Ch. 12 Vascular Flashcards
Signs and symptoms of acute arterial insufficiency (5 Ps)
pallor, pulselessness, paralysis, paresthesia, pain
Patient position for lower extremity arteries
supine
Scanning technique of SFA, the SFA becomes ______ as it passes through the _____
popliteal artery, adductor canal
Vascular surgeons find it helful to have the
tibial and pedal branches evaluated
Evaluating the tibial and pedal branches may include
tarsal branch, maleolar branch, deep planter branch
Care must be taken to not compress the vessels, especially in distal segments EXCEPT
peroneal artery
Why is the peroneal artery not a concern for compression
depth
Use of _____ frequency may be needed at what 3 areas
lower / tibioperoneal, prox origin peroneal and posterior arteries, SFA at hunter’s canal (DISTAL)
Ultrasound findings most helpful in selecting _____ site are ____ and ______
anastomotic, vessel wall thickness and degree of calcification
What is useful in low flow states of vessel occlusion
power doppler
What 4 adjustments should you make for low flow states
decrease PRF, decrease wall filter, increase sensitivity, increase persistence
What is the lowest velocity that ultrasound can detect with proper machine adjustments
2 cm/sec
What is used as a primary tool to categorize disease
spectral doppler
What is recorded with spectral doppler in all major vessels
PSV
Doppler waveform taken ____ to a stenosis, documenting ________
distal, post stenotic turbulence