quiz 5 (covered stents andTIPS)

Question 1

AVeNEW size and # sites? 510k or level 1? Studied graft or fistula?

Answer 1

280 patients, 24 sites, level 1, fistula

Question 2

What percent AVG lesions have a diameter difference of inflow and outflow?

Answer 2

80% (flared covera)

Question 3

What percent basilic fistulae have a diameter difference of inflow and outflow?

Answer 3

50% (flared covera)

Question 4

**Fluency IFU

Answer 4

**1. In stent restenosis of AVF/AVG
**2. Venous outflow of AVG

Question 5

**Covera IFU

Answer 5

**stenosis in the venous outflow of AVF/AVG

Question 6

Why does fluency have uncovered ends?

Answer 6

migration resistance

Question 7

2 reasons why we still sell fluency?

Answer 7

1. larger diameters (12 & 13.5)
2. pricing

Question 8

RO markers fluency

Answer 8

4

Question 9

**# RO markers on flared and straight ends of covera?

Answer 9

**3 flared, 6 straight

Question 10

Flared end is how much larger in diameter?

Answer 10

3 mm

Question 11

**Covera dia and shaft sizes, and stent lengths

Answer 11

6-10 mm, 80/120, 30(straight)/40(flared)-100mm

Question 12

**4 covera stent sizes that are 9F (all other are 8F)

Answer 12

**8x100, 9x100, 10x80, 10x100

Question 13

What is covera based off of?

Answer 13

lifestent

Question 14

what is fluency based off of?

Answer 14

e-luminexx

Question 15

AVeVA size and # sites? 510k or level 1? Studied graft or fistula?

Answer 15

110 patients, 14 sites, 510k, graft

Question 16

**6 characteristics of covera?

Answer 16

1. 2 ePTFE layers encapsulating nitinol stent
2. carbon impregnation prevent platelet adhesion
3. straight and flared configurations
4. Only stent indicated for native fistula
   **5. 24% more radial force than viabahn
5. bareback

Question 17

What was AVeVA freedom from safety events goal vs end point?

Answer 17

goal was 88%, we achieved 96%

Question 18

AVeVA TLPP 6 mo? 12 mo? 24 mo?

Answer 18

71%, 54%, 37%

Question 19

What percent of patients in AVeNEW were restenotic? Cephalic vein placement? What do these numbers mean?

Answer 19

75% restenotic, 76% cephalic, these are challenging patients

Question 20

AVeNEW TLPP **6 mo? 12 mo? 24 mo? What was Gore’s 6 and 12 mo?

Answer 20

**79%, 58%, 42% Gore: 53 and 30%

Question 21

AVeNEW TLPP at 6 mo subgroup cephalic vein arch stenting vs PTA alone

Answer 21

75% stent and 38% PTA

Question 22

What percent accuracy of placement found in AVeNEW?

Answer 22

100%, bitch.

Question 23

AVeNEW overall TLPP at 6 months?

Answer 23

79% stent vs 48% PTA

Question 24

what percent of AVeNEW patients received flared covera?

Answer 24

46%

Question 25

**Fluency dia, working lengths, and stent lengths

Answer 25

**6-13.5mm, 80/117, 4-120

Question 26

What french size does 12 and 13.5 dia fluency go thru?

Answer 26

10F

Question 27

**How long are fluency’s uncovered ends?

Answer 27

**2mm

Question 28

**6 differences between covera and viabahn

Answer 28

**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

Question 29

How do you define the access circuit?

Answer 29

From venous anastomosis to the heart

Question 30

Viabahn dia, stent length

Answer 30

6-10mm, 25-100mm

Question 31

What does TIPS stand for?

Answer 31

transjugular intrahepatic portosystemic shunt

Question 32

**In a TIPS procedure, the MD starts in which vein to access which vein?

Answer 32

**Right hepatic to portal vein

Question 33

The portal vein is what in relation to the right hepatic?

Answer 33

anterior

Question 34

What does TIPS treat?

Answer 34

variceal bleeding, ascites, it’s last line option

Question 35

Which two TIPS sets uses Colapinto needle (bent 16G hollow needle) technique?

Answer 35

**Cook (Ring), Gore (TIPS)

Question 36

*Which two TIPS sets uses RUPS (Rosch-Uchida)(bent cannula *trocar or fine needle) Technique?

Answer 36

**Cook (RUPS), Argon (Scorpion)

Question 37

**What does the liverty set include?

Answer 37

**12F dilator, 10F dilator, 10F 43cm sheath, steerable cannula, 18G puncture needle, 5F catheter

Question 38

**What’s the max degree of bend can the liverty steerable cannula achieve

Answer 38

**75 degrees

Question 39

Puncture depth of liverty?

Answer 39

5cm, with 10mm additional

Question 40

Primary goal of TIPS

Answer 40

reduce pressure gradient below 12 mmHg or by 50-60% by baseline

Question 41

**6 key inclusion criteria of AVeVA

Answer 41

**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

Question 42

**Percent of restenotic patients in Lutonix IDE study

Answer 42

**70%