Young-Wan Cho

Inje University Paik Hospital, Goyang, Gyeonggi, South Korea

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Publications (3)8.47 Total impact

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    ABSTRACT: Although several randomized trials have shown that sirolimus-eluting stent (SES) substantially reduces in-stent restenosis, recent studies have suggested the possibility of late catch-up after SES implantation. We investigated long-term angiographic outcomes after SES implantation in real-world practice. This study was conducted on 195 patients with 253 lesions who underwent the first and long-term angiographic follow-up after SES implantation. First follow-up was done at near 6 months after SES implantation. Long-term angiographic follow-up was defined as that performed at least 36 months after index procedure. Angiographies in patients who experienced target lesion revascularization at the time of the first angiographic follow-up were excluded from the current analysis. Minimal luminal diameter at long-term angiographic follow-up was significantly smaller compared with that at the first follow-up (2.21 ± 0.65 vs. 2.40 ± 0.55, p<0.001). In-stent late lumen loss between the first and long-term follow-up tended to be larger compared with that between SES implantation and the first follow-up (0.19 ± 0.47 vs. 0.15 ± 0.39, p=0.298). There was a trend for increased incidence of coronary artery aneurysm (1.6% and 7.5% at the first and long-term follow-up) and stent fracture (4.3% and 10.3%). Two stent aneurysms and one stent fracture were related with definite very late stent thrombosis. An "angiographic late catch-up" phenomenon and a trend toward increased incidence of coronary artery aneurysm and stent fracture were found at a median 46.5-month angiographic follow-up compared with a median 6-month follow-up.
    International journal of cardiology 08/2011; 160(1):48-52. · 6.18 Impact Factor
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    ABSTRACT: Time from hospital arrival to reperfusion in ST-segment elevation myocardial infarction (STEMI) has been predictive of in-hospital mortality. The purpose of this study was to evaluate the relationship between symptom-onset-to-balloon time and long-term mortality in patients with STEMI in the drug-eluting stent (DES) era. A series of 393 patients with STEMI treated with DES from 2005 to 2007 was stratified according to risk profile and preprocedural Thrombolysis In Myocardial Infarction (TIMI) flow grade, and clinical, angiographic, and follow-up data were collected. A total of 98 (24.9%) low-risk patients and 295 (75.1%) non-low-risk patients were identified. Three-year mortality rate was 3.1% for low-risk patients and 10.2% for non-low-risk patients (p=0.034), respectively; however it did not differ according to symptom-onset-to-balloon time in either low-risk (p=0.333) or non-low-risk patients (p=0.881). Similarly, symptom-onset-to-balloon time and mortality were not related to preprocedural TIMI flow (p=0.474 for TIMI 0-1; p=0.428 for TIMI 2-3). In multivariate analysis, final TIMI flow 0-2, systolic blood pressure <100 mmHg at admission, age ≥70 years, anterior infarction, C-reactive protein level, and peak creatine kinase myocardial band isoenzyme level were identified as independent predictors of 3-year mortality while symptom-onset-to-balloon time and preprocedural TIMI flow were not. In STEMI patients treated with DES, symptom-onset-to-balloon time does not affect long-term outcomes even in individuals at non-low risk and with poor preprocedural TIMI flow grade.
    Journal of Cardiology 07/2011; 58(2):143-50. · 2.30 Impact Factor
  • Journal of The American College of Cardiology - J AMER COLL CARDIOL. 01/2011; 57(14).