SARELGAURMD
Interventional Radiologist
steps in a tips
work in progress, might be missing s$$$
VS style
a good indication: failure of endoscopic management of varices
Get anesthesia on board
Haskel set preferred stock, check to make sure viotorrs are stocked with multiple lengths
prep r abd and R neck wide
first get portal vein access with greb sheath
use greb needle (long 21 gauge trocar needle) to access peripheral right portal vein using US
exchange for greb sheath and park in MPV, can do portography
obtain pressure measurements and record on table (off to patient, open to air to zero, then off to air and on to patient to record waveform)
attach flush IV tubing to portal vein catheter and KVO
now attention to RHV access
Access RIJ using micropuncture
Advance bentson down to RHV
if cannot find RHV with bentson, can try glidewire with glide berenstein, had good success once using glide berenstein over amplatz
once in RHV, can do short dsa through cath to prove RHV access
all i do is record my consciousness and that is enough-sg
exchange for amplatz into RHV and then advance 10F sheath dilator to RHV
at this point will attempt to access RPV using colapinto needle
sometimes i feel like i'm behind the curve, but what is reality?- sg
colapinto needle comes in a sheath like device
keep it sheathed until ready to access RPV
once you hub the device outside patient, needle is exposed
if in RHV, aim forward, if in MHV, aim posterior (Middle->posterior, MP)
once you thrust forward, attach 10 cc syringe with dilute contrast, infuse to remove parenchyma from needle and then withdraw needle with aspiration to find blood
if aspirate blood, infuse contrast to identify hopefully identify portal vein
if in RPV, advance slippy wire AKA roadrunner AKA woadfinder (or Glidewire or even Bentson)
ideally wire travels to RPV and then MPV indicating portal access
then can advance MPA catheter over wire to prove portal access with contrast infusion
then can remove wire and advance stiff wire (Lunderquist vire or superstiff amplatz) to connect RHV and RPV and smooth out curve
at this point usu VS takes 5-10 min break (intermission)
now goal is to dilate parenchymal tract, measure for stent length and deploy stent
using conquest balloons (conquest 40, 8mm x 4cm and 10mm x 4cm)
use inflation device (blowy-uppy) to dilate parenchymal tract, save images of waist, VS doesn't keep balloon up too long, on order of seconds, start 8 then go 10
in order to deploy stent have to get 10F angled sheath down into portal vein so this should happy now with the dilation, can use dilator to facilitate
use sizing catheter to get stent length
proximal aspect of stent should terminate in IVC
stent is always 2 cm uncovered (going in PV) and then 4-8 cm covered, 8 -10 mm (AM prefers 10 mm)
forgot to mention, measure pressures in RA and RHV
to deploy stent
get stent on table
be careful advancing into sheath as can get kinked up
make sure sheath is in portal vein
to deploy noncovered portion, unsheath (pull sheath back)
then pull stent back until it "catches" in the parenchymal tract (CT trick)
then deploy the covered portion with rip cord
now can use baloons to "touch up" internal aspects of stent
do final decent TIPSoGRAM using sheath or long catheter
measure pressures
remove all wires and catheters
hold pressure at RIJ site 5-10 min
sterile dressings
fin
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Things to pull for TIPS:
Haskal Set- will have most shit
10F sheath
12F sheath - if doing Yamada style safety wire thing
MPA catheter
Glidewire
Stiff angled glidewire- poss exch length
Bentson
Super Stiff Amplatz
Lunderquist wire - long
4F angled glidecath 100 cm length (important, for portal access)
5.5F 80 cm fogarty balloon catheter- for Co2 venogram
Need Co2 for injection
6 mm x 4 cm balloon
10 mm x 4 cm balloon
Viatorr stents
Rosch Uchida access set
Marker pig catheter 100 cm (65 may work)
pressure measurement stuff
12F central venous catheter (if leaving one)
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I thik thats it
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how to do a Transjugular Liver Biopsy
AM style
There are a few different kits
the difficulty is in getting access to the RHV
there are at least two kits, AM prefers the Cook set
the biopsy instrument is a sidecut needle with specimen trough, similar to the Tenmo Evolution
Goal of procedure is to get periportal tissue biopsied as well as measure portal and systemic pressures
Start procedure by prepping and draping R neck
Access RIJ using micopuncture technique
Using multipurpose angled catheter and Bentson (or Amplatz) access the RHV and shoot a short venogram to prove it
Once have a wire in the RHV, can advance sheath to this level
AM prefers the 10F sheath from the TIPS kit or at least I saw this used
Can measure RA / RHV pressure through sheath- zero out to the air, then measure pressure.
Can wedge sheath or wedge multipurpose angled catheter through sheath in order to measure wedged HV/ PV pressure
Now to biopsy liver, goal is 3 core specimens
The biopsy instrument goes down the sheath
You hub the device to the sheath and then poke out the tray into the liver
Once you have the tray in the liver, fire the device to get the core
You have to recock the device to retreive the core
roll core off the tray and then place in formalin
Repeat x3
After finished, remove all instruments and hold pressure at the neck for 5-10 Minutes
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How to cath the RHV or HV in general, DK style
Use a MPA / hockey stick cath
go down past the HV and then form catheter
use 10 cc syringe with contrast
start fishing
start looking right but if dont see it, try front back side to side, sometimes the takeoff is anterior
once you fish it, keep advancing the cath while injecting contrast, spin the hockey stick to stay off small branches and tuck it deep in the RHV
switch over for amplatz and then complete rest of procedure
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BRTO
stands for balloon occluded retrograde transvenous obliteration
per JM is an easy procedure in theory
though sounds like big deal
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need isolated gastric varices for this to be successful
did a case where i literally saw the UGIB at a CT scanner, blood in the plastic container
pt came back down intubated
check previous imaging for splenorenal shunt
if no splenorenal shunt, can't do
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procedure:
R groin CFV access
can work thru 7-9F sheath, ansel sheath
use glide and angled catheter (JM prefer angled glidecath) to access splenorenal shunt after cannulating L renal vein
get wire up through into shunt
can perform exchanges to amplatz to drive sheath up to inferior aspect of varix
goal is exchange for 5.5F fogarty occlusion balloon for infusing sclerosant
can use microcatheter for more selective injection
in this case, used sclerosant of gelfoam and STS foam mix, lipiiodol for radiopacity
infuse until appears filled, check for nontarget which could go to the lungs (PE)
once have endpoint remove all devices and hold pressure at groin
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some more BRTO tips from SD
had a case where i started off
used 4F glide cobra into L renal
tons of flow and couldn't see anthing
was recommended using 4-5F glide Sim-1 (huge reverse curve cath)
sat very nicely in L renal
then advance amplatz deep into gonadal i bleeive
then tracked sheath up (12F sheath)
then did angiography and could see the gastrorenal shunt
form there used cobra to catherize the shunt
this stuff aint straighforward- i didn't know where to go 12.18.2016
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TJ LB (argon kit, CL method)
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Start off with micropunc RIJ
advance long amplatz into IVC
advance 9-10F vascular sheath into RA
use MPA (included in kit) and glide or amplatz to cannulate RHV or MHV (or LHV)
once have acess, advance cath deep into vein
can perform venography
advance amplatz deep into vein. in fact according to some, can put back end of amplatz first for more stiffness
Now will advance the sheath with dilator into the vein, to get purchase
now remove dilator and advance the 7F metal cannula and sheath (biopsy sheath) over wire and thru sheath
if in RHV, aim forward, if in MHV aim backward
can pull sheath back slighty to expose biopsy sheath
now advance needle into biopsy sheath
want to make sure needle never crosses capsule. this is what causes bleeding
to obtain core, cock needle
advance needle thru, may get hung up in the cannula curve
use back end of needle to "poke" needle out a bit
then push all the way to core it
save image
do 2-3 cores
thats it
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TJ LB tips
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use the MPA catheter
spin the catheter
use a reg glidewire and spin and prolapse down the large portion of the RHV
make sure your not in the renal
look for the liver shadow to know your in the region of hepatis
you should really be right under the right atrium
use the 10F flexor sheath- 35 cm so you can stay in the RHV
25 cm sheaths are not long enough
do pressures after the biopsy - like LGM
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Portal Vein Embolization- DK
exactly how the shits done
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for RPVE
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acess R oprtal vein posterior peripherally using US sorta like ptc
use 22G chiba and jeff set / pcn / biliary access set
get amplatz to roll into splenic V
upsize to 7F sheath
advance pigtail to splenic vein
do splenoportogram with breath hold ideally lay out the portal
can do addt'l oblique
figure out where to put occlusion balloon ususlaly RPV base
use 7F over wire fogarty balloon cath
blow up balloon and occlude
do occlusion portogram - thru sheath and then thru catheter
dont want occlusion balloon to move or you are f'd
once have baloon up and proof of occlusion infuse sclerosant
321 mixture of air/sotra/lipiodol foam use metal stopcock
infuse sclerosant in this case 10-20 cc
let sit for like 30-45 min
do some still images
when done, do some portography, prove that RPV is thrombosed
then pull out carefully
shoot some gelfoam plegets thru the sheath prior to pull out
hold pressure done
PVE - as it is
this is literally exactly how its done - so dun forget
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TIPS tips:
the point of succesis when the sheath tracks into the portal vein
until then you got nothing
to get the sheath to track through the tract
can use long 8mm balloons as a dilator
inflate baloon, then deflate and push sheath over balloon
use a stiff wire like lunderquist to help straighten out the curves of the tract
often you will lose pushability in the right atrium
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TIPS Check (check of patency and Portosystemic gradient)
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RIJ access
use amplatz or glide to catheterize tips stent and advance wire into portal infow
use pigtail catheter to measure pressures- make sure to measure direct portal and RA
can use pigtail to push through stent without going through sideholes
do flush portogram to eval tips patency
may need to extend stent
may need to perform pharm-mech thrombolysis
thats it
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for difficult TIPS Access for TIPS Check: use reverse curve catheter. For ex: use Sim1 Glidecath- it worked 6/2017
also think about using 10F curved sheath for addt'l support
or coem from groin
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BRTO take 2
done w/ JR in 2018, Oct
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indication - refractory bleeding gastric varices req 6U PRBC, CTA showing splenorenal shunt anatomy
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R groin access
use cobra or Sim cath to cath renal
if use SIm, use pullback trick to engage superior aspect of L renal vein, engage shunt
do some shunt venography
get wire up into shunt, try exch length rosen to switch into 7F 50 cm sheath up into shunt
now in good shape for rest of case
through sheath, use 6F fogarty balloon cath
do occlusion of shunt and then perform shunt venogram to demonstrate gastric varices
eval for possible inflows of concern - connection to heart, lungs, portal
figure out how much contrast needed to opacify majority of gastric varix
then mix up scleroasant - 123 mix of STS, lipiodol, air and infuse slowly into varix under fluoro control
make sure balloon is occlusive or else sclerosant will go systemic - bad
after sclerosant sets for several minutes, occlude the shunt outflow
easiest way is to advance micro through 6F fogarty- then place large microcoils
can use 15-20 mm long microcoils x2-3
carefully let down baloon, can do some repeat venography to demonstrate closure
pull caths and done
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