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Long-term Outcomes of Clopidogrel Monotherapy versus Prolonged Dual Antiplatelet Therapy beyond 12 Months after Percutaneous Coronary Intervention in High-risk Patients

Kim DY, Cho SW, Park KT, Ahn JH, Park TK, Jang YH, Choi KH, Lee JM, Yang JH, Song YB, Choi JH, Choi SH, Gwon HC, Lee SH, Hahn JY

Background: There are no data on comparison between clopidogrel monotherapy and prolonged dual antiplatelet therapy (DAPT) in patients at high-risk undergoing percutaneous coronary intervention (PCI). Methods: Of 2,082 consecutive patients undergoing...
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Clinical Outcomes of Ticagrelor in Korean Patients with Acute Myocardial Infarction without High Bleeding Risk

Park KH, Jeong MH, Kim HK, Ki YJ, Kim SS, Choi DH, Koh YY, Ahn Y, Kim HS, Gwon HC, Rha SW, Hwang JY, on behalf of the KAMIR-NIH registry investigators

Background: Although ticagrelor is known to increase the bleeding risk compared to clopidogrel in East Asian patients, its clinical benefits in patients with acute myocardial infarction (AMI) without high bleeding...
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Clinical Implications of Early Exercise Treadmill Testing after Percutaneous Coronary Intervention in the Drug-eluting Stent Era

Cho SW, Yang JH, Park TK, Lee JM, Song YB, Hahn JY, Choi JH, Gwon HC, Lee SH, Choi SH

Background: Limited data are available on the clinical meaning of early routine exercise treadmill testing (ETT) after percutaneous coronary intervention (PCI) in the drug-eluting stent era. We aimed to determine...
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Comparison of Exercise Performance and Clinical Outcome Between Functional Complete and Incomplete Revascularization

Kim J, Lee JM, Choi SH, Choi KH, Park TK, Park SJ, Yang JH, Song YB, Hahn JY, Jang MJ, Koo BK, Gwon HC

BACKGROUND AND OBJECTIVES: Although percutaneous coronary intervention (PCI) is recommended to improve symptoms in patients with stable ischemic heart disease (SIHD), improvement of exercise performance is controversial. This study aimed...
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One-Year Clinical Outcomes between Single- versus Multi-Staged PCI for ST Elevation Myocardial Infarction with Multi-Vessel Coronary Artery Disease: from Korea Acute Myocardial Infarction Registry-National Institute of Health (KAMIR-NIH)

Ahn KT, Oh JK, Seong SW, Jin SA, Lee JH, Choi SW, Jeong MH, Chae SC, Kim YJ, Kim CJ, Kim HS, Cho MC, Gwon HC, Jeong JO, Seong IW, Other Korea Acute Myocardial Infarction Registry Investigators

BACKGROUND AND OBJECTIVES: Although complete revascularization is known superior to incomplete revascularization in ST elevation myocardial infarction (STEMI) patients with multi-vessel coronary artery disease (MVCD), there are no definite instructions...
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Clopidogrel versus Aspirin after Dual Antiplatelet Therapy in Acute Myocardial Infarction Patients Undergoing Drug-Eluting Stenting

Sim DS, Jeong MH, Kim HS, Gwon HC, Seung KB, Rha SW, Chae SC, Kim CJ, Cha KS, Park JS, Yoon JH, Chae JK, Joo SJ, Choi DJ, Hur SH, Seong IW, Cho MC, Kim DI, Oh SK, Ahn TH, Hwang JY, on behalf of the KAMIR-NIH registry investigators

BACKGROUND AND OBJECTIVES: There is a paucity of data regarding the benefit of clopidogrel monotherapy after dual antiplatelet therapy (DAPT) in patients treated with drug-eluting stents (DES). This study compared...
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Clinical Implications of Thrombocytopenia at Cardiogenic Shock Presentation: Data from a Multicenter Registry

Lee HH, Hong SJ, Ahn CM, Yang JH, Gwon HC, Kim JS, Kim BK, Ko YG, Choi D, Hong MK, Jang Y

Purpose: Thrombocytopenia (platelet count
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Mildly Elevated Cardiac Troponin below the 99th-Percentile Upper Reference Limit after Noncardiac Surgery

Park J, Hyeon CW, Lee SH, Kim J, Kwon JH, Yang K, Min JJ, Lee JH, Lee SM, Yang JH, Song YB, Hahn JY, Choi Jh, Choi SH, Kim K, Ahn J, Gwon HC

Background and Objectives: In patients with perioperative cardiac troponin (cTn) I below the 99th-percentile upper range of limit (URL), mortality according to cTn I level has not been fully evaluated....
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Pre-hospital delay and emergency medical services in acute myocardial infarction

Lee SH, Kim HK, Jeong MH, Lee JM, Gwon HC, Chae SC, Seong IW, Park JS, Chae JK, Hur SH, Cha KS, Kim HS, Seung KB, Rha SW, Ahn TH, Kim CJ, Hwang JY, Choi DJ, Yoon J, Joo SJ, Hwang KK, Kim DI, Oh SK, for the KAMIR Investigators

Background/Aims: Minimising total ischemic time (TIT) is important for improving clinical outcomes in patients with ST-segment elevation myocardial infarction who have undergone percutaneous coronary intervention (PCI). TIT has not shown...
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Long-Term Outcomes in Patients Undergoing Percutaneous Coronary Intervention with or without Preprocedural Exercise Stress Test

Kim J, Lee JM, Park TK, Yang JH, Song YB, Choi JH, Choi SH, Gwon HC, Lee SH, Hahn JY

BACKGROUND: Although current guidelines recommend noninvasive stress tests prior to elective percutaneous coronary intervention (PCI), it is unknown whether antecedent exercise stress test (EST) affects the outcomes of patients undergoing...
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Intensity of Statin Treatment in Korean Patients with Acute Myocardial Infarction and Very Low LDL Cholesterol

Sim DS, Jeong MH, Kim HS, Gwon HC, Seung KB, Rha SW, Chae SC, Kim CJ, Cha KS, Park JS, Yoon JH, Chae JK, Joo SJ, Choi DJ, Hur SH, Seong IW, Cho MC, Kim DI, Oh SK, Ahn TH, Hwang JY, on behalf of the Korea Acute Myocardial Infarction Registry-National Institutes of Health (KAMIR-NIH) registry investigators

OBJECTIVE: Data on the intensity of statin therapy for patients with acute myocardial infarction (MI) and very low baseline low-density lipoprotein (LDL) cholesterol level are lacking. We sought to assess...
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The Proximal Optimization Technique Improves Clinical Outcomes When Treated without Kissing Ballooning in Patients with a Bifurcation Lesion

Yang JH, Lee JM, Park TK, Song YB, Hahn JY, Choi JH, Choi SH, Yu CW, Chun WJ, Oh JH, Koo BK, Jeong JO, Kim HS, Gwon HC

BACKGROUND AND OBJECTIVES: There are limited data regarding the clinical efficacy of the proximal optimization technique (POT) in the treatment of coronary bifurcation lesions. We investigated the influence of POT...
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Prognostic Value of Admission Blood Glucose Level in Critically Ill Patients Admitted to Cardiac Intensive Care Unit according to the Presence or Absence of Diabetes Mellitus

Kim S, Na SJ, Park TK, Lee JM, Song YB, Choi JO, Hahn JY, Choi JH, Choi SH, Gwon HC, Chung CR, Jeon K, Suh GY, Yang JH

BACKGROUND: Admission blood glucose (BG) level is a predictor of mortality in critically ill patients with various conditions. However, limited data are available regarding this relationship in critically ill patients...
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Safety and Efficacy of Biodegradable Polymer-biolimus-eluting Stents (BP-BES) Compared with Durable Polymer-everolimus-eluting Stents (DP-EES) in Patients Undergoing Complex Percutaneous Coronary Intervention

Song PS, Park KT, Kim MJ, Jeon KH, Park JS, Choi RK, Song YB, Choi SH, Choi JH, Lee SH, Gwon HC, Jeong JO, Im ES, Kim SW, Chun WJ, Oh JH, Hahn JY

BACKGROUND AND OBJECTIVES: There are no data comparing clinical outcomes of complex percutaneous coronary intervention (PCI) between biodegradable polymer-biolimus-eluting stents (BP-BES) and durable polymer-everolimus-eluting stents (DP-EES). We sought to evaluate...
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Impact of Natural Mild Hypothermia in the Early Phase of ST-Elevation Myocardial Infarction: Cardiac Magnetic Resonance Imaging Study

Lim K, Yang JH, Hahn JY, Choi SH, Gwon HC, Park SJ, Song YB

BACKGROUND: Mild hypothermia (32–35°C) during acute myocardial ischemia has been considered cardioprotective in animal studies. We sought to determine the association of between natural mild hypothermia and myocardial salvage as...
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Risk Scoring System to Assess Outcomes in Patients Treated with Contemporary Guideline-Adherent Optimal Therapies after Acute Myocardial Infarction

Song PS, Ryu DR, Kim MJ, Jeon KH, Choi RK, Park JS, Song YB, Hahn JY, Gwon HC, Ahn Y, Jeong MH, Choi SH, Korea Acute Myocardial Infarction Registry Investigators

BACKGROUND AND OBJECTIVES: A risk prediction is needed even in the contemporary era of acute myocardial infarction (AMI). We sought to develop a risk scoring specific for patients with AMI...
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Understanding the Coronary Bifurcation Stenting

Gwon HC

Coronary bifurcation stenting is still complex and associated with a high risk of stent thrombosis and restenosis even with contemporary techniques. Although provisional approach has been proved to be the...
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Long-term Survival Benefit of Statin in Patients with Coronary Chronic Total Occlusion without Revascularization

Kim BS, Yang JH, Jang WJ, Song YB, Hahn JY, Choi JH, Choi KH, Kim SH, Chun WJ, Gwon HC, Choi SH

BACKGROUND: Limited data are available on the efficacy of statin therapy in stable ischemic heart disease with chronic total occlusion (CTO) without revascularization. We investigated whether statin therapy could be...
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Uric Acid Level Has a U-shaped Association with Clinical Outcomes in Patients with Vasospastic Angina

Gwag HB, Yang JH, Park TK, Song YB, Hahn JY, Choi JH, Lee SH, Gwon HC, Choi SH

No data are available on the association of serum uric acid and vasospastic angina (VSA) which has endothelial dysfunction as a possible pathophysiologic mechanism. Low uric acid level might cause...
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Erratum: The Practice Pattern of Percutaneous Coronary Intervention in Korea: Based on Year 2014 Cohort of Korean Percutaneous Coronary Intervention (K-PCI) Registry

Gwon HC, Jeon DW, Kang HJ, Jang JS, Park DW, Shin DH, Moon KW, Kim JS, Kim J, Bae JW, Hur SH, Kim BO, Choi D, Han KR, Kim HS

In the article, “The Practice Pattern of Percutaneous Coronary Intervention in Korea.Based on Year 2014 Cohort of Korean Percutaneous Coronary Intervention (K-PCI) Registry.” in Volume 47(3), page 320-327, indexed color...
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