1,553 results match your criteria: "Severance Cardiovascular Hospital.[Affiliation]"

Chip collection of hepatocellular carcinoma based on O heterogeneity from patient tissue.

Nat Commun

June 2024

Department of Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.

Hepatocellular carcinoma frequently recurs after surgery, necessitating personalized clinical approaches based on tumor avatar models. However, location-dependent oxygen concentrations resulting from the dual hepatic vascular supply drive the inherent heterogeneity of the tumor microenvironment, which presents challenges in developing an avatar model. In this study, tissue samples from 12 patients with hepatocellular carcinoma are cultured directly on a chip and separated based on preference of oxygen concentration.

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Background And Objectives: The K-ELUVIA study aimed to investigate the clinical effectiveness and safety of Eluvia™, a polymer-coated, paclitaxel-eluting stent, for femoropopliteal artery disease using data from a prospective Korean multicenter registry.

Methods: A total of 105 patients with femoropopliteal artery disease who received endovascular treatment (EVT) with Eluvia™ stents at 7 Korean sites were enrolled in a prospective cohort and followed for 2 years. The primary endpoint was the 2-year clinical patency.

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Commentary: Is Arterial Cannulation Inevitable for Acute Type A Aortic Dissection Repair?

J Chest Surg

July 2024

Department of Thoracic and Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea.

See Article page 380.

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Generation of an induced pluripotent stem cell line from a patient with arrhythmogenic right ventricular cardiomyopathy harboring a TMEM43 splice-site variant.

Stem Cell Res

August 2024

Department of Biochemistry and Molecular Biology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Institute of Genetic Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea. Electronic address:

Arrhythmogenic cardiomyopathy (ACM) is a cardiomyopathy that is predominantly inherited and characterized by cardiac arrhythmias and structural abnormalities. TMEM43 (transmembrane protein 43) is one of the well-known genetic culprits behind ACM. In this study, we successfully generated an induced pluripotent stem cell (iPSC) line, YCMi010-A, derived from a male patient diagnosed with ACM.

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Cardiogenic shock complicating acute myocardial infarction and multivessel disease: revascularization strategy according to ischemic territory.

Rev Esp Cardiol (Engl Ed)

May 2024

Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. Electronic address:

Article Synopsis
  • The study looked at patients with heart attacks and severe complications to see how different treatments affected their recovery.
  • Researchers compared two methods of treating blocked heart arteries: fixing just the main problem (culprit) versus fixing multiple issues at once.
  • They found that patients with more serious artery blockages did worse overall, but those with certain types of blockages had better outcomes when treated with multiple artery repair right away.
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Objective: This study investigated the feasibility and prognostic relevance of threshold-based quantification of myocardial delayed enhancement (MDE) on CT in patients with nonischemic dilated cardiomyopathy (NIDCM).

Materials And Methods: Forty-three patients with NIDCM (59.3 ± 17.

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Introduction: The long-term effects of fenestration in patients with Fontan circulation remain unclear. We aim to evaluate the fenestration impact on early and late outcomes in patients with extracardiac Fontan (ECF) using a propensity score matching analysis.

Methods: We performed an extensive retrospective multicenter clinical data review of the Korean Fontan registry and included 1,233 patients with surgical ECF (779 fenestrated, 454 non-fenestrated).

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Background And Objectives: The popliteal artery is generally regarded as a "no-stent zone." Limited data are available on the outcomes of drug-coated balloons (DCBs) for popliteal artery disease. This study aimed to evaluate the 12-month clinical outcomes among patients who received DCB treatment for atherosclerotic popliteal artery disease.

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Background And Objectives: Kawasaki disease (KD) is an acute vasculitis that primarily affects children under age 5 years. Approximately 20-25% of untreated children with KD and 3-5% of those treated with intravenous immunoglobulin therapy develop coronary artery aneurysms (CAAs). The prevalence of CAAs is much higher in male than in female patients with KD, but the underlying factors contributing to susceptibility to CAAs in patients with KD remain unclear.

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Article Synopsis
  • The study evaluated the impact of genetic variations on clinical outcomes in older patients (≥75 years) undergoing percutaneous coronary intervention (PCI) with clopidogrel-based therapy.
  • Patients were categorized into normal, intermediate, and poor metabolizers based on their genotypes, revealing significant differences in 3-year major adverse cardiac events among these groups.
  • The findings indicated that older patients with loss-of-function alleles experienced higher rates of cardiac events and mortality, highlighting the need for tailored antiplatelet strategies in this population.
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This study evaluated the association of atherogenic index of plasma (AIP) with platelet reactivity and clinical outcomes according to acute myocardial infarction (AMI). The composite of 3-year adverse outcomes of all-cause death, myocardial infarction, and cerebrovascular accident was evaluated in 10,735 patients after successful percutaneous coronary intervention with drug-eluting stents. AIP was defined as the base 10 logarithm of the ratio of triglyceride to high-density lipoprotein cholesterol concentration.

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Aims: Doxorubicin (DOX) is a widely used anthracycline anticancer agent; however, its irreversible effects on the heart can result in DOX-induced cardiotoxicity (DICT) after cancer treatment. Unfortunately, the pathophysiology of DICT has not yet been fully elucidated, and there are no effective strategies for its prevention or treatment. In this investigation, the novel role of transducin beta-like protein 1 (TBL1) in developing and regulating DICT was explored.

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Background: Little is known about the association between seasonal variation and prognosis in patients with CS caused by AMI.

Objectives: We investigated the 12-month clinical outcomes in patients treated with percutaneous coronary intervention (PCI) for acute myocardial infarction (AMI) complicated by cardiogenic shock (CS) according to season.

Methods: A total of 695 patients undergoing PCI for AMI complicated by CS was enrolled from 12 centers in South Korea.

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Right-sided infective endocarditis (RSIE) is less common than left-sided infective endocarditis (LSIE) and exhibits distinct epidemiological, clinical, and microbiological characteristics. Previous studies have focused primarily on RSIE in patients with intravenous drug use. We investigated the characteristics and risk factors for RSIE in an area where intravenous drug use is uncommon.

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Article Synopsis
  • South Korea's economic growth over the past two decades has affected the clinical profile of patients with rheumatic mitral stenosis (MS), leading to older patients with more severe conditions and comorbidities like hypertension and atrial fibrillation.
  • Analysis of data from 2,337 patients showed that while the rate of mitral interventions increased, the overall clinical outcomes worsened, indicating a need for improved treatment strategies.
  • Despite stable stroke incidence due to better anticoagulation therapy, the findings emphasize the challenges faced as the healthcare landscape transitions with the country’s development.
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Background: Artificial intelligence (AI) that utilizes deep learning (DL) has potential for systemic disease prediction using retinal imaging. The retina's unique features enable non-invasive visualization of the central nervous system and microvascular circulation, aiding early detection and personalized treatment plans for personalized care. This review explores the value of retinal assessment, AI-based retinal biomarkers, and the importance of longitudinal prediction models in personalized care.

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Clinical significance of residual ischaemia in acute myocardial infarction complicated by cardiogenic shock undergoing venoarterial-extracorporeal membrane oxygenation.

Eur Heart J Acute Cardiovasc Care

July 2024

Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea.

Aims: Although culprit-only revascularization during the index procedure has been recommended in patients with acute myocardial infarction (AMI) complicated by cardiogenic shock (CS), the reduction in residual ischaemia is also emphasized to improve clinical outcomes. However, few data are available about the significance of residual ischaemia in patients undergoing mechanical circulatory supports. This study aimed to evaluate the effects of residual ischaemia on clinical outcomes in patients with AMI undergoing venoarterial-extracorporeal membrane oxygenation (VA-ECMO).

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The Third Nationwide Korean Heart Failure III Registry (KorHF III): The Study Design Paper.

Int J Heart Fail

April 2024

Division of Cardiology, Department of Internal Medicine, Cardiovascular Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.

Unlabelled: With advancements in both pharmacologic and non-pharmacologic treatments, significant changes have occurred in heart failure (HF) management. The previous Korean HF registries, namely the Korea Heart Failure Registry (KorHF-registry) and Korean Acute Heart Failure Registry (KorAHF-registry), no longer accurately reflect contemporary acute heart failure (AHF) patients. Our objective is to assess contemporary AHF patients through a nationwide registry encompassing various aspects, such as clinical characteristics, management approaches, hospital course, and long-term outcomes of individuals hospitalized for AHF in Korea.

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The benefits of intravascular ultrasonography (IVUS)-guided percutaneous coronary intervention (PCI) in the clinical context of cardiogenic shock (CS) complicating acute myocardial infarction are lacking. We aimed to investigate the impact of IVUS-guided PCI in patients with AMI and CS. From the pooled data based on a series of Korean AMI registries during 2011-2020, we identified 1418 consecutive patients who underwent PCI with second generation drug-eluting stent (DES) for AMI and CS.

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Article Synopsis
  • - The study aimed to identify imaging features that can distinguish focal interstitial fibrosis (FIF) from invasive adenocarcinoma (ADC) in patients with persistent part-solid nodules (PSNs), which are often misdiagnosed and treated surgically.
  • - Researchers analyzed CT scans from 44 patients with confirmed FIF and 88 patients with ADC, using morphologic characteristics and various statistical analyses to find key predictive imaging features.
  • - Significant findings included that preserved peritumoral vascular margin, preserved secondary pulmonary lobule margin, and a specific coronal to axial ratio (less than 1.005) can help differentiate FIF from ADC, with an impressive predictive accuracy represented by an AUC of 0.881. *
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Predictive value of plaque characteristics for identification of lesions causing ischemia.

Int J Cardiol

July 2024

Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea. Electronic address:

Article Synopsis
  • * 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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Purpose: In a preclinical study using a swine myocardial infarction (MI) model, a delayed enhancement (DE)-multi-detector computed tomography (MDCT) scan was performed using a hybrid system alongside diagnostic invasive coronary angiography (ICA) without the additional use of a contrast agent, and demonstrated an excellent correlation in the infarct area compared with histopathologic specimens. In the present investigation, we evaluated the feasibility and diagnostic accuracy of a myocardial viability assessment by DE-MDCT using a hybrid system comprising ICA and MDCT alongside diagnostic ICA without the additional use of a contrast agent.

Materials And Methods: We prospectively enrolled 13 patients (median age: 67 years) with a previous MI (>6 months) scheduled to undergo ICA.

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To enhance M-mode echocardiography's utility for measuring cardiac structures, we developed and evaluated an artificial intelligence (AI)-based automated analysis system for M-mode images through the aorta and left atrium [M-mode (Ao-LA)], and through the left ventricle [M-mode (LV)]. Our system, integrating two deep neural networks (DNN) for view classification and image segmentation, alongside an auto-measurement algorithm, was developed using 5,958 M-mode images [3,258 M-mode (LA-Ao), and 2,700 M-mode (LV)] drawn from a nationwide echocardiographic dataset collated from five tertiary hospitals. The performance of view classification and segmentation DNNs were evaluated on 594 M-mode images, while automatic measurement accuracy was tested on separate internal test set with 100 M-mode images as well as external test set with 280 images (140 sinus rhythm and 140 atrial fibrillation).

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Background: Although age and body mass index (BMI) significantly affect platelet reactivity units and clinical outcomes after percutaneous coronary intervention, there are limited data on the relationship between high on-treatment platelet reactivity (HPR) and clinical outcomes on age and BMI differences. Thus, we investigated the association of HPR with clinical outcomes according to age and BMI.

Methods And Results: The study analyzed 11 714 patients who underwent platelet function tests after percutaneous coronary intervention.

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