Long-term (≥2 years) follow-up optical coherence tomographic study after sirolimus- and paclitaxel-eluting stent implantation: Comparison to 9-month follow-up results

Tae Hoon Kim, Jung Sun Kim, Byoung Keuk Kim, Young Guk Ko, Donghoon Choi, Yangsoo Jang, Myeongki Hong

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Abstract

Many studies have demonstrated that late or very late thrombosis after drug-eluting stent (DES) implantation may be related with incomplete neointimal coverage. We investigated long-term (≥2 years) results of neointimal coverage following sirolimus-eluting stent (SES) and paclitaxel-eluting stent (PES) implantation using optical coherence tomography (OCT). A follow-up angiography with OCT examination was performed in 29 patients with 32 lesions for more than 2 years (group 1; 1,066 ± 381 days) and 101 patients with 104 lesions at 9 months (group 2; 273 ± 33 days) after the index procedure. The status of neointimal coverage and stent apposition was evaluated. The number of stents with completely covered struts was higher (25.0% in group 1 vs. 13.5% in group 2, P = 0.12). The percentage of uncovered struts (5.4 ± 7.5% in group 1 vs. 8.5 ± 11.6% in group 2, P = 0.19) and that of malapposed strut (0.5 ± 1.4% vs. 1.5 ± 4.2%, respectively, P = 0.19) were lower in group 1. While the percentage of uncovered and malapposed struts were quite similar in the PES groups between the two groups (P = 0.54 and 0.65, respectively), there were lower trends in the percentage of uncovered and malapposed struts in the SES group (P = 0.09 and 0.09, respectively). In conclusion, incomplete neointimal coverage was still observed in a majority of DESs and considerable struts were not covered with neointima even at more than 2 years after DES implantation. The pattern of neointimal coverage between 9-month and 2-year appeared to be somewhat different between PES and SES.

Original languageEnglish
Pages (from-to)875-881
Number of pages7
JournalInternational Journal of Cardiovascular Imaging
Volume27
Issue number6
DOIs
Publication statusPublished - 2011 Jul 1

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Sirolimus
Paclitaxel
Stents
Drug-Eluting Stents
Optical Coherence Tomography
Neointima
Angiography
Thrombosis

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

Cite this

@article{7b96015d5e32450e870613418f99aa49,
title = "Long-term (≥2 years) follow-up optical coherence tomographic study after sirolimus- and paclitaxel-eluting stent implantation: Comparison to 9-month follow-up results",
abstract = "Many studies have demonstrated that late or very late thrombosis after drug-eluting stent (DES) implantation may be related with incomplete neointimal coverage. We investigated long-term (≥2 years) results of neointimal coverage following sirolimus-eluting stent (SES) and paclitaxel-eluting stent (PES) implantation using optical coherence tomography (OCT). A follow-up angiography with OCT examination was performed in 29 patients with 32 lesions for more than 2 years (group 1; 1,066 ± 381 days) and 101 patients with 104 lesions at 9 months (group 2; 273 ± 33 days) after the index procedure. The status of neointimal coverage and stent apposition was evaluated. The number of stents with completely covered struts was higher (25.0{\%} in group 1 vs. 13.5{\%} in group 2, P = 0.12). The percentage of uncovered struts (5.4 ± 7.5{\%} in group 1 vs. 8.5 ± 11.6{\%} in group 2, P = 0.19) and that of malapposed strut (0.5 ± 1.4{\%} vs. 1.5 ± 4.2{\%}, respectively, P = 0.19) were lower in group 1. While the percentage of uncovered and malapposed struts were quite similar in the PES groups between the two groups (P = 0.54 and 0.65, respectively), there were lower trends in the percentage of uncovered and malapposed struts in the SES group (P = 0.09 and 0.09, respectively). In conclusion, incomplete neointimal coverage was still observed in a majority of DESs and considerable struts were not covered with neointima even at more than 2 years after DES implantation. The pattern of neointimal coverage between 9-month and 2-year appeared to be somewhat different between PES and SES.",
author = "Kim, {Tae Hoon} and Kim, {Jung Sun} and Kim, {Byoung Keuk} and Ko, {Young Guk} and Donghoon Choi and Yangsoo Jang and Myeongki Hong",
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T1 - Long-term (≥2 years) follow-up optical coherence tomographic study after sirolimus- and paclitaxel-eluting stent implantation

T2 - Comparison to 9-month follow-up results

AU - Kim, Tae Hoon

AU - Kim, Jung Sun

AU - Kim, Byoung Keuk

AU - Ko, Young Guk

AU - Choi, Donghoon

AU - Jang, Yangsoo

AU - Hong, Myeongki

PY - 2011/7/1

Y1 - 2011/7/1

N2 - Many studies have demonstrated that late or very late thrombosis after drug-eluting stent (DES) implantation may be related with incomplete neointimal coverage. We investigated long-term (≥2 years) results of neointimal coverage following sirolimus-eluting stent (SES) and paclitaxel-eluting stent (PES) implantation using optical coherence tomography (OCT). A follow-up angiography with OCT examination was performed in 29 patients with 32 lesions for more than 2 years (group 1; 1,066 ± 381 days) and 101 patients with 104 lesions at 9 months (group 2; 273 ± 33 days) after the index procedure. The status of neointimal coverage and stent apposition was evaluated. The number of stents with completely covered struts was higher (25.0% in group 1 vs. 13.5% in group 2, P = 0.12). The percentage of uncovered struts (5.4 ± 7.5% in group 1 vs. 8.5 ± 11.6% in group 2, P = 0.19) and that of malapposed strut (0.5 ± 1.4% vs. 1.5 ± 4.2%, respectively, P = 0.19) were lower in group 1. While the percentage of uncovered and malapposed struts were quite similar in the PES groups between the two groups (P = 0.54 and 0.65, respectively), there were lower trends in the percentage of uncovered and malapposed struts in the SES group (P = 0.09 and 0.09, respectively). In conclusion, incomplete neointimal coverage was still observed in a majority of DESs and considerable struts were not covered with neointima even at more than 2 years after DES implantation. The pattern of neointimal coverage between 9-month and 2-year appeared to be somewhat different between PES and SES.

AB - Many studies have demonstrated that late or very late thrombosis after drug-eluting stent (DES) implantation may be related with incomplete neointimal coverage. We investigated long-term (≥2 years) results of neointimal coverage following sirolimus-eluting stent (SES) and paclitaxel-eluting stent (PES) implantation using optical coherence tomography (OCT). A follow-up angiography with OCT examination was performed in 29 patients with 32 lesions for more than 2 years (group 1; 1,066 ± 381 days) and 101 patients with 104 lesions at 9 months (group 2; 273 ± 33 days) after the index procedure. The status of neointimal coverage and stent apposition was evaluated. The number of stents with completely covered struts was higher (25.0% in group 1 vs. 13.5% in group 2, P = 0.12). The percentage of uncovered struts (5.4 ± 7.5% in group 1 vs. 8.5 ± 11.6% in group 2, P = 0.19) and that of malapposed strut (0.5 ± 1.4% vs. 1.5 ± 4.2%, respectively, P = 0.19) were lower in group 1. While the percentage of uncovered and malapposed struts were quite similar in the PES groups between the two groups (P = 0.54 and 0.65, respectively), there were lower trends in the percentage of uncovered and malapposed struts in the SES group (P = 0.09 and 0.09, respectively). In conclusion, incomplete neointimal coverage was still observed in a majority of DESs and considerable struts were not covered with neointima even at more than 2 years after DES implantation. The pattern of neointimal coverage between 9-month and 2-year appeared to be somewhat different between PES and SES.

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