Publications by authors named "Moo-Nyun Jin"

Article Synopsis
  • Diagonal earlobe crease (DELC) is being studied as a potential indicator of coronary artery disease (CAD) and its link to atrial fibrillation (AF).
  • In a study involving 669 patients under 65 with CAD, researchers found that those with DELC had a higher incidence of AF compared to those without it during a follow-up period of about 45 months.
  • The results suggest that the presence of DELC is associated with nearly double the risk of developing AF in CAD patients, highlighting its potential role in AF detection.
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Objective: To investigate the association between the combined effects of physical activity (PA) intensity and particulate matter ≤10 μm in diameter (PM) and mortality in older adults.

Methods: This nationwide cohort study included older adults without chronic heart or lung disease who engaged in regular PA. Physical activity was assessed by a standardized, self-reported questionnaire that asked the usual frequency of PA sessions with low (LPA), moderate (MPA), or vigorous intensity (VPA).

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Objective: Whether direct stenting (DS) without predilatation during primary percutaneous coronary intervention (PPCI) reduces microvascular dysfunction in patients with ST-elevation myocardial infarction is unclear. We performed a randomized study to assess the effect of DS on microvascular reperfusion.

Methods: Seventy-two patients undergoing PPCI were randomly assigned to the DS or conventional stenting (CS) with predilatation groups.

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Objective: To investigate the associations between exercise habit changes following an incident cardiovascular event and mortality in older adults.

Methods: We analysed the relationship between exercise habit change and all-cause, cardiovascular and non-cardiovascular deaths in adults aged ≥60 years between 2003 and 2012 who underwent two consecutive health examinations within 2 years before and after diagnosis of cardiovascular disease (CVD). They were categorised into four groups according to exercise habit changes: persistent non-exercisers, exercise dropouts, new exercisers and exercise maintainers.

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Background: Regular exercise improves the functional ability and quality of life of patients with heart failure (HF). However, studies on the results of intensity of exercise in the older population are scarce, especially in the Asian population.

Method And Results: A total of 8982 older people (age 65 years) with HF were selected from the Korean National Health Insurance Service-Senior database (2005-2012).

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Purpose: Only a few Asian studies have discussed the impact of statin intensity on clinical outcomes in patients with peripheral artery disease (PAD). We aimed to investigate the clinical impact of statin intensity in patients with PAD after endovascular revascularization.

Materials And Methods: From April 2009 to June 2019, 376 patients with lower extremity PAD treated with endovascular revascularization were enrolled.

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Objective: To quantify the dose-response relationship between moderate to vigorous physical activity and primary cardiac arrest (PCA).

Patients And Methods: There were 504,840 participants older than 18 years who underwent the Korean National Health Screening Program, including a self-administered questionnaire for physical activity from January 1, 2009, through December 31, 2014. Physical activity levels were converted into metabolic equivalent tasks (METs) per week and categorized to correspond with multiples of public health recommendations.

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Takotsubo syndrome (TS) is a reversible form of cardiomyopathy characterized by transient systolic dysfunction with regional wall motion abnormalities and absence of coronary artery obstruction, which can be precipitated by severe emotional or physical stress. Its clinical presentation is similar to that of acute coronary syndrome. However, TS presenting with atrioventricular (AV) block with ventricular asystole is rarely reported.

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Inflammation plays an important role in the progression of peripheral artery disease (PAD). We investigated the predictive value of the C-reactive protein-to-albumin ratio (CAR) on the severity of PAD and outcomes after endovascular therapy (EVT). Patients (n = 307) with PAD who underwent EVT were retrospectively reviewed and categorized according to CAR tertiles.

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Background: Patients with cardiovascular disease (CVD) tend to have higher mortality rates and reduced physical activity (PA). We aimed to evaluate the effect of PA on mortality in older adults with specific CVD.

Methods: We enrolled 68,223 participants ( = 23,871 with CVD, = 44,352 without CVD) aged ≥65 years with available physical activity data between 2005 and 2012 from the Korean National Health Insurance Service of Korea-Senior database.

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Importance: Current guidelines recommend 500 to 999 metabolic equivalent (MET)-minutes per week (MET-min/wk) of regular physical activity. However, evidence regarding the association between light-intensity physical activity (LPA) and dementia in older adults is inconsistent.

Objective: To assess the association between physical activity and new-onset dementia, focusing on the dose-response association between physical activity and dementia and the association of LPA with the incidence of dementia.

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Background: An association has been identified between mitral valve prolapse (MVP) and sudden cardiac arrest (SCA), and ventricular arrhythmias (VA). This study aimed to elucidate predictive factors for SCA or VA in MVP patients.

Methods: MVP patients who underwent cardiac magnetic resonance (CMR) were retrospectively included.

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Background: The relationship between the characteristics of cardiac implantable electronic device (CIED) leads and subclinical cardiac perforations remains unclear. This study aimed to evaluate the incidence of subclinical cardiac perforation among various CIED leads using cardiac computed tomography (CT).

Methods: A total of 271 consecutive patients with 463 CIED leads, who underwent cardiac CT after CIED implantation, were included in this retrospective observational study.

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Background: Short QT syndrome is a rare, inherited channelopathy associated with sudden cardiac arrest (SCA) but the characteristics and prognosis of short QT interval (SQTI) in Korean patients remain unclear. This study aimed to determine the clinical characteristics and outcomes of SQTI in a Korean population.

Methods: Consecutive patients with SQTI from January 1999 to March 2019 in three university hospitals in South Korea were recruited.

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Background: We aimed to elucidate the long-term prognosis of nonspecific intraventricular conduction delay (NIVCD) in patients with structurally normal heart.

Methods: We included 107,838 patients (age, 52.1 ± 15.

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Background We previously reported the benefit of linear ablation from the superior vena cava to the right atrial septum (SVC-L) within a year after circumferential pulmonary vein isolation (CPVI) in patients with paroxysmal atrial fibrillation (AF). We explored the long-term effects of SVC-L and its potential related mechanisms. Methods and Results Among 2140 consecutive patients with AF ablation, we included 614 patients (73.

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Although exercise prevents cardiovascular disease and mortality, vigorous exercise and endurance athletics can cause atrial fibrillation (AF). However, no large cohort study has assessed the relationship between physical activity and AF in the general population. We assessed the effect of physical activity at different energy expenditures on the incidence of AF.

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Background: Although atrial fibrillation (AF) has a risk of cognitive dysfunction, it is not clear whether AF catheter ablation improves or worsens cognitive function. This prospective case-control study sought to assess the 1-year serial changes in the cognitive function with or without AF catheter ablation.

Methods: We evaluated the Montreal Cognitive Assessment score in 308 patients (71.

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Background: Radiofrequency catheter ablation (RFCA) for accessory pathways (APs) at the site of prior valve surgery (VS) remains challenging. We aimed to clarify the factors associated with successful RFCA for such APs.

Methods: Upon reviewing a RFCA registry and previous case reports, we included nine patients who underwent RFCA of APs at the site of prior VS (total-VS group; age, 34.

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Purpose: This study aimed to elucidate which echocardiographic criteria at three time points, for cardiac resynchronization therapy (CRT) response, are accurate in discriminating the hierarchical clinical composite end point (HCCEP).

Materials And Methods: We included 120 patients (age, 66.1±12.

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Purpose: Despite undergoing successful catheter ablation of typical atrial flutter (AFL), patients remain at increased risk for ischemic stroke. However, data on risk prediction tools for the development of stroke after AFL ablation are lacking. This study investigates whether CHA₂DS₂-VASc score is useful for predicting ischemic stroke after successful ablation of typical AFL.

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Purpose: The identification of sick sinus syndrome (SSS) in patients with atrial flutter (AFL) is difficult before the termination of AFL. This study investigated the patient characteristics used in predicting a high risk of SSS after AFL ablation.

Materials And Methods: Out of 339 consecutive patients who had undergone radiofrequency ablation for AFL from 1991 to 2012, 27 (8%) had SSS (SSS group).

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Esophageal involvement of pemphigus vulgaris is rare, and when present, the most common presenting symptoms reported in the medical literature are odynophagia and dysphagia. Here, we present two cases of pemphigus vulgaris presenting with upper gastrointestinal hemorrhage because of esophageal involvement of the disease. In case 1, a 41-year-old female patient with a prior diagnosis of pemphigus vulgaris presented with hematemesis.

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