Abstract
Although reported in bare metal stents (BMS) and first-generation drug-eluting stents (DES), little is known about neoatherosclerosis in second-generation DES. We used optical coherence tomography to evaluate neoatherosclerosis among different stent generations. Overall, 274 in-stent restenosis (ISR) lesions (duration from implantation 56.9 ± 47.2 months) in 274 patients were assessed for the presence of neoatherosclerosis. Neoatherosclerosis was identified in 38.7% of lesions (106/274): 23.0% second-generation DES (38/165), 65.1% first-generation DES (54/83), and 53.8% BMS (14/26). In the neoatherosclerosis cohort (n = 106), more stent underexpansion or fracture/deformation was observed in second-generation DES, whereas thrombus, without plaque rupture, or evagination was more common in first-generation DES. In multivariable analyses, duration from implantation >1 year (OR: 2.44, 95% CI 1.12–5.31; p = 0.03), absence of angiotensin-converting enzyme inhibitors/angiotensin II receptor blockers (OR 1.95, 95% CI 1.10–3.44; p = 0.02) or statins at the time of ISR (OR 3.12, 95% CI 1.42–6.84; p = 0.01), and first-generation vs first-generation DES (OR 5.32, 95% CI 2.82–10.10; p < 0.001) correlated with a higher prevalence of neoatherosclerosis. Duration from implantation <1 year (OR 2.17, 95% CI 1.03–4.55; p = 0.04) and thin fibrous cap, thrombus, or rupture (OR 2.72, 95% CI 1.15–6.39; p = 0.02) were independent predictors for acute coronary syndromes presentation. Neoatherosclerosis is an important ISR mechanism, especially in first generation DES.
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The authors thank Dominic P. Francese, MPH, for assistance in preparing the manuscript.
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Lei Song: Research Grant—Boston Scientific. Gary S. Mintz: Consultant—Boston Scientific, ACIST; fellowship/grant support—Volcano, Boston Scientific, InfraReDx; honoraria—Boston Scientific, ACIST. Dong Yin: Research Grant—Boston Scientific. Chee Yang Chin: Honoraria—ACIST. Ajay J. Kirtane: Institutional research grants to Columbia University from Boston Scientific, Medtronic, Abbott Vascular, Abiomed, St. Jude Medical, and Eli Lilly. Manish A. Parikh: Speakers bureau—Abbott Vascular, Boston Scientific, Medtronic, CSI, Corindus; advisory board—Abbott Vascular, Medtronic, Philips. Jeffrey W. Moses: Consultant: Abiomed. Ziad A. Ali: Grant support and Consultant—St. Jude Medical. Richard A. Shlofmitz: Speaker—CSI. Akiko Maehara: Grant support—Boston Scientific, St. Jude Medical for research fellows; consultant—Boston Scientific, OCT Medical Imaging; speaker fee—St. Jude Medical.
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Song, L., Mintz, G.S., Yin, D. et al. Neoatherosclerosis assessed with optical coherence tomography in restenotic bare metal and first- and second-generation drug-eluting stents. Int J Cardiovasc Imaging 33, 1115–1124 (2017). https://doi.org/10.1007/s10554-017-1106-2
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DOI: https://doi.org/10.1007/s10554-017-1106-2