ESKD- Stents Home Study Flashcards
What is a stent?
metal or plasti tube inserted into the lumen of an anatomic vessel or duct to keep the passageway open
unlike covered stents, the best data for bare metal stents is __________.
level 3 data, not studied in AV access due to lack of clinical evidence
what is the biggest problem with bare metal stents?
in stent restenosis
PTA & BMS clinical takeaway
- graft primary patency; 3 % to 23% (PTA), and 12% to 12% (BMS)
-access circuit priary patency; 25% to 63% (PTA), and 27% to 63% (BMS)
most stents placed if not all are _________.
- self expanding stents
-expands to pre-set diameters when exposed to body temperature
balloon expandable stent
- compression resistence (radial hoop strength)
- ability of the stent to withstand radial compressive force
- accuracy
self- expanding stent (nitinol)
- compression resistence (radial hoop strength)
- radial force (chronic outward force)
- the radial outward force the stent exerts in a constant attempt to achieve and maintan its nominal diameter
Stent designs
- multiple strut rings connectedto form a long tube
- various strut lengths
- various strut connections designs
stent flared ends
- common on BD stents
- faster wall apposition
-migration resistence
straight stent shave a higher risk of _________.
moving during deployment since they don’t have wall apposition
electropolishing
- improve corrosion resistence
- hopefully reduce intimal hyperplasia growth
coaxial catheter delivery system
- 2 catheters that slide over eachother
- BSC epic
triaxial catheter delivery system
- three cathethers: a third outer sheath that isolates the two inner catheters
- 5f lifestent bard
- abbott absolute pro
- MDT everflex
E-luminexx indication
- commonly used in AV access but not indicated for this work
E- luminexx vascular stent
- treatment of illiac occlusive disease
- 7-10 mm diameters
- 20-100 mm lengths
E-luminexx biliary stent
- treatment of malignant stenosis in the biliary tree
- 4-14 mm diameters
- 20- 120 mm lengths
common on a lot of bare metal stents, including venovo, the generational stent lock helps
the stent moving from deployment
the E-luminexx has 3 radiopaque marker lines where?
- 2 markers are at either end of the stent
- 1 moving marker over the catheter itself when being deployed
E-luminexx illiac clinical study
posterior probability: 99.24% that the 9 month MACE rate was < 25%
E-luminexx PerforMAXX Grip deployment options
- trigger method
- side method
- combination deployment
- conventional method
Lifestar Vascular stent
- treatment of illiac occulusive disease
- 7- 10 mm diameters
- 20- 100 mm lengths
Lifestar biliary stent
- treatment of malignant stenosis in the biliary tree
- 6- 14 mm diameters
- 20- 120 mm lengths
Cordis SMART stent
- biliary, illiac, & SFA
- 6F & 7F
- 6 tantalum markers
- no stent lock
- handle with dial and slide
Medtronic Protege GPS Biliary stent
- biliary
- 6F
- 4 tantalum markers
- EX PRT stent lock system
- pin & pull deployment with ergonomic finger grips
