Volume 92, Issue 3 pp. 477-485
Coronary Artery Disease

Incidence, predicting factors, and clinical outcomes of periprocedural myocardial infarction after percutaneous coronary intervention for chronic total occlusion in the era of new-generation drug-eluting stents

Jin-Ho Kim MD

Jin-Ho Kim MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

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Byeong-Keuk Kim MD

Corresponding Author

Byeong-Keuk Kim MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

Correspondence Byeong-Keuk Kim, MD, PhD, Division of Cardiology, Yonsei University College of Medicine, 250 Seongsanno, Seodaemun-gu, 120-752 Seoul, South Korea. Email: [email protected]Search for more papers by this author
Seunghwan Kim MD

Seunghwan Kim MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

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Chul-Min Ahn MD

Chul-Min Ahn MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

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Jung-Sun Kim MD

Jung-Sun Kim MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

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Young-Guk Ko MD

Young-Guk Ko MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

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Donghoon Choi MD

Donghoon Choi MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

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Myeong-Ki Hong MD

Myeong-Ki Hong MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea

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Yangsoo Jang MD

Yangsoo Jang MD

Department of Cardiology, Yonsei Cardiovascular Center, Yonsei University College of Medicine, Seoul, Korea

Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea

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First published: 20 December 2017
Citations: 3

Abstract

Objective

This study aimed to examine predictors and clinical outcomes of periprocedural myocardial infarction (PMI) after chronic total occlusion (CTO) intervention.

Background

There are limited data on the clinical implications of PMI after CTO intervention in the new-generation drug-eluting stent (DES) era.

Methods

We enrolled 337 patients who underwent CTO intervention and met the study criteria. We evaluated the incidence and predictors of PMI, defined as an increase in creatine kinase-MB ≥3× the upper limit of normal (ULN) after intervention and compared the occurrence rates of major adverse cardiac and cerebrovascular events (MACCE, defined as the composite of cardiac death, myocardial infarction, stent thrombosis, target-vessel revascularization, or cerebrovascular accidents) between the PMI and non-PMI groups.

Results

PMI occurred in 23 (6.8%) patients after CTO intervention. Significant independent predictors were previous bypass surgery [odds ratio (OR) = 5.52, 95% confidence interval (CI) = 1.17–25.92; P = 0.03], Japan-CTO score ≥3 (OR = 7.06, 95%CI = 2.57–19.39; P < 0.001), side branch occlusion (OR = 4.21, 95%CI = 1.13–15.66; P = 0.03), and longer procedure time (OR = 4.18, 95%CI = 1.35–12.99; P = 0.01). During a median follow-up of 29.6 months, the PMI group had a significantly higher MACCE rate than the non-PMI group (23.7 vs. 5.6%, P = 0.008 by log-rank test). PMI was an independent predictor of MACCE (HR = 4.26, 95%CI = 1.35–13.43; P = 0.01). The MACCE rate gradually increased in a CK-MB-dependent fashion and was highest in patients with ≥10× ULN (P = 0.005).

Conclusion

Previous bypass surgery, high Japan-CTO score, side branch occlusion, and longer procedure time were strongly related to PMI occurrence after CTO intervention. PMI was significantly associated with worse clinical outcomes in the new-generation DES era.

CONFLICTS OF INTEREST

None

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