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Published in: Clinical Research in Cardiology 5/2020

Open Access 01-05-2020 | Myocardial Infarction | Original Paper

A comparison of procedural success rate and long-term clinical outcomes between in-stent restenosis chronic total occlusion and de novo chronic total occlusion using multicenter registry data

Authors: Seung Hun Lee, Jae Young Cho, Je Sang Kim, Hyun Jong Lee, Jeong Hoon Yang, Jae Hyoung Park, Soon Jun Hong, Rak Kyeong Choi, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Do-Sun Lim, Cheol Woong Yu

Published in: Clinical Research in Cardiology | Issue 5/2020

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Abstract

Background

There have been little data about outcomes of percutaneous coronary intervention (PCI) for in-stent restenosis (ISR) chronic total occlusion (CTO) in the drug eluting stent (DES) era. This study aimed to compare the procedural success rate and long-term clinical outcomes of ISR CTO and de novo CTO.

Methods and results

Patients who underwent PCI for ISR CTO (n = 164) versus de novo CTO (n = 1208) were enrolled from three centers in Korea between January 2008 and December 2014. Among a total of ISR CTO, a proportion of DES ISR CTO was 79.3% (n = 130). The primary outcome was major adverse cardiac events (MACEs); a composite of all-cause death, non-fatal myocardial infarction (MI), or target lesion revascularization (TLR). Following propensity score-matching (1:3), the ISR CTO group (n = 156) had a higher success rate (84.6% vs. 76.0%, p = 0.035), mainly driven by high success rate of PCI for DES ISR CTO (88.6%), but showed a higher incidence of MACEs [hazard ratio (HR): 2.06; 95% confidence interval (CI) 1.37–3.09; p < 0.001], mainly driven by higher prevalence of MI [HR: 9.71; 95% CI 2.06–45.81; p = 0.004] and TLR [HR: 3.04; 95% CI 1.59–5.81; p = 0.001], during 5 years of follow-up after successful revascularization, as compared to the de novo CTO group (n = 408).

Conclusion

The procedural success rate was higher in the ISR CTO than the de novo CTO, especially in DES ISR CTO. However, irrespective of successful revascularization, the long-term clinical outcomes for the ISR CTO were significantly worse than those for the de novo CTO, in terms of MI and TLR.

Graphic abstract

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Metadata
Title
A comparison of procedural success rate and long-term clinical outcomes between in-stent restenosis chronic total occlusion and de novo chronic total occlusion using multicenter registry data
Authors
Seung Hun Lee
Jae Young Cho
Je Sang Kim
Hyun Jong Lee
Jeong Hoon Yang
Jae Hyoung Park
Soon Jun Hong
Rak Kyeong Choi
Seung-Hyuk Choi
Hyeon-Cheol Gwon
Do-Sun Lim
Cheol Woong Yu
Publication date
01-05-2020
Publisher
Springer Berlin Heidelberg
Published in
Clinical Research in Cardiology / Issue 5/2020
Print ISSN: 1861-0684
Electronic ISSN: 1861-0692
DOI
https://doi.org/10.1007/s00392-019-01550-7

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