Interventional Flashcards
how many inches equal 1mm
0.039
what are microwire sizes 2
0.018, 0.014
how many french = 1mm
3 french
diameter in mm =
French/3
french size is external or interal of a catheter?
external
sheath size given by which diameter?
inner diameter
how to predict size of skin hole?
add 2 French to sheath to calculate outer diameter
1 french - how many mm?
0.3mm
wire diameters given in?
inches
wire lengths given in?
centimeters
18G needle will accept what inch guidewire
0.038
19G needle will accept what inch guidewire
0.035
21G needle accepts what inch guidewire
0.018
Standard wire length?
180cm
Long wire length?
260cm
bentson used for what?
thrombus lysing
floppy
lunderquist used for what?
aortic stent grafting
Stiff!
end hole catheter used in what type of injection?
hand only
catheter needed for acute angle? 2
berenstein or headhunter
catheter needed for angle of 60-120?
RDC or cobra
catheter needed for obtuse angle?
recurved catheter.
sidewinder or sos omni
rate 1-2ml/sec for 4-10ml volume
bronchial artery
intercostal artery
rate 4-8ml/sec for 8-15 ml volume
carotid SC renal femoral IMA (higher vol 15-30)
rate 5-7ml.sec for 30-40 volume
celiac
sma
rate 20-30 ml/sec for 30-40 ml volume
aorta
aortic arch
ivc
pulmonary artery
each french gives what ml for flow rate? (with 3F as baseline)
8ml/s
4F rate
16 ml/s
5F rate
24ml/s
What is a contraindication for translumbar aortic puncture?
supraceliac aortic aneurysm
what is typical access level for translumbar aortic puncture?
high: T12 endplate
low: L3
Order of preference for venous access:
RIJ>LIJ>REJ>LEJ
thrombin dose
0.5-0.1ml (500-1000 units)
Self expandable stents are good for what?
superifical locations
balloon expandable stents are good for what?
precise deployment
aortic balloon size
10-15 mm
common iliac balloon size
8mm
external iliac balloon size
7mm
CFA, Prox CFA balloon size
6mm
distal SFA balloon size
5mm
Indications for EVAR
AAA over 5cm
AAA growing >0.5cm in 6 months
landing zone requirements for EVAR
10mm long
<3.2cm wide
<60 degree of toruousity
iliac angulation > what angle may difficult device deployment?
over 90
iliac artery diameter less than what makes for difficult device deployment
less than 7mm
What is a crawford type 4 aneurysm?
12th intercostal space to iliac bifurcation with involvement of renal superior mesenteric and celiac arteries
type 1 endoleak
leak at top or bottom of graft
type 2 endoleak
filling of sac by feeder arery
type 3 endoleak
defect/fracture in graft
type 4 endoleak
porosity of graft
type 5 endoleak
endotension
varicocele tx
coils
uterine fibroid embo tx
pva or microspheres 500-1000 micrometers
generic trauma tx
gel foam
diffuse splenic trauma tx
amplatzer prox to short gastric arteries
pulmonary avm tx
coil
hemoptysis tx
pva particles >325 micrometer
hypervascular spinal tumor tx
onyx
total renal embo
absolute ethanol
partial renal embo
glue
segmental renal artery aneurysm
coils
main renal artery aneurysm
covered stent
peripartum hemorrhage
gel foam
uppper GI blee
egd first then coils
lower gi bleed
microcoils
large vessel permanent
coils
amplatz
large vessel temporary
gelfoam
autologous clot
small vessel permanent 4
particles
liquid sclerosants
thrombin
ethiodol
small vessel temporary
microspheres
gelfoam powder
medial ankle ulcer cause
venous stasis
dorsum foot ulcer cause
ischemic/infected ulcer
plantar foot ulcer cause
neurotrophic ulcer
what type of filter can be placed in smaller veins?
simon nitinol
what type of filter has a superior ned hook for retrieval?
gunther tulip
filter removal volume of clot that filter can come out
less than 1cm cubed
less than what flow for graft does fistulogram need to be performed
<600 cc/min
less than what flow for fistula does fistulogram need to be performed
<500cc/min
Where is problem usually in grafts?
at venous outflow
thrill/bruit in graft?
thrill at arterial anastomosis
low pitched bruit audible throughout graft
where is problem usually in fistulas?
venous outflow
thrill in fistula?
continous thrill at anastomosis
fistula pulsatile?
central stenosis
bruit in fistula?
low pitched in outflow vein
cold painful fingers during dialysis-
steal syndrome
what direction do you access grafT?
antegrade for venous problems
retrograde for arterial
normal pressure difference between the portal vein and IVC
3-6mm Hg
portal HTN pressure in PV
> 10mm Hg or pressure gradient over 5mm Hg
absolute contraindication for TIPS?
elevated right heart pressure (10-12)
what time o stent in tips?
covered
what do you want gradient to be in tips?
less than 12
two relative cotraindications for TIPS
cavernous transformation of poratl vein
severe ecnphalopathy
what is normal flow in tips stent
90-190 cm/s
what is velocity in narrowed tips segment
> 200 cm/s
what is low portal vein velocity
<30cm/s
temporal increase/decrease of what in shunt velocity is abnormal
by more than 50 cm/s
tips PSG of what needs treatment
> 12 mm Hg
where is ips stenosis usually?
hepatic vein or within TIPS tract
what is BRTO for?
treat gastric varices
What segments does the left hepatic duct drain
2 and 4
what segments does the right hepatic duct drain
6,7, 5, 8
what is the most common biliary ariant?
right posterior segment brain draining into the left hepatic duct
hepatic ducts flow in what direction
towards the hilum
hepatic vein flows in what direction
cranially towards the heart
hepatic artery frlows in what direction
towards the periphery
go through what hepatic segments to perform cholecystostomy
5 and 6
what is kehr sign
prolonged shoulder pain s/p liver biopsy cocerning for bleed
what is absolute contraindicated of tace?
decompenseated liver failure
sterile or chemical cholecsystiis in setting of tace?
agent injected into right hepatic artery
yttrium 1/2 life
64 hours
yttrium energy
0.93 MeV
over what size are tumors debulked and not cured?
4 cm
what do o uuse to treat angiodysplasia?
microcoils or PVA particles
PVA particle size in GI bleed?
300-500 microns
drain size for clear fluid
6-8f
drain size for thin pus
8-10 F
drain size for thick pus
10-12 F
drain size for colelctions with debris
12 F+
threshold for size of diverticular absess to be drained
2cm
size indication for renal abscess drain
3-5cm
where should nephrostomy be done on transplant kidney?
anterolateral calyx of the mid to upper pole
projection of choice for lookin at the renals?
LAO
renal aneursym small segmented arteris
coils
renal aneursym main renal artery tx
covered stent
RFA of what size lung tumors is perfomred
1.5 to 5.2 cm
What is the classic catheter used for pulmonary artery angioq
grollman catheter preshaped 7 F
two relative contraindications of pulmonary angiography
elevated right heart pressures over 70 systolic 20 end diastolic; LBBB
where does the anterior medullary artery typically arise from?
right intercostal bronchial trunk
treatment for hemoptysis?
particles over 325 micrometers
treament for fibroids
PVA or embospheres
treatment for postpartum hemorrhage?
gel foam or glue
maxmium dose of lidocaine
4-5 mg per kg
maximum dose for lido with epi?
7mg/kg
