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hemodialysis
fistulas and grafts
Question | Answer |
---|---|
which veins does not have an accompanying artery in the upper ext? | cephalic and basilic |
What is a lowest vein diameter suitable for AV Fistula? | 2.5mm |
when can a graft be used? | when fistulas have failed and veins are inadequate |
T/F Fistulas are created in the non-dominate arm | TRUE |
Which graft is impenetrable by ultrasound? | Vectra |
what is the diameter for the arterial for it to be used | 2.0mm |
What is the diameter for a vein when using a graft? | 4mm |
High resistant waveform in an artery prox to a graft/fistula is Normal. yes/no | NO! high resistance is a sign of graft occlusion or stenosis |
Digital ischemia is caused by what type of condition? | radial artery steal |
With a graft, where is the most common site of stenosis caused by intimal hyperplasia? | Prox to the anastomosis |
"Normal" grafts/fisulas have low/high velocities and low/high resistance | High velocities 100-400, Low resistance |
High resistance distal to the anastomosis site is Normal? y/n | Yes- Flow should be antegrade and high res. |
Elevated right side heart pressure is a complication of a graft and fistula? y/n | yes- along w stenosis, thrombosis, steal, aneurysms, and infection |