quiz 5 (covered stents andTIPS) Flashcards
AVeNEW size and # sites? 510k or level 1? Studied graft or fistula?
280 patients, 24 sites, level 1, fistula
What percent AVG lesions have a diameter difference of inflow and outflow?
80% (flared covera)
What percent basilic fistulae have a diameter difference of inflow and outflow?
50% (flared covera)
**Fluency IFU
**1. In stent restenosis of AVF/AVG
**2. Venous outflow of AVG
**Covera IFU
**stenosis in the venous outflow of AVF/AVG
Why does fluency have uncovered ends?
migration resistance
2 reasons why we still sell fluency?
- larger diameters (12 & 13.5)
- pricing
RO markers fluency
4
**# RO markers on flared and straight ends of covera?
**3 flared, 6 straight
Flared end is how much larger in diameter?
3 mm
**Covera dia and shaft sizes, and stent lengths
6-10 mm, 80/120, 30(straight)/40(flared)-100mm
**4 covera stent sizes that are 9F (all other are 8F)
**8x100, 9x100, 10x80, 10x100
What is covera based off of?
lifestent
what is fluency based off of?
e-luminexx
AVeVA size and # sites? 510k or level 1? Studied graft or fistula?
110 patients, 14 sites, 510k, graft
**6 characteristics of covera?
- 2 ePTFE layers encapsulating nitinol stent
- carbon impregnation prevent platelet adhesion
- straight and flared configurations
- Only stent indicated for native fistula
**5. 24% more radial force than viabahn - bareback
What was AVeVA freedom from safety events goal vs end point?
goal was 88%, we achieved 96%
AVeVA TLPP 6 mo? 12 mo? 24 mo?
71%, 54%, 37%
What percent of patients in AVeNEW were restenotic? Cephalic vein placement? What do these numbers mean?
75% restenotic, 76% cephalic, these are challenging patients
AVeNEW TLPP **6 mo? 12 mo? 24 mo? What was Gore’s 6 and 12 mo?
**79%, 58%, 42% Gore: 53 and 30%
AVeNEW TLPP at 6 mo subgroup cephalic vein arch stenting vs PTA alone
75% stent and 38% PTA
What percent accuracy of placement found in AVeNEW?
100%, bitch.
AVeNEW overall TLPP at 6 months?
79% stent vs 48% PTA
what percent of AVeNEW patients received flared covera?
46%
**Fluency dia, working lengths, and stent lengths
**6-13.5mm, 80/117, 4-120
What french size does 12 and 13.5 dia fluency go thru?
10F
**How long are fluency’s uncovered ends?
**2mm
**6 differences between covera and viabahn
**1. 2 layer PTFE vs 1 layer (superior data TLPP)
**2. Individual rings (can fracture)
**3. 24% higher radial force (to stay patent)
**4. thumbwheel deployment vs rip cord (reposition)
**5. heparin vs carbon
**6. bareback
How do you define the access circuit?
From venous anastomosis to the heart
Viabahn dia, stent length
6-10mm, 25-100mm
What does TIPS stand for?
transjugular intrahepatic portosystemic shunt
**In a TIPS procedure, the MD starts in which vein to access which vein?
**Right hepatic to portal vein
The portal vein is what in relation to the right hepatic?
anterior
What does TIPS treat?
variceal bleeding, ascites, it’s last line option
Which two TIPS sets uses Colapinto needle (bent 16G hollow needle) technique?
**Cook (Ring), Gore (TIPS)
*Which two TIPS sets uses RUPS (Rosch-Uchida)(bent cannula *trocar or fine needle) Technique?
**Cook (RUPS), Argon (Scorpion)
**What does the liverty set include?
**12F dilator, 10F dilator, 10F 43cm sheath, steerable cannula, 18G puncture needle, 5F catheter
**What’s the max degree of bend can the liverty steerable cannula achieve
**75 degrees
Puncture depth of liverty?
5cm, with 10mm additional
Primary goal of TIPS
reduce pressure gradient below 12 mmHg or by 50-60% by baseline
**6 key inclusion criteria of AVeVA
**1. thromboses and nonthrombosed grafts
2. graft older than 30 days
3. 1 successful dialysis session
4. stenosis greater than 50%
5. target less than 9cm
6. vessel dia 5-9mm
**Percent of restenotic patients in Lutonix IDE study
**70%
