam - ANS-B. 58yo male with
DM
Dedicated ABI checks are recommended as a screening device in patients with a femoral bruit
or dwindled pulses, sufferers >50yrs with DM or smoking hx and all sufferers over 70yrs of age.
According to the Appropriate Use Criteria, which of the subsequent is the right indication for a
screening ankle-brachial index exam?
A. 58yo male with diabetes
B. Nocturnal pain or cramping with everyday pulses on scientific examination
C. Diabetic neuropathy with everyday pulses
D. Affected person with low Framingham danger score - ANS-A. 58yo male with DM
Dedicated ABI tests are advocated as a screening device in sufferers with a femoral bruit or
faded pulses, sufferers >50yrs with diabetes or smoking records and all sufferers over 70yrs of
age.
According to the Appropriate Use Criteria, which of the following is the proper indication for an
lower extremity venous duplex exam?
A. Suspected or identified pulmonary embolism
, B. Screening after current orthopedic surgery
C. Advantageous D-dimer take a look at
D. >4 days inside the in depth care unit - ANS-A. Suspected or recognized pulmonary embolism
A LE venous duplex examination may be beneficial in identifying a ability embolic supply in a
patient with suspected or diagnosed PE. A high-quality D-dimer test can imply DVT, however it
is able to additionally indicate numerous unrelated abnormalities. The loss of sensitivity of the
D-dimer take a look at makes it inappropriate indication for a LE venous duplex examination. A
prolonged live inside the ICU, with out other signs related to venous disorder, isn't been strongly
associated with DVT formation. While patients with current hip or knee surgical treatment do
have an increased threat of developing DVT, a venous duplex exam is not endorsed as a
screening examination for all publish-surgical sufferers.
According to the Appropriate Use Criteria, which of the subsequent is an inappropriate
indication for a duplex exam on a hemodialysis fistula?
A. Inability to cannulate at dialysis
B. Ipsilateral arm swelling
C. Palpable thrill on the fistula website
D. 1 month observe up baseline exam submit-intervention - ANS-C. Palpable thrill at fistula
website
Hemodialysis fistulas and grafts will commonly exhibit a thrill over the connection website in the
arm. Absence of the thrill ca suggest an occlusion of the fistula/graft.
According to the Appropriate Use Criteria, which of the subsequent is an beside the point
indication for an upper extremity arterial duplex?
A. Unilateral arm swelling
B. Suspected positional arterial obstruction
C. Unilateral bloodless hand
D. 1 month follow up baseline exam post-intervention - ANS-A. Unilateral arm swelling
Limb swelling is a common symptom of extremity venous disorder, not arterial ailment.
Anticoagulant therapy is a contraindication for:
A. Ultrasound guided thrombin injection
B. A TCD exam
C. A segmental pressure examination
D. Cold immersion trying out - ANS-A. Ultrasound guided thrombin injection
Anticoagulant remedy is a contraindication for pseudoaneurysm remedy. The goal of
compression therapy and thrombin injection is to sell thrombus formation. Anticoagulant remedy
works to reduce thrombus formation.
By dividing the pulsatility index proximal to a stenosis by means of the pulsatility index from
distal to a stenosis, you may evaluate the:
A. Intraluminal diameter
B. Damping thing
C. Distal resistance of the vascular beds