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- W4313478712 abstract "BackgroundThis study aimed to report outcomes of intracoronary brachytherapy (ICBT) in treating drug-eluting stent (DES) in-stent restenosis (ISR) and identify correlated factors.MethodsPatients who underwent ICBT for DES ISR from 2010 to 2021 were included in this single-institution retrospective PCI registry. Patients were treated with balloon angioplasty, laser atherectomy, and/or rotational atherectomy, followed by ICBT at a dose of 18.4-25 Gy delivered at the site of ISR with dose determined by the reference vessel size. The primary outcome was 3-year target lesion failure rate (TLF). Secondary end points were 1-year TLF, target lesion revascularization (TLR), all-cause mortality, and cardiac mortality.ResultsIn total, 330 consecutive patients presented with 345 treated lesions; 70% were male, age was 66 ± 11 years, 55% were diabetic patients, 62% underwent previous bypass surgery, and 89% were placed with at least 2 stent layers at the treated site. The rate of TLF was 18% at 1 year and 46% at 3 years. All-cause mortality and cardiac mortality rates were 19.8% and 12.3% at 3 years. The number of stent layers was associated with 3-year TLF (1 layer, 33.3%; 2 layers, 47.0%, >3 layers, 60.2%; P = .045). Diabetes, repeat ICBT, final percent stenosis, lesion length, and intravascular imaging use were not correlated with the primary outcome. Lower ICBT dose (P = .035) and restenosis <1 year from previous percutaneous coronary intervention (P = .044) were correlated with early (1-year) TLF.ConclusionICBT for recurrent DES ISR provided low recurrence rates at 1 year, which increased substantially by 3 years. Outcomes were most closely correlated with the number of stent layers, but early restenosis and lower ICBT dose adversely affected early TLF." @default.
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- W4313478712 date "2023-01-01" @default.
- W4313478712 modified "2023-10-17" @default.
- W4313478712 title "Intracoronary Brachytherapy for Drug-Eluting Stent Restenosis: Outcomes and Clinical Correlates" @default.
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- W4313478712 doi "https://doi.org/10.1016/j.jscai.2022.100550" @default.
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