TY - JOUR
T1 - Serail In Vivo Intravascular Ultrasound-Based Echogenicity Changes of Everolimus-Eluting Bioresorbable Vascular Scaffold During the First 12 Months After Implantation
AU - Brugaletta, S
AU - Gomez Lara, Josep
AU - Serruys, PWJC (Patrick)
AU - Farooq, V
AU - van Geuns, Robert Jan
AU - Thuesen, L
AU - Dudek, D
AU - Koolen, J
AU - Chevalier, B
AU - McClean, D
AU - Windecker, S
AU - Smits, PC (Pieter)
AU - de Bruyne, B
AU - Whitbourn, R
AU - Meredith, I
AU - van Domburg, Ron
AU - Sihan, Kenji
AU - de Winter, S
AU - Veldhof, S
AU - Miquel-Hebert, K
AU - Rapoza, R
AU - Garcia Garcia, Hector
AU - Ormiston, JA
AU - Bruining, Nico
PY - 2011
Y1 - 2011
N2 - Objectives This study sought to investigate quantitative and homogeneity differential echogenicity changes of the ABSORB scaffold (1.1) during the first year after implantation. Background The imaging of the ABSORB bioresorbable vascular scaffold degradation by intravascular ultrasound (IVUS) has previously demonstrated diminishing gray-level intensity of the struts over time that can be evaluated by IVUS-based differential echogenicity. The first generation of ABSORB (1.0) showed a 50% reduction in hyperechogenicity at 6 months and restoration of the pre-ABSORB implantation values at 2 years. The second generation of ABSORB (1.1), investigated in the ABSORB B trial, was modified to prolong the duration of luminal scaffolding. Methods A total of 63 patients were examined by IVUS immediately post-implantation and at 6-month (Cohort 81, n = 28) or 12-month (Cohort B2, n = 35) follow-up. IVUS-based tissue composition analysis software was used to quantify changes in hyperechogenicity over time in the scaffolded regions. Relative changes in hyperechogenicity were calculated as: 100 x (% hyperechogenicity at follow-up % hyperechogenicity at baseline)/% hyperechogenicity at baseline. Results At 6- and 12-month follow-up, there was a 15% (from 22.58 +/- 9.77% to 17.42 +/- 6.69%, p = 0.001) and 20% (from 23.51 +/- 8.57% to 18.25 +/- 7.19%, p < 0.001) reduction in hyperechogenicity, respectively, compared with post-implantation values. No difference in hyperechogenicity changes were observed between the proximal, medial, or distal part of the scaffolded segment. Conclusions Quantitative differential echogenicity changes of the ABSORB scaffold (1.1) during the first 12 months after implantation are lower compared with those previously observed with its first generation (1.0), confirming the value of the manufacturing changes and suggesting a slower degradation rate of the scaffold. (J Am Coll Cardiol Intv 2011;4:1281-9) (C) 2011 by the American College of Cardiology Foundation
AB - Objectives This study sought to investigate quantitative and homogeneity differential echogenicity changes of the ABSORB scaffold (1.1) during the first year after implantation. Background The imaging of the ABSORB bioresorbable vascular scaffold degradation by intravascular ultrasound (IVUS) has previously demonstrated diminishing gray-level intensity of the struts over time that can be evaluated by IVUS-based differential echogenicity. The first generation of ABSORB (1.0) showed a 50% reduction in hyperechogenicity at 6 months and restoration of the pre-ABSORB implantation values at 2 years. The second generation of ABSORB (1.1), investigated in the ABSORB B trial, was modified to prolong the duration of luminal scaffolding. Methods A total of 63 patients were examined by IVUS immediately post-implantation and at 6-month (Cohort 81, n = 28) or 12-month (Cohort B2, n = 35) follow-up. IVUS-based tissue composition analysis software was used to quantify changes in hyperechogenicity over time in the scaffolded regions. Relative changes in hyperechogenicity were calculated as: 100 x (% hyperechogenicity at follow-up % hyperechogenicity at baseline)/% hyperechogenicity at baseline. Results At 6- and 12-month follow-up, there was a 15% (from 22.58 +/- 9.77% to 17.42 +/- 6.69%, p = 0.001) and 20% (from 23.51 +/- 8.57% to 18.25 +/- 7.19%, p < 0.001) reduction in hyperechogenicity, respectively, compared with post-implantation values. No difference in hyperechogenicity changes were observed between the proximal, medial, or distal part of the scaffolded segment. Conclusions Quantitative differential echogenicity changes of the ABSORB scaffold (1.1) during the first 12 months after implantation are lower compared with those previously observed with its first generation (1.0), confirming the value of the manufacturing changes and suggesting a slower degradation rate of the scaffold. (J Am Coll Cardiol Intv 2011;4:1281-9) (C) 2011 by the American College of Cardiology Foundation
U2 - 10.1016/j.jcin.2011.08.014
DO - 10.1016/j.jcin.2011.08.014
M3 - Article
C2 - 22192369
SN - 1936-8798
VL - 4
SP - 1281
EP - 1289
JO - JACC-Cardiovascular interventions
JF - JACC-Cardiovascular interventions
IS - 12
ER -