Cardiology / Image of interest Beat-to-beat alternans Chan-Hee Lee, Melvin M. Scheinman Korean J Intern Med. 2025;40(4):687-688.   Published online May 21, 2025 DOI: https://doi.org/10.3904/kjim.2024.372

Cardiology / Original Article Detection rate by time period and predictors of serious arrhythmias in unexplained syncope: a multicenter implantable loop recorder registry study Juwon Kim, Il-Young Oh, Myung-Jin Cha, Jinhee Ahn, So-Ryoung Lee, Sung Ho Lee, Jae-Sun Uhm, Pil-Sung Yang, Jaemin Shim, Hyoung-Seob Park, Junbeom Park, Jun Hyung Kim, Ki-Hun Kim, Jumsuk Ko, Hong Euy Lim, Ju Youn Kim Korean J Intern Med. 2025;40(4):616-625.   Published online July 1, 2025 DOI: https://doi.org/10.3904/kjim.2024.364              Crossref 1                      Background/Aims: Although an implantable loop recorder (ILR) is a valuable tool for investigation of unexplained syncope, there are limited data regarding time course to diagnosis and predictors of serious arrhythmias as a cause of unexplained syncope. We sought to investigate diagnosis rate by time..

Cardiology / Review Role of catheter ablation in patients with heart failure and atrial fibrillation Min-Su Jung, Hyoung-Seob Park Korean J Intern Med. 2025;40(4):533-545.   Published online July 1, 2025 DOI: https://doi.org/10.3904/kjim.2024.284                 Atrial fibrillation (AF) and heart failure (HF) frequently coexist with other cardiovascular conditions and adversely affect each other. Over the past few decades, there have been therapeutic advances in AF and HF; however, whether rate-control or rhythm-control is the superior approach for these pa..

Cardiology / Editorial Unexplained syncope: what time-to-diagnosis and risk profiles tell us Yoon Jung Park Korean J Intern Med. 2025;40(4):529-530.   Published online July 1, 2025 DOI: https://doi.org/10.3904/kjim.2025.180

Cardiology / Original Article Short-term effects of PCSK-9 inhibitors on percutaneous coronary intervention in patients with acute coronary syndrome Dong Hyun Gim, In Young Choi, Young-Jae Ki, Hyun Kuk Kim, Sung Soo Kim, Keun-Ho Park, Heesang Song, Dong-Hyun Choi Korean J Intern Med. 2025;40(3):438-448.   Published online April 30, 2025 DOI: https://doi.org/10.3904/kjim.2024.363                      Background/Aims: Proprotein-converting enzyme subtilisin-kexin type 9 (PCSK9) inhibitors act more promptly and efficiently than statins and reduce the risk of cardiovascular events in patients with acute coronary syndrome (ACS). This study aimed to assess the short-term effects of perioperative admi..

Cardiology / Original Article Fact sheet: nationwide trends in dietary intakes among Korean adults, 2013-2022 Hannah Oh, Garam Jo, Oh Yoen Kim, Hyunjung Lim, SuJin Song, Jeong-Hwa Choi, Jae Hyun Bae, Eun-Sun Jin, Rockli Kim, Yujin Lee, In-Kyung Jeong, Min-Jeong Shin; on Behalf of the Committee of Nutrition and Public Relation of the Korean Society of Lipid and Atherosclerosis Korean J Intern Med. 2025;40(3):427-437.   Published online March 25, 2025 DOI: https://doi.org/10.3904/kjim.2024.337              Web of Science 1    Crossref 1                      Background/Aims: Cardiovascular disease is the leading cause of death worldwide. This study aimed to investigate the recent nationwide trends in major dietary risk factors for dyslipidemia and atherosclerosis. Methods: We estimated age-standardized mean intakes of fresh fruits, fresh vegetables, wh..

Cardiology / Review Obesity and heart failure with preserved ejection fraction: focus on new drugs and future direction in medical treatment Se-Eun Kim, Byung-Su Yoo Korean J Intern Med. 2025;40(3):357-370.   Published online April 30, 2025 DOI: https://doi.org/10.3904/kjim.2024.387                 Obesity is a major risk factor for heart failure with preserved ejection fraction (HFpEF) and contributes through multiple pathophysiological pathways, including systemic inflammation, neurohormonal activation, and mechanical inhibition. The treatment of obesity has shown significant potential for i..

Cardiology / Original Article Sex-specific impact of the COVID-19 outbreak on the incidence of metabolic syndrome: a comparative study of 2018–2019 and 2020–2021 Kyeong-Hyeon Chun, Hyun-Jin Kim, Dae Ryong Kang, Jang Young Kim, Wonjin Kim, Yong Whi Jeong, Seung Hwan Han, Kwang Kon Koh; on behalf of the Taskforce Team of the Metabolic Syndrome Fact Sheet of the Korean Society of Cardiometabolic Syndrome Korean J Intern Med. 2025;40(2):262-274.   Published online March 1, 2025 DOI: https://doi.org/10.3904/kjim.2024.288              Crossref 1                      Background/Aims: The coronavirus disease 2019 (COVID-19) pandemic has significantly impacted global health, exacerbated metabolic health issues, and altered lifestyle behaviors. This study examined the sex-specific impact of the COVID-19 outbreak on the incidence of metabolic syndrome using data fro..

Cardiology / Original Article Explainable paroxysmal atrial fibrillation diagnosis using an artificial intelligence-enabled electrocardiogram Yeongbong Jin, Bonggyun Ko, Woojin Chang, Kang-Ho Choi, Ki Hong Lee Korean J Intern Med. 2025;40(2):251-261.   Published online February 21, 2025 DOI: https://doi.org/10.3904/kjim.2024.130                 Background/Aims: Atrial fibrillation (AF) significantly contributes to global morbidity and mortality. Paroxysmal atrial fibrillation (PAF) is particularly common among patients with cryptogenic strokes or transient ischemic attacks and has a silent nature. This study aims to develop reliable artifi..

Cardiology / Review Sex differences in diagnosis and treatment of heart failure: toward precision medicine Soo Yong Lee, Seong-Mi Park Korean J Intern Med. 2025;40(2):196-207.   Published online March 1, 2025 DOI: https://doi.org/10.3904/kjim.2024.338              Web of Science 1    Crossref 1                 There are sex-related differences in the pathophysiology and phenotype of heart failure (HF) as well as the pharmacokinetics and pharmacodynamics of drugs between women and men due to biological differences, such as heart and vessel size, response to blood volume and pressure, body water and muscle ..

Cardiology / Editorial Pandemics extend beyond infectious diseases: the emerging threat of non-communicable diseases Moojun Kim, Chan Joo Lee Korean J Intern Med. 2025;40(2):168-169.   Published online March 1, 2025 DOI: https://doi.org/10.3904/kjim.2025.046

Cardiology / Review Screening and diagnosis of atrial fibrillation using wearable devices Yoon Jung Park, Myung Hwan Bae Korean J Intern Med. 2025;40(1):7-14.   Published online May 3, 2024 DOI: https://doi.org/10.3904/kjim.2023.521              Web of Science 2    Crossref 2                 In recent years, the development and use of various devices for the screening of atrial fibrillation (AF) have significantly increased. Such devices include 12-lead electrocardiogram (ECG), photoplethysmography systems, and single-lead ECG and ECG patches. This review outlines several studies that h..

Cardiology / Original Article Predictive value and optimal cut-off level of high-sensitivity troponin T in patients with acute pulmonary embolism Moojun Kim, Chang-Ok Seo, Yong-Lee Kim, Hangyul Kim, Hye Ree Kim, Yun Ho Cho, Jeong Yoon Jang, Jong-Hwa Ahn, Min Gyu Kang, Kyehwan Kim, Jin-Sin Koh, Seok-Jae Hwang, Jin Yong Hwang, Jeong Rang Park Korean J Intern Med. 2025;40(1):65-77.   Published online January 1, 2025 DOI: https://doi.org/10.3904/kjim.2024.131                      Background/Aims: Elevated troponin levels predict in-hospital mortality and influence decisions regarding thrombolytic therapy in patients with acute pulmonary embolism (PE). However, the usefulness of high-sensitivity troponin T (hsTnT) regarding PE remains uncertain. We aimed to establish the opti..

Cardiology / Image of interest Femoral veno-arterial extracorporeal membrane oxygenation with a novel biatrial cannula for venous drainage and left ventricular venting Jun Hwan Cho, Woosik Han, Eun Jeong Cho, Sang-Yeub Lee, Sang-Wook Kim Korean J Intern Med. 2025;40(1):160-161.   Published online December 18, 2024 DOI: https://doi.org/10.3904/kjim.2024.046

Cardiology / Review Current status of modifiable risk factors for cardiovascular disease in Korean women In-Jeong Cho, Mi-Seung Shin Korean J Intern Med. 2025;40(1):15-23.   Published online October 22, 2024 DOI: https://doi.org/10.3904/kjim.2024.077              Crossref 1                 Hypertension, diabetes mellitus, dyslipidemia, obesity, and smoking are the primary modifiable risk factors contributing to the increasing morbidity and mortality rates from cardiovascular disease (CVD) among Korean women. Significant sex-related differences exist in the prevalence, awareness, treat..

Cardiology / Original Article Impact of discharge checklist on guideline-directed medical therapy and mid-term prognosis in heart failure Won-Seok Lee, Kyu-Sun Lee, Helsi Rismiati, Hae-Young Lee Korean J Intern Med. 2024;39(6):945-956.   Published online October 24, 2024 DOI: https://doi.org/10.3904/kjim.2024.088                      Background/Aims: Despite the proven benefit of the guideline-directed medical therapy (GDMT), it remains underutilized in patients hospitalized with acute heart failure (HF). We aimed to evaluate the impact of the discharge checklist on GDMT installation and the prognosis of HF patients. Methods: T..

Cardiology / Image of interest Systemic venous air embolism after percutaneous lung biopsy Min Kyung Jung, Shin Young Kim, Jeong Min Ko Korean J Intern Med. 2024;39(6):1021-1022.   Published online August 13, 2024 DOI: https://doi.org/10.3904/kjim.2024.114

Cardiology / Original Article Efficacy of single-dose evolocumab injection in early-phase acute myocardial infarction: a retrospective single-center study Yongcheol Kim, Ji Woong Roh, Oh-Hyun Lee, Seok-Jae Heo, Eui Im, Deok-Kyu Cho, Byeong-Keuk Kim Korean J Intern Med. 2024;39(5):793-800.   Published online June 24, 2024 DOI: https://doi.org/10.3904/kjim.2024.080              Web of Science 2    Crossref 2                      Background/Aims: Achieving rapid reduction of low-density lipoprotein cholesterol (LDL-C) levels below 55 mg/dL in patients with acute myocardial infarction (AMI) can be challenging with statins alone. This single-center, retrospective study aimed to assess the impact of single-dose injection of evo..

Cardiology / Review 2024 KSoLA consensus on secondary dyslipidemia Hoyoun Won, Jae Hyun Bae, Hyunjung Lim, Minji Kang, Minjoo Kim, Sang-Hak Lee; on behalf of the Clinical Practice Guidelines Committee, Korean Society of Lipid and Atherosclerosis (KSoLA) Korean J Intern Med. 2024;39(5):717-730.   Published online August 30, 2024 DOI: https://doi.org/10.3904/kjim.2024.156              Web of Science 1    Crossref 1                 Elevated blood cholesterol and triglyceride levels induced by secondary causes are frequently observed. The identification and appropriate handling of these causes are essential for secondary dyslipidemia treatment. Major secondary causes of hypercholesterolemia and hypertriglyceridemia include an u..

Cardiology / Review Current evidence for prognostic benefit of intravascular imaging-guided percutaneous coronary intervention in chronic total occlusion intervention David Hong, Sung Eun Kim, Seung Hun Lee, Seung-Jae Lee, Jong-Young Lee, Sang Min Kim, Sang Yeub Lee, Woochan Kwon, Ki Hong Choi, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Joo-Yong Hahn, Joo Myung Lee; The RENOVATE-COMPLEX-PCI Investigators Korean J Intern Med. 2024;39(5):702-716.   Published online February 29, 2024 DOI: https://doi.org/10.3904/kjim.2023.420                 Although percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) has been increasing in recent years, CTO PCI is still one of the most challenging procedures with relatively higher rates of procedural complications and adverse clinical events after PCI. Due to the innate limitatio..