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Title: Patency of coronary side branches covered by an everolimus-eluting bioresorbable vascular scaffold: clinical outcomes and computed tomography scan follow-up
Authors: Ojeda, Soledad
Pan, Manuel
Suárez de Lezo, Javier
Mazuelos, Francisco
Romero, Miguel
Novoa, José
Espejo, Simona
Segura, José
Morenate, Carmen
Medina, Alfonso
Martin, Pedro 
Suarez de Lezo, Jose
UNESCO Clasification: 32 Ciencias médicas
Keywords: Angiography
Bioresorbable vascular scaffold
Multislice computed tomography (MSCT), et al
Issue Date: 2016
Journal: EuroIntervention 
Abstract: Aims: The behaviour of side branches (SBs) covered by a bioresorbable vascular scaffold (BVS) is not well known. This study analysed the rate of side branch occlusion (SBO) immediately after BVS implantation, its clinical impact, predictors of SBO and the fate of such SBs at follow-up. Methods and results: We assessed 140 patients with 346 jeopardised SBs divided into three groups: small (<1 mm, n=181), intermediate (1-2 mm, n=102) and large (>2 mm, n=63). SBO was defined as a TIMI flow 0 or 1. Computed tomography was scheduled at six months for patients with jailed SBs >1 mm. Immediate occlusion occurred in 31 (9%) SBs: 22 (12%) small, 8 (8%) intermediate and one (1.6%) large, while post-procedural SBO was 5.5%. In-hospital events included one thrombosis (0.7%) and eight non-Q-wave myocardial infarctions (6%). After 17±3 months, one patient died (0.7%) and six patients needed repeat revascularisation (4%). Re-evaluation showed no late SBO at 7±3 months. Predictors of SBO were: small SBs (OR 2.06, 95% CI: 1.08-4.63; p<0.05) and stenosis >50% at the origin (OR 17.22, 95% CI: 7.79-38.10; p<0.01). Conclusions: The incidence of SBO and its clinical impact were low when SBs >1 mm were covered. These favourable results were maintained at midterm.
ISSN: 1774-024X
DOI: 10.4244/EIJV11I11A250
Source: EuroIntervention [ISSN 1774-024X], v. 11 (11), p. e1283-e1290, (Febrero 2016)
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