27 results on '"Tae-Soo Kang"'
Search Results
2. Culprit‐Only Versus Immediate Multivessel Percutaneous Coronary Intervention in Patients With Acute Myocardial Infarction Complicating Advanced Cardiogenic Shock Requiring Venoarterial‐Extracorporeal Membrane Oxygenation
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Ki Hong Choi, Jeong Hoon Yang, Taek Kyu Park, Joo Myung Lee, Young Bin Song, Joo‐Yong Hahn, Seung‐Hyuk Choi, Chul‐Min Ahn, Cheol Woong Yu, Ik Hyun Park, Woo Jin Jang, Hyun‐Joong Kim, Jang‐Whan Bae, Sung Uk Kwon, Hyun‐Jong Lee, Wang Soo Lee, Jin‐Ok Jeong, Sang‐Don Park, Tae‐Soo Kang, and Hyeon‐Cheol Gwon
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acute myocardial infarction ,cardiogenic shock ,culprit ,multivessel disease ,percutaneous coronary intervention ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Despite the benefit of culprit‐only percutaneous coronary intervention (PCI) in the CULPRIT‐SHOCK (Culprit Lesion Only PCI Versus Multi‐vessel PCI in Cardiogenic Shock) trial, the optimal revascularization strategy for refractory cardiogenic shock (CS) requiring mechanical circulatory support devices remains controversial. This study aimed to compare clinical outcomes between the culprit‐only and immediate multivessel PCI strategies in patients with acute myocardial infarction complicated by CS who underwent venoarterial‐extracorporeal membrane oxygenation before revascularization. Methods and Results This study included patient‐pooled data from the RESCUE (Retrospective and Prospective Observational Study to Investigate Clinical Outcomes and Efficacy of Left Ventricular Assist Devices for Korean Patients With Cardiogenic Shock) and SMC‐ECMO (Samsung Medical Center–Extracorporeal Membrane Oxygenation) registries. A total of 315 patients with acute myocardial infarction with multivessel disease who underwent venoarterial‐extracorporeal membrane oxygenation before revascularization attributable to refractory CS were included in this analysis. The study population was classified into culprit‐only versus immediate multivessel PCI according to nonculprit lesion treatment strategies. The primary end point was 30‐day mortality or renal‐replacement therapy, and the key secondary end point was 12‐month follow‐up mortality. Among the study population, 175 (55.6%) underwent culprit‐only PCI and 140 (44.4%) underwent immediate multivessel PCI. Compared with culprit‐only PCI, immediate multivessel PCI was associated with significantly lower risks of 30‐day mortality or renal‐replacement therapy (68.0% versus 54.3%; P=0.018) and all‐cause mortality during 12 months of follow‐up (59.5% versus 47.5%; hazard ratio [HR], 0.689 [95% CI, 0.506–0.939]; P=0.018) in patients with acute myocardial infarction and CS who underwent venoarterial‐extracorporeal membrane oxygenation before revascularization. These results were also consistent in the 99 pairs of propensity score–matched population (60.6% versus 43.6%; HR, 0.622 [95% CI, 0.420–0.922]; P=0.018). Conclusions Among patients with acute myocardial infarction with multivessel disease complicated by advanced CS requiring venoarterial‐extracorporeal membrane oxygenation before revascularization, immediate multivessel PCI was associated with lower incidences of 30‐day mortality or renal replacement therapy and 12‐month follow‐up mortality, compared with culprit‐only PCI. Registration Information clinicaltrials.gov. Identifier: NCT02985008.
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- 2023
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3. Associations of combined polygenic risk score and glycemic status with atrial fibrillation, coronary artery disease and ischemic stroke
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Juntae Kim, Dongmin Kim, Han-Joon Bae, Byoung-Eun Park, Tae Soo Kang, Seong-Hoon Lim, Su Yeon Lee, Young Hak Chung, Ji Wung Ryu, Myung-Yong Lee, Pil-Sung Yang, and Boyoung Joung
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Polygenic risk score ,Diabetes Mellitus ,Hemoglobin A1c ,Cardiovascular Disease ,Atrial fibrillation ,Coronary artery Disease ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background It is unknown whether high hemoglobin A1c (HbA1c) is associated with increases in the risk of cardiovascular disease among individuals with elevated genetic susceptibility. We aimed to investigate the association between HbA1c and atrial fibrillation (AF), coronary artery disease (CAD), and ischemic stroke according to the polygenic risk score (PRS). Methods The UK Biobank cohort included 502,442 participants aged 40–70 years who were recruited from 22 assessment centers across the United Kingdom from 2006 to 2010. This study included 305,605 unrelated individuals with available PRS and assessed new-onset AF, CAD, and ischemic stroke. The participants were divided into tertiles based on the validated PRS for each outcome. Within each PRS tertiles, the risks of incident events associated with HbA1c levels were investigated and compared with HbA1c
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- 2024
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4. Influence of early dose reduction of ticagrelor on clinical outcomes following percutaneous coronary intervention for complex lesions
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Yonggu Lee, Jeong-Hun Shin, Suk Min Seo, Ik Jun Choi, Jong-Young Lee, Jun-Won Lee, Mahn-Won Park, Tae Soo Kang, Woong Gil Choi, Ki-Hyun Jeon, Hong-Seok Lim, Hyung Joon Joo, Sang Jae Rhee, Jae-Bin Seo, Myung Soo Park, Sang-Ho Park, and Young-Hyo Lim
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Medicine ,Science - Abstract
Abstract Ticagrelor-based dual antiplatelet therapy (DAPT) provides potent antiplatelet inhibition but may increase the bleeding risk in Asian populations. We investigated the influence of early ticagrelor dose reduction (120 mg) on clinical outcomes in Korean patients undergoing percutaneous coronary intervention (PCI). A multicenter prospective clinical cohort study was conducted with patients who received standard-dose ticagrelor-based DAPT (180 mg) after PCI for complex lesions. Major adverse cardiovascular event (MACE: a composite of cardiovascular death, myocardial infarction, stroke, and repeat revascularization), bleeding, and net adverse clinical events (NACE: a composite of MACE and bleeding) were assessed. Among the 772 patients on standard-dose ticagrelor-based DAPT, 115 (14.8%) switched to low-dose ticagrelor-based DAPT (120 mg) within 6 months. Common reasons for the regimen changes were switching as planned (38.8%), dyspnea (25.5%), and bleeding (23.6%). A multivariable Cox proportional hazard model (CPH) showed that the risks of MACE, bleeding, and NACE were not different between the low-dose and standard-dose groups throughout the entire follow-up period and the period beyond 6 months post-PCI. Time-varying multivariable CPH models of the ticagrelor dose reduction yielded similar results. A reduction of the ticagrelor dose within 6 months after PCI is feasible and safe even in patients with complex lesions harboring a high ischemic event risk.
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- 2023
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5. Comparison of 6-Month and Prolonged Dual Antiplatelet Therapy after Percutaneous Coronary Intervention with Biodegradable Polymer Everolimus-Eluting Stent
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Yong-Hoon Yoon, Gyung-Min Park, Jae-Hyung Roh, Sung-Ho Her, Seong-Hoon Lim, Tae Soo Kang, Seung Jin Lee, Jang-Whan Bae, WoongGil Choi, Yong-Mo Yang, Junghee Kim, Yu Jeong Choi, Si Wan Choi, and Jae-Hwan Lee
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background. The optimal duration of dual antiplatelet therapy (DAPT) after biodegradable-polymer (BP) everolimus-eluting stent (EES) implantation remains uncertain. Methods. This study analyzed 793 patients who underwent percutaneous coronary intervention (PCI) with BP-EES in 10 cardiovascular centers in Korea between July 2016 and January 2018. Using the prescription data at 6 months post-PCI, we divided these patients into two groups, namely, short-DAPT and prolonged-DAPT groups, which underwent DAPT for 6 and > 6 months of PCI, respectively. The primary endpoint, which included mortality, myocardial infarction, or target-vessel revascularization at 2 years, was compared by propensity score (PS) matching between the two groups. Results. Out of the 793 patients, 283 matched pairs were identified by PS matching. Out of this matched population, 405 (71.6%) patients had an acute coronary syndrome. The primary endpoint did not differ in 2 years between the short-DAPT and prolonged-DAPT groups (7.5% vs. 8.3%; hazard ratio, 0.87; 95% confidential interval, 0.47–1.60; P=0.648). Likewise, no difference was found regarding mortality, cardiac mortality, myocardial infarction, target-lesion failure, target-vessel failure, and bleeding events defined by the Bleeding Academic Research Consortium and Thrombolysis In the Myocardial Infarction classification. Meanwhile, one patient in the short-DAPT group had definite stent thrombosis at 364 days post-PCI. Subgroup analysis showed that several anatomical and procedural factors were not significantly related to DAPT duration. Most patients (77.4%) in both groups were prescribed clopidogrel at discharge. Conclusions. In real-world patients undergoing PCI with BP-EES, the ischemic and bleeding endpoints demonstrated no difference between 6-month and prolonged (>6 months) DAPT.
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- 2022
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6. Multi-vessel intractable coronary spasm development in a patient with aborted sudden cardiac death: a case study with intravascular ultrasound findings
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Sungsoo Cho and Tae Soo Kang
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Coronary vasospasm ,Intravascular ultrasound ,Sudden cardiac death ,Medicine (General) ,R5-920 - Abstract
Coronary spasm generally occurs in patients with minimal atherosclerotic plaque lesion, and it has a rather favorable prognosis. However, in some cases, coronary spasm may induce myocardial infarction and even sudden cardiac death (SCD). Here, we report a case in which multi-vessel intractable coronary vasospasm suddenly occurred in a diffuse atherosclerotic lesion after percutaneous coronary intervention (PCI) in a patient with aborted SCD. We identified the characteristics of the spasm portion in intravascular ultrasound (IVUS) images and conducted percutaneous cardiopulmonary bypass support-PCI with stenting as treatment. Intima and media thickening and a large attenuated plaque burden with rupture were identified in IVUS images at the obstructive spasm portion.
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- 2018
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7. Importance of indoor dust biological ultrafine particles in the pathogenesis of chronic inflammatory lung diseases
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Jinho Yang, Yoon-Keun Kim, Tae Soo Kang, Young-Koo Jee, and You-Young Kim
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Ultrafine particle ,Particulate matter ,Extracellular vesicle ,Indoor dust ,Inflammatory pulmonary disease ,Environmental sciences ,GE1-350 - Abstract
The role of infectious agents in the etiology of inflammatory diseases once believed to be non-infectious is increasingly being recognized. Many bacterial components in the indoor dust can evoke inflammatory lung diseases. Bacteria secrete nanometer-sized vesicles into the extracellular milieu, so-called extracellular vesicles (EV). which are pathophysiologically related to inflammatory diseases. Microbiota compositions in the indoor dust revealed the presence of both Gram-negative and Gram-positive bacteria. Escherichia coli is a model organism of Gram-negative Enterobacteriaceae. The repeated inhalation of E. coli-derived EVs caused neutrophilic inflammation and emphysema in a dose-dependent manner. The emphysema induced by E. coli-derived EVs was partially eliminated by the absence of Interferon-gamma or interleukin-17, suggesting that Th1 and/or Th17 cell responses are important in the emphysema development. Meanwhile, the repeated inhalation of Staphylococcus aureus-derived EVs did not induce emphysema, although they induced neutrophilic inflammation in the lung. In terms of microbial EV compositions in the indoor dust, genera Pseudomonas, Acinetobacter, Enterobacter, and Staphylococcus were dominant. As for the clinical significance of sensitization to EVs in the indoor dust, EV sensitization was closely associated with asthma, chronic obstructive pulmonary disorder (COPD), and lung cancer. These data indicate that biological ultrafine particles in the indoor dust, which are mainly composed of microbial EVs, are important in the pathogenesis of chronic lung diseases associated with neutrophilic inflammation. Taken together, microbial EVs in the indoor dust are an important diagnostic and therapeutic target for the control of chronic lung diseases, such as asthma, COPD, and lung cancer.
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- 2017
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8. Determinants and Clinical Outcomes of Extended Dual Antiplatelet Therapy over 3 Years after Drug-Eluting Stent Implantation: A Retrospective Analysis.
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Oh-Hyun Lee, Byeong-Keuk Kim, Sung-Jin Hong, Seunghwan Kim, Chul-Min Ahn, Dong-Ho Shin, Jung-Sun Kim, Tae Soo Kang, Young-Guk Ko, Donghoon Choi, Myeong-Ki Hong, and Yangsoo Jang
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Purpose: Although current guidelines recommend the administration of dual antiplatelet therapy (DAPT) for up to 12 months after the implantation of a drug-eluting stent (DES), extended DAPT is frequently used in real-world practice. Materials and Methods: From the Korean Multicenter Angioplasty Team registry, we identified a total of 1414 patients who used DAPT for >3 years after DES implantation (extended-DAPT group) and conducted a landmark analysis at 36 months after the index procedure. We evaluated the determinants for and long-term outcomes of extended DAPT and compared the occurrence of major adverse cardiovascular and cerebrovascular events (MACCE), defined as the composite of all-cause death, myocardial infarction, stent thrombosis, and stroke, between the extended-DAPT group and the guideline-DAPT group [DAPT <1 year after DES implantation (n=1273)]. Results: Multivariate analysis indicated the occurrence of acute coronary syndrome as the most significant clinical determinant of the use of extended DAPT. Bifurcation, stent diameter ≤3.0 mm, total stented length =28 mm, and use of first-generation DESs were also significant angiographic and procedural determinants. MACCE rates were similar between the extended-DAPT group and the guideline-DAPT group in crude analysis [hazard ratio (HR), 1.08; 95% confidence interval (CI), 0.69-1.68; p=0.739] and after propensity matching (HR, 1.22; 95% CI, 0.72-2.07; p=0.453). Major bleeding rates were comparable between the two groups. Conclusion: In patients undergoing percutaneous coronary intervention, indefinite use of DAPT does not show superior outcomes to those of guideline-DAPT. Major bleeding rates are also similar. [ABSTRACT FROM AUTHOR]
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- 2020
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9. Five-year clinical outcomes of first-generation versus second-generation drug-eluting stents following coronary chronic total occlusion intervention.
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Yong Hoon Kim, Ae-Young Her, Seung-Woon Rha, Byoung Geol Choi, Se Yeon Choi, Jae Kyeong Byun, Yoonjee Park, Dong Oh Kang, Won Young Jang, Woohyeun Kim, Ju Yeol Baek, Woong Gil Choi, Tae Soo Kang, Jihun Ahn, Sang-Ho Park, Ji Young Park, Min-Ho Lee, Cheol Ung Choi, Chang Gyu Park, and Hong Seog Seo
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PERCUTANEOUS coronary intervention ,DRUG-eluting stents ,ARTERIAL occlusions ,REVASCULARIZATION (Surgery) ,PROPENSITY score matching - Abstract
Background There are limited data comparing long-term clinical outcomes between first-generation (1G) and second-generation (2G) drug-eluting stents (DESs) in patients who underwent successful percutaneous coronary intervention (PCI) for coronary chronic total occlusion (CTO) lesion. Methods A total of 840 consecutive patients who underwent PCI with DESs for CTO lesion from January 2004 to November 2015 were enrolled. Finally, a total of 324 eligible CTO patients received 1G-DES (Paclitaxel-eluting stent or Sirolimus-eluting stent, n = 157) or 2G-DES (Zotarolimus-eluting stent or Everolimus-eluting stent, n = 167) were enrolled. The clinical endpoint was the occurrence of major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), total repeat revascularization [target lesion revascularization (TLR), target vessel revascularization (TVR), and non-TVR]. We investigated the 5-year major clinical outcomes between 1G-DES and 2G-DES in patient who underwent successful CTO PCI. Results After propensity score matched (PSM) analysis, two well-balanced groups (111 pairs, n = 222, C-statistic = 0.718) were generated. Up to the 5-year follow-up period, the cumulative incidence of all-cause death, re-MI, TLR, TVR and non-TVR were not significantly different between the two groups. Finally, MACE was also similar between the two groups (HR = 1.557, 95% CI: 0.820-2.959, P = 0.176) after PSM. Conclusions In this study, 2G-DES was not associated with reduced long-term MACE compared with 1G-DES following successful CTO revascularization up to five years. [ABSTRACT FROM AUTHOR]
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- 2019
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10. Calcium channel blocker monotherapy versus combination with reninangiotensin system inhibitors on the development of new-onset diabetes mellitus in hypertensive Korean patients.
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Yong Hoon Kim, Ae-Young Her, Seung-Woon Rha, Byoung Geol Choi, Se Yeon Choi, Jae Kyeong Byun, Yoonjee Park, Dong Oh Kang, Won Young Jang, Woohyeun Kim, Woong Gil Choi, Tae Soo Kang, Jihun Ahn, Sang-Ho Park, Ji Young Park, Min-Ho Lee, Cheol Ung Choi, Chang Gyu Park, and Hong Seog Seo
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CALCIUM antagonists ,DIABETES ,BLOOD sugar ,MYOCARDIAL infarction ,PERCUTANEOUS coronary intervention - Abstract
Background In real practice, two or more antihypertensive drugs are needed to achieve target blood pressure. We investigated the comparative beneficial actions of combination therapy of renin-angiotensin system inhibitors (RASI), with calcium channel blockers (CCB) over CCB monotherapy on the development of new-onset diabetes mellitus (NODM) in Korean patients during four-year follow-up periods. Methods A total of 3208 consecutive hypertensive patients without a history of diabetes mellitus who had been prescribed CCB were retrospectively enrolled from January 2004 to December 2012. These patients were divided into the two groups according to the additional use of RASI (the RASI group, n = 1221 and the no RASI group, n = 1987). Primary endpoint was NODM, defined as a fasting blood glucose ≥ 126 mg/dL or hemoglobin A1c ≥ 6.5%. Secondary endpoint was major adverse cardiac events (MACE) defined as total death, myocardial infarction (MI) and percutaneous coronary intervention (PCI). Results After propensity score-matched (PSM) analysis, two propensity-matched groups (939 pairs, n = 1878, C-statistic = 0.743) were generated. The incidences of NODM (HR = 1.009, 95% CI: 0.700-1.452, P = 0.962), MACE (HR = 0.877, 95% CI: 0.544-1.413, P = 0.589), total death, MI, PCI were similar between the two groups after PSM during four years. Conclusions The use of RASI in addition to CCB showed comparable incidences of NODM and MACE compared to CCB monotherapy in non-diabetic hypertensive Korean patients during four-year follow-up period. However, large-scaled randomized controlled clinical trials will be required for a more definitive conclusion. [ABSTRACT FROM AUTHOR]
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- 2019
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11. Structural evolution of epitaxial SrRuO3 thin films grown on SrTiO3(001)
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Sang Sub Kim, Tae Soo Kang, and Jung Ho He
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Dielectric films -- Spectra ,Dielectric films -- Research ,Thin films -- Spectra ,Thin films -- Research ,Strontium -- Spectra ,Ablation (Vaporization technology) -- Observations ,Physics - Abstract
Synchroton x-ray scattering is used to study microstructural changes in epitaxial SrRuO3 thin films grown on SrTiO3(001) during the early stages of growth by pulsed laser deposition. At a very early stage of growth (less than or equal to 110 Angstrom), the film is composed of a single (110) domain only.
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- 2001
12. The multi-vessel and diffuse coronary spasm is a risk factor for persistent angina in patients received anti-angina medication.
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Sang-Ho Park, Byoung Geol Choi, Seung-Woon Rha, Tae Soo Kang, Park, Sang-Ho, Choi, Byoung Geol, Rha, Seung-Woon, and Kang, Tae Soo
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- 2018
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13. Effect of successful revascularization on left ventricular diastolic dysfunction in patients with aortoiliac occlusive disease.
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Wonho Kim, Tae Soo Kang, Kim, Wonho, and Kang, Tae Soo
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- 2018
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14. Chronic total occlusion intervention of the non-infarct-related artery in acute myocardial infarction patients: the Korean multicenter chronic total occlusion registry.
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Ji Young Park, Byoung Geol Choi, Seung-Woon Rha, Tae Soo Kang, Cheol Ung Choi, Cheol Woong Yu, Hyeon-Cheol Gwon, In-Ho Chae, Hyo-Soo Kim, Hun Sik Park, Seung-Hwan Lee, Moo-Hyun Kim, Seung-Ho Hur, Yangsoo Jang, Park, Ji Young, Choi, Byoung Geol, Rha, Seung-Woon, Kang, Tae Soo, Choi, Cheol Ung, and Yu, Cheol Woong
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- 2018
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15. Loan-to-Deposit Ratio vs. Basel III Net Stable Funding Ratio: Case in Korean Banks.
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Tae Soo Kang and Hyun Yeol Shin
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- 2017
16. Asset-based Reserve Requirements in a Dynamic StochasticGeneral Equilibrium Model.
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Tae Soo Kang and Hyunduk Suh
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RESERVE requirements ,BANK assets ,BANK compliance ,FINANCIAL institutions ,BANK capital ,BASEL III (2010) - Abstract
We discuss the macroeconomic effects of asset-based reserve requirements (ABRR) in a dynamic stochastic general equilibrium model. In contrast to the conventional reserve requirement system, ABRR impose reserve requirements on financial institutions' asset holdings. The policy can be used for macro prudential purposes to reduce pro-cyclicality of financial institutions. Using a financial friction New Keynesian model based on Meh and Moran (2010), we show that ABRR can be a more effective instrument in the presence of sector-specific shocks than the Basel-III type countercyclical capital buffer. The reason is that the former policy can adjust the asset return of the specific sector hit by the shock, whereas the latter does not have such sector-specific treatment. [ABSTRACT FROM AUTHOR]
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- 2017
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17. Global Market Volatility and Portfolio Fund Flows in Emerging Market.
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Tae Soo Kang and Tae-Hoon Lim
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- 2017
18. The efficacy and safety of co-administration of fimasartan and rosuvastatin to patients with hypertension and dyslipidemia.
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Moo-Yong Rhee, Taehoon Ahn, Kiyuk Chang, Shung Chull Chae, Tae-Hyun Yang, Wan Joo Shim, Tae Soo Kang, Jae-Kean Ryu, Deuk-Young Nah, Tae-Ho Park, In-Ho Chae, Seung Woo Park, Hae-Young Lee, Seung-Jea Tahk, Young Won Yoon, Chi Young Shim, Dong-Gu Shin, Hong Seog Seo, Sung Yun Lee, and Doo Il Kim
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DYSLIPIDEMIA ,LIPID metabolism disorders ,BLOOD pressure ,HYPERTENSION ,ROSUVASTATIN ,PATIENTS - Abstract
Background: Hypertension and dyslipidemia are major risk factors of cardiovascular disease (CVD) events. The objective of this study was to evaluate the efficacy and safety of the co-administration of fimasartan and rosuvastatin in patients with hypertension and hypercholesterolemia. Methods: We conducted a randomized double-blind and parallel-group trial. Patients who met eligible criteria after 4 weeks of therapeutic life change were randomly assigned to the following groups. 1) co-administration of fimasartan 120 mg/rosuvastatin 20 mg (FMS/RSV), 2) fimasartan 120 mg (FMS) alone 3) rosuvastatin 20 mg (RSV) alone. Drugs were administered once daily for 8 weeks. Results: Of 140 randomized patients, 135 for whom efficacy data were available were analyzed. After 8 weeks of treatment, the FMS/RSV treatment group showed greater reductions in sitting systolic (siSBP) and diastolic (siDBP) blood pressures than those in the group receiving RSV alone (both p < 0.001). Reductions in siSBP and siDBP were not significantly different between the FMS/RSV and FMS alone groups (p = 0.500 and p = 0.734, respectively). After 8 weeks of treatment, FMS/RSV treatment showed greater efficacy in percentage reduction of low-density lipoprotein cholesterol (LDL-C) level from baseline than that shown by FMS alone treatment (p < 0.001). The response rates of siSBP with FMS/RSV, FMS alone, and RSV alone treatments were 65.22, 55.56, and 34.09%, respectively (FMS/RSV vs. RSV, p = 0.006). The LDL-C goal attainment rates with FMS/RSV, RSV alone, and FMS alone treatments were 80.43%, 81.82%, and 15.56%, respectively (FMS/RSV vs. FMS, p < 0.001). Incidence of adverse drug reactions with FMS/RSV treatment was 8.33%, which was similar to those associated with FMS and RSV alone treatments. Conclusion: This study demonstrated that the co-administration of fimasartan and rosuvastatin to patients with both hypertension and hypercholesterolemia was efficacious and safe. [ABSTRACT FROM AUTHOR]
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- 2017
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19. RECURRENT ACUTE MYOCARDIAL INFARCTION CAUSED BY INTRA-CARDIAC METASTATIC UNDIFFERENTIATED PLEOMORPHIC SARCOMA DURING CANCER TREATMENT.
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SUNGSOO CHO, NA-HYE MYONG, and TAE SOO KANG
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MYOCARDIAL infarction ,CANCER treatment ,SARCOMA - Published
- 2018
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20. Effect of Intravascular Ultrasound-Guided vs Angiography-Guided Everolimus-Eluting Stent Implantation: The IVUS-XPL Randomized Clinical Trial.
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Sung-Jin Hong, Byeong-Keuk Kim, Dong-Ho Shin, Chung-Mo Nam, Jung-Sun Kim, Young-Guk Ko, Donghoon Choi, Tae-Soo Kang, Woong-Chol Kang, Ae-Young Her, Yonghoon Kim, Seung-Ho Hur, Bum-Kee Hong, Hyuckmoon Kwon, Yangsoo Jang, Myeong-Ki Hong, Hong, Sung-Jin, Kim, Byeong-Keuk, Shin, Dong-Ho, and Nam, Chung-Mo
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ANGIOGRAPHY ,INTRAVASCULAR ultrasonography ,EVEROLIMUS ,SURGICAL stents ,TISSUE wounds ,COMPARATIVE studies ,IMMUNOSUPPRESSIVE agents ,LONGITUDINAL method ,RESEARCH methodology ,MEDICAL cooperation ,HEALTH outcome assessment ,INTERVENTIONAL radiology ,RESEARCH ,ULTRASONIC imaging ,EVALUATION research ,RANDOMIZED controlled trials ,DRUG-eluting stents ,CORONARY angiography - Abstract
Importance: Use of intravascular ultrasound (IVUS) promotes better clinical outcomes for coronary intervention in complex coronary lesions. However, randomized data demonstrating the clinical usefulness of IVUS are limited for lesions treated with drug-eluting stents.Objective: To determine whether the long-term clinical outcomes with IVUS-guided drug-eluting stent implantation are superior to those with angiography-guided implantation in patients with long coronary lesions.Design, Setting, and Participants: The Impact of Intravascular Ultrasound Guidance on Outcomes of Xience Prime Stents in Long Lesions (IVUS-XPL) randomized, multicenter trial was conducted in 1400 patients with long coronary lesions (implanted stent ≥28 mm in length) between October 2010 and July 2014 at 20 centers in Korea.Interventions: Patients were randomly assigned to receive IVUS-guided (n = 700) or angiography-guided (n = 700) everolimus-eluting stent implantation.Main Outcomes and Measures: Primary outcome measure was the composite of major adverse cardiac events, including cardiac death, target lesion-related myocardial infarction, or ischemia-driven target lesion revascularization at 1 year, analyzed by intention-to-treat.Results: One-year follow-up was complete in 1323 patients (94.5%). Major adverse cardiac events at 1 year occurred in 19 patients (2.9%) undergoing IVUS-guided and in 39 patients (5.8%) undergoing angiography-guided stent implantation (absolute difference, -2.97% [95% CI, -5.14% to -0.79%]) (hazard ratio [HR], 0.48 [95% CI, 0.28 to 0.83], P = .007). The difference was driven by a lower risk of ischemia-driven target lesion revascularization in patients undergoing IVUS-guided (17 [2.5%]) compared with angiography-guided (33 [5.0%]) stent implantation (HR, 0.51 [95% CI, 0.28 to 0.91], P = .02). Cardiac death and target lesion-related myocardial infarction were not significantly different between the 2 groups. For cardiac death, there were 3 patients (0.4%) in the IVUS-guided group and 5 patients (0.7%) in the angiography-guided group (HR, 0.60 [95% CI, 0.14 to 2.52], P = .48). Target lesion-related myocardial infarction occurred in 1 patient (0.1%) in the angiography-guided stent implantation group (P = .32).Conclusions and Relevance: Among patients requiring long coronary stent implantation, the use of IVUS-guided everolimus-eluting stent implantation, compared with angiography-guided stent implantation, resulted in a significantly lower rate of the composite of major adverse cardiac events at 1 year. These differences were primarily due to lower risk of target lesion revascularization.Trial Registration: clinicaltrials.gov Identifier: NCT01308281. [ABSTRACT FROM AUTHOR]- Published
- 2015
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21. Neointimal response to second-generation drug-eluting stents in diabetic patients with de-novo coronary lesions: intravascular ultrasound study.
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Hoyoun Won, Tae Soo Kang, Bum-Kee Hong, Seunghwan Lee, Dong Woon Jeon, Sung Kee Ryu, Pil-Ki Min, Young Won Yoon, Byoung Kwon Lee, Hyuck Moon Kwon, Young-Guk Ko, and Yangsoo Jang
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- 2015
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22. Efficacy of Subintimal Angioplasty/Stent Implantation for Long, Multisegmental Lower Limb Occlusive Lesions in Patients Unsuitable for Surgery.
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Jung-Sun Kim, Tae Soo Kang, Chul Min Ahn, Young-Guk Ko, Donghoon Choi, Yangsoo Jang, Namsik Chung, Won-Heum Shim, and Seung-Yun Cho
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ANGIOPLASTY ,ARTERIAL occlusions ,FEMORAL artery ,ARTIFICIAL implants ,SURGERY - Abstract
Purpose: To investigate the feasibility and clinical outcomes of subintimal angioplasty combined with stent implantation in patients with long, multisegmental occlusive lesions unsuitable for surgical treatment. Methods: Between 2003 and 2005, 30 patients (23 men; mean age 68 years, range 49-82) with severe claudication (Rutherford category 3, n=12) or critical limb ischemia (CLI; Rutherford category 4 or 5, n=18) underwent subintimal angioplasty with primary stenting for long (mean 28±11 cm) total occlusion in the lower limb arteries. Bypass surgery was considered unsuitable owing to inappropriate anatomy or poor distal runoff in 14 (47%) patients, severe coronary artery disease 14 (47%), or poor general condition in 2 (6%). Results: Technical success was achieved in 27 (90%) of 30 cases. The 3 technical failures were due to inability to advance the wire, to re-enter the distal lumen, and vessel rupture, respectively. Three (10%) complications occurred (1 perforation, 2 hematomas) but did not require surgery. After a mean follow-up of 13±7 months (range 3-28), 10 (37%) cases of restenosis were found in 27 patients. At 12 months, the primary patency rate was 52%, and the limb salvage rate was 83%. Conclusion: Combined use of subintimal angioplasty and stent implantation was performed safely, with a relatively high success rate and acceptable intermediate-term clinical outcomes in patients with multisegmental, long occlusions of the lower limb arteries. Therefore, this strategy can be considered an option for symptomatic relief and limb salvage in patients unsuitable for bypass surgery due to various reasons. [ABSTRACT FROM AUTHOR]
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- 2006
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23. Real-time x-ray scattering study on the thermal evolution of interface roughness in CoSi[sub2] formation.
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Tae Soo Kang and Jung Ho Le
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SURFACE roughness , *COBALT , *SILICON - Abstract
Examines the thermal evolution of interface roughness during cobalt silicide formation in the Co/Ti/Si(001) and Co/Si(001) systems. Use of real-time synchroton x-ray scattering measurement; Enhancement of the CoSi[sub 2]/Si(001) interface roughness; Suppression of the reaction between the cobalt overlayer and silicon substrate.
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- 2002
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24. Association of proteinuria and incident atrial fibrillation in patients with diabetes mellitus: a population-based senior cohort study
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Juntae Kim, Pil-Sung Yang, Byoung-Eun Park, Tae Soo Kang, Seong-Hoon Lim, Sungsoo Cho, Su-Yeon Lee, Myung-Yong Lee, Gregory Y. H. Lip, Dongmin Kim, and Boyoung Joung
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Medicine ,Science - Abstract
Abstract Diabetes mellitus (DM) is considered an independent risk factor for atrial fibrillation (AF). The excess risk in relation to the presence of proteinuria has not been well elucidated. Our aim was to determine the association between the incidence of AF and proteinuria in diabetic population. A total of 240,499 individuals aged ≥ 60 years from the Korea National Health Insurance Service-Senior cohort from 2004 to 2014 were included. 4.2% of individuals with DM and 3.7% of controls were diagnosed with AF during a median follow-up period of 7.2 years. Amongst controls (participants without proteinuria and DM), DM only, proteinuria only, and DM with proteinuria groups, the crude incidences of AF were 0.58, 0.70, 0.96, 1.24 per 100 person-years respectively. Compared with controls, the weighted risk of AF was increased by 11% (hazard ratio = 1.11, 95% confidence interval = 1.02–1.20, P = .001), 48% (hazard ratio = 1.48, 95% confidence interval = 1.30–1.69, P
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- 2021
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25. Machine learning models of clinically relevant biomarkers for the prediction of stable obstructive coronary artery disease
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Juntae Kim, Su Yeon Lee, Byung Hee Cha, Wonseop Lee, JiWung Ryu, Young Hak Chung, Dongmin Kim, Seong-Hoon Lim, Tae Soo Kang, Byoung-Eun Park, Myung-Yong Lee, and Sungsoo Cho
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machine learning ,artificial intelligence ,coronary artery disease ,stable angina pectoris ,personalized medicine ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundIn patients with suspected obstructive coronary artery disease (CAD), evaluation using a pre-test probability model is the key element for diagnosis; however, its accuracy is controversial. This study aimed to develop machine learning (ML) models using clinically relevant biomarkers to predict the presence of stable obstructive CAD and to compare ML models with an established pre-test probability of CAD models.MethodsEight machine learning models for prediction of obstructive CAD were trained on a cohort of 1,312 patients [randomly split into the training (80%) and internal validation sets (20%)]. Twelve clinical and blood biomarker features assessed on admission were used to inform the models. We compared the best-performing ML model and established the pre-test probability of CAD (updated Diamond-Forrester and CAD consortium) models.ResultsThe CatBoost algorithm model showed the best performance (area under the receiver operating characteristics, AUROC, 0.796, and 95% confidence interval, CI, 0.740–0.853; Matthews correlation coefficient, MCC, 0.448) compared to the seven other algorithms. The CatBoost algorithm model improved risk prediction compared with the CAD consortium clinical model (AUROC 0.727; 95% CI 0.664–0.789; MCC 0.313). The accuracy of the ML model was 74.6%. Age, sex, hypertension, high-sensitivity cardiac troponin T, hemoglobin A1c, triglyceride, and high-density lipoprotein cholesterol levels contributed most to obstructive CAD prediction.ConclusionThe ML models using clinically relevant biomarkers provided high accuracy for stable obstructive CAD prediction. In real-world practice, employing such an approach could improve discrimination of patients with suspected obstructive CAD and help select appropriate non-invasive testing for ischemia.
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- 2022
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26. Association of Light-Intensity Physical Activity With Mortality in the Older Population: A Nationwide Cohort Study
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Juntae Kim, Pil-Sung Yang, Byoung-Eun Park, Tae Soo Kang, Seong-Hoon Lim, Sungsoo Cho, Su-Yeon Lee, Young Hak Chung, Myung-Yong Lee, Dongmin Kim, and Boyoung Joung
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sport cardiology ,exercise ,light-intensity physical activity ,elderly ,all-cause mortality ,cardiovascular mortality ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundThere is a paucity of information about mortality related to light-intensity physical activity (LPA) in the older population. We examine the associations between physical activity and mortality, focusing on the effect of light-intensity physical activity and the dose-response relationship between physical activity and mortality.MethodsWe analyzed a total of 58,537 participants aged ≥ 65 years (mean age, 73.9 ± 5.8 years; male, 36.0%) in the Korean National Health Insurance Service database between 2009 and 2012. The Date of the end of follow-up was December 31, 2013. Individuals were divided into four categories according to physical activity intensity: totally sedentary (43.3%), LPA only (35.8%), LPA and moderate- to vigorous-intensity physical activity (MVPA) (16.3%), MVPA only (4.5%). Physical activity was quantified using standardized self-reported questionnaires which composed of the duration and frequency of physical activity.ResultsDuring a mean follow-up of 39.6 ± 14.0 months, 5,651 (9.7%) deaths occurred. Compared with totally sedentary individuals, those in the LPA only, LPA and MVPA, and MVPA only groups showed 26% [hazard ratio (HR) 0.74, 95% confidence interval (CI) 0.68–0.82], 27% (HR 0.73, 95% CI 0.63–0.84), and 34% (HR 0.66, 95% CI 0.54–0.79) lower all-cause mortality risk, showing an inverse relationship between physical activity intensity and mortality risk. In contrast, the LPA only, LPA and MVPA, and MVPA only groups represented a stronger inverse association with CV mortality (LPA: HR 0.76, 95% CI 0.62–0.92; LPA with MVPA: HR 0.74, 95% CI 0.55–0.999; MVPA, HR 0.57, 95% CI 0.37–0.87). Among participants performing LPA alone, participants performing less than the recommended dose of physical activity had lower all-cause mortality than those with sedentary activity (1–249 MET-min/week: HR 0.74, 95% CI 0.67–0.82, 250–499 MET-min/week: HR 0.65, 95% CI 0.59–0.72).ConclusionPhysical activity, even low doses of LPA, was associated with reduced mortality risk in the elderly population. This study may motivate sedentary individuals to engage in any physical activity for mortality benefits.
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- 2022
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27. Author Correction: Association of proteinuria and incident atrial fibrillation in patients with diabetes mellitus: a population-based senior cohort study
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Juntae Kim, Pil-Sung Yang, Byoung-Eun Park, Tae Soo Kang, Seong-Hoon Lim, Sungsoo Cho, Su-Yeon Lee, Myung-Yong Lee, Gregory Y. H. Lip, Dongmin Kim, and Boyoung Joung
- Subjects
Medicine ,Science - Published
- 2021
- Full Text
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