EBC - ON DEMAND
OCT evaluation after Tryton
European Bifurcation Club 2011, EBC 2011 – Lisbon, Portugal
OCT Session
OCT evaluation after Tryton
Author: Lino Patrício, MD, H.S. Marta, Lisbon, Portugal
BACKGROUND
The Tryton Side-Branch Stent was designed to treat complex bifurcation lesions (BL). The results of FIM study demonstrated safety and feasibility and low restenosis rate at 6-month angiographic follow-up. Stent malapposition and strut uncovered are very important in follow up.
The IUVANT IVUS study shows:
- Complete coverage and scaffolding of side branch ostium
- Very high stent expansion and large final area without recoil at the carina site
- Very modest in-stent neointimal growth at follow-up
OCT is the best method to validate strut coverage and stent malapposition.
SUMMARY
- TRYTON stent at bifurcation segment had 3.6% of uncovered stent strut.
- There was no malapposed stent strut at AO & OO in MB & SB.
- Only one case had “floating stent strut” at anatomical carinaand this was related with positioning of Zone 2 too proximal into the main branch.
- Tissue covering struts at the OS has mostly similar optical properties as compared to opposite to the ostium, which suggest “normal”.
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Optimal positioning may relate with virtually no floating struts at the ostium