Author + information
- Cheolmin Leea,b,
- Richard Shlofmitza,b,
- Lei Songa,b,
- Theofanis Tsiamtsiourisa,b,
- Thomas Pappasa,b,
- Antonio Madrida,b,
- Fernando Sosaa,b,
- Mitsuaki Matsumuraa,b,
- Dong Yina,b,
- Jeffrey Mosesa,b,
- Elizabeth Haaga,b,
- Gary Mintza,b and
- Akiko Maeharaa,b
Background: We used optical coherence tomography to evaluate excimer laser coronary angioplasty (ELCA) to treat in-stent restenosis (ISR) due to peri-stent calcium (Ca) related stent underexpansion.
Methods: We studied 53 ISR lesions with >90° peri-stent Ca and compared ECLA (n=21) vs no-ELCA (n=32) prior to balloon angioplasty followed by additional stent implantation in 29.
Results: ELCA use was associated with more Ca fracture. Even though additional stents were implanted less often post-ELCA, its use was associated with greater stent expansion and a larger final lumen (Table), especially in >180° Ca (4.63±1.34 vs 3.20±0.96mm2, P<0.01).
Conclusions: ELCA is effective for treating ISR with underexpansion by disrupting peri-stent Ca facilitating better expansion of the previously implanted stent.
Poster Hall, Hall C
Friday, March 17, 2017, 3:45 p.m.-4:30 p.m.
Session Title: Interventional Cardiology: Angiography, Intravascular Imaging and Interventional CT/MR
Abstract Category: 23. Interventional Cardiology: IVUS and Intravascular Physiology
Presentation Number: 1153-127
- 2017 American College of Cardiology Foundation