Publications by authors named "Seung Jin Oh"

Obesity has been shown to be an independent risk factor for the development of heart failure (HF) and atherosclerotic cardiovascular disease. Here, we tried to analyze the distribution of obesity by age and sex in a 10-year sample cohort of newly diagnosed HF patients in Korea. A total of 35,869 patients newly diagnosed with HF between 2006 and 2015 from a nationally representative random sample of 1,000,000 people were included in this study.

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Objective: This study aimed to compare the lipid-lowering effect and safety of low-intensity atorvastatin (5 mg) plus ezetimibe (10 mg) combination therapy (A5E10) with monotherapy regimens-atorvastatin 5 mg [A5], ezetimibe 10 mg [E10], and atorvastatin 10 mg [A10])-in dyslipidemia patients.

Methods: A randomized, double-blind, placebo-controlled trial involving 252 dyslipidemia patients was conducted at 25 centers in South Korea (NCT05970679). Participants aged ≥ 19 years were randomized into four groups: A5E10, A5, E10, and A10.

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Studies comparing efficacy and safety of moderate-intensity statin plus ezetimibe versus high-intensity statin in patients with atherosclerotic cardiovascular disease (ASCVD) and type 2 diabetes (T2DM) are scarce. In this multicenter non-inferiority randomized trial, 223 ASCVD patients with T2DM were randomly assigned to receive either rosuvastatin 20 mg once daily or single-pill combination of rosuvastatin 10 mg plus ezetimibe 10 mg once daily for 24 weeks. Laboratory parameters and clinical events were evaluated at 12 and 24 weeks.

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Stretchable optoelectronic devices are typically realized through a 2D integration of rigid components and elastic interconnectors to maintain device performance under stretching deformation. However, such configurations inevitably sacrifice the area ratio of active components to enhance the maximum interconnector strain. We herein propose a 3D buckled height-alternant architecture for stretchable OLEDs that enables the high active-area ratio and the enhanced maximum strain simultaneously.

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  • The study evaluated the effectiveness and tolerability of combining irbesartan (IRB) and amlodipine (AML) in treating essential hypertension when IRB alone was insufficient.
  • Two phase III clinical trials in Korea involved 428 patients and compared combinations of IRB/AML to placebo over 8 weeks, focusing on changes in mean sitting systolic blood pressure (MSSBP).
  • Results showed significant reductions in MSSBP in the combination groups compared to monotherapy, with adverse events occurring in a small percentage of participants, indicating the combined therapy was both effective and tolerable.
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  • * It involved 159 patients with 339 lesions, all of whom had noninvasive coronary computed tomography angiography (CTA) prior to angiography, where FFR and OCT were used to identify ischemic lesions.
  • * Findings showed that certain plaque characteristics from CTA and OCT, like low attenuation plaque and thrombus, significantly predicted which lesions were likely causing ischemia, suggesting a detailed anatomical evaluation could enhance diagnostic accuracy.
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Importance: Although intravascular ultrasonography (IVUS) guidance promotes favorable outcomes after percutaneous coronary intervention (PCI), many catheterization laboratories worldwide lack access.

Objective: To investigate whether systematic implementation of quantitative coronary angiography (QCA) to assist angiography-guided PCI could be an alternative strategy to IVUS guidance during stent implantation.

Design, Setting, And Participants: This randomized, open-label, noninferiority clinical trial enrolled adults (aged ≥18 years) with chronic or acute coronary syndrome and angiographically confirmed native coronary artery stenosis requiring PCI.

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In this paper, we propose a novel method for monocular depth estimation using the hourglass neck module. The proposed method has the following originality. First, feature maps are extracted from Swin Transformer V2 using a masked image modeling (MIM) pretrained model.

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Fracture toughness, which is the resistance of a material to crack propagation, is a critical material property for ensuring the mechanical reliability of damage-tolerant design. Recently, damage-tolerant design is introduced to flexible electronics by adopting micro-cracked ultra-thin nanocrystalline (NC) gold films as stretchable electrodes in a plane stress state. However, experimental investigation of the plane stress fracture toughness of those films remains challenging due to the intrinsic fragility from their sub-100 nm thicknesses.

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The large carrier lifetime mobility product and strong stopping power for high-energy X-rays make halide perovskites an attractive candidate for next-generation X-ray detectors. In particular, high-energy X-rays in the range of several tens of keV require halide perovskite absorber layers with thicknesses exceeding a few millimeters. To avoid carrier scattering caused by grain boundaries at such thicknesses, the utilization of single crystals is desirable.

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Pediatric palliative care was introduced in South Korea in 2018, with an increased need for care of children with life-limiting conditions, such as leukemia. However, the perspective of parents, who are the primary caregivers, regarding pediatric palliative care has not been explored. This study aimed to describe the pediatric palliative care-related experiences of parents who had lost a child to leukemia to better understand their needs and care outcomes.

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  • ALD AlO films are used in various electronic applications but suffer from degradation in humid conditions, impacting their performance.
  • Research showed that environmental degradation leads to increased water-vapor transmission rate (WVTR) and significantly reduced flexibility in these films, with elongation dropping to just 0.3%.
  • To combat this issue, a hybrid silane-based layer (silamer) was introduced, enhancing AlO's stability and making it suitable for use in wearable organic devices.
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Background: The optimal antiplatelet therapy (APT) for patients undergoing non-cardiac surgery within 1 year after percutaneous coronary intervention (PCI) is not yet established.

Methods: Patients who underwent non-cardiac surgery within 1 year after second-generation drug-eluting stent implantation were included from a multicenter prospective registry in Korea. The primary endpoint was 30-day net adverse clinical event (NACE), including all-cause death, major adverse cardiovascular event (MACE), and major bleeding events.

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  • South Korea is facing an aging society, prompting the need for improved integrated care for the elderly, which has led to the launch of 'Community Integrated Care Initiatives' by the Ministry of Health and Welfare.
  • The National Health Insurance Service introduced the 'Patient-Centered Integrated model of Home Health Care Services in South Korea (PICS-K),' establishing Home Health Care Support Centers (HHSC) in public hospitals to enhance coordination and accessibility of home healthcare services.
  • To effectively integrate healthcare and social services, reforms in information sharing and payment systems are needed, with the ultimate goal of supporting homebound individuals and enabling aging in place.
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Background: Coronary computed tomography angiography (CTA) and optical coherence tomography (OCT) provide additional functional information beyond the anatomy by applying computational fluid dynamics (CFD). This study sought to evaluate a novel approach for estimating computational fractional flow reserve (FFR) from coronary CTA-OCT fusion images.

Methods: Among patients who underwent coronary CTA, 148 patients who underwent both pressure wire-based FFR measurement and OCT during angiography to evaluate intermediate stenosis in the left anterior descending artery were included from the prospective registry.

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Introduction: Despite the emphasis on more systematic and high-quality health care services in the maternal period, a high maternal mortality rate in developing countries is still reported. North Korea, one of the closed countries in the world, is no exception. This study aimed to explore the maternal health experiences in North Korea.

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Introduction: Angiography remains the gold standard for guiding percutaneous coronary intervention (PCI). However, it is prone to suboptimal stent results due to the visual estimation of coronary measurements. Although the benefit of intravascular ultrasound (IVUS)-guided PCI is becoming increasingly recognised, IVUS is not affordable for many catheterisation laboratories.

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  • A new tool was created to help healthcare professionals quickly assess the prognosis of COVID-19 patients using data from a study of 5,596 patients, which was then validated with an additional cohort of 445 patients.
  • The model identifies key predictors such as age, sex, and specific symptoms, with an impressive accuracy rate (AUC values of 0.850 and 0.833) for determining the need for oxygen therapy and critical care.
  • The tool outperformed existing protocols in Korea, and an online application is available for calculating prognostic scores while ongoing validation updates are provided.
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We evaluated the angiographic parameter and clinical outcomes of drug-coated balloon (DCB) to assess the optimal angiographic criteria in de novo small vessel disease (SVD). Patients (n = 424, mean age: 64.4 ± 11.

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Background Although antiplatelet therapy (APT) has been recommended to balance ischemic-bleeding risks, it has been left to an individualized decision-making based on physicians' perspectives before non-cardiac surgery. The study aimed to assess the advantages of a consensus among physicians, surgeons, and anesthesiologists on continuation and regimen of preoperative APT in patients with coronary drug-eluting stents. Methods and Results A total of 3582 adult patients undergoing non-cardiac surgery after percutaneous coronary intervention with second-generation stents was retrospectively included from a multicenter cohort.

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  • The study focuses on understanding the mechanical properties of indium tin oxide (ITO) thin films, which are crucial for developing robust flexible electronics, as they often face issues like cracking and delamination.
  • Key measurements revealed the intrinsic properties of as-deposited ITO films, showing Young's modulus, elongation, and tensile strength, along with significant transparency and sheet resistance values.
  • The research also explores the effects of annealing temperature and time on these properties, indicating that optimal conditions (150°C for 1 hour) can enhance mechanical performance without compromising structural integrity.
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Objectives(s): The purpose of this study was to explore the experiences of women's reproductive health in North Korea through statements from North Korean female refugees.

Design And Sample: A qualitative phenomenological study was conducted using Colaizzi's methods. Through purposive and snowball sampling, a total of eight North Korean women refugees were recruited.

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Background: This study assessed the proportion of risk-stratified Korean patients with dyslipidemia achieving their low-density lipoprotein cholesterol (LDL-C) targets as defined by the European Society of Cardiology/European Atherosclerosis Society (ESC/EAS) (2011) guidelines while receiving lipid-modifying treatments (LMTs).

Methods: In this multicenter, cross-sectional, observational study, we evaluated data from Korean patients aged ≥19 years who were receiving LMTs for ≥3 months and had an LDL-C value within the previous 12 months on the same LMT. Data were collected for demographics, cardiovascular (CV) risk factors, medical history, and healthcare consumption.

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  • * The analysis found that discontinuing APT did not significantly increase the risk of major complications within 30 days post-surgery, although it may reduce bleeding risks in patients having intra-abdominal surgery.
  • * However, stopping APT for 9 days or more raised the chances of experiencing major heart-related events compared to those who continued the therapy.
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