Cardiology / Editorial Uncertain benefit, certain harm: the anticoagulation paradox in hemodialysis—re-evaluation of stroke prevention and bleeding risk in end-stage kidney disease Tae-Wan Chung Korean J Intern Med. 2026;41(1):3-5.   Published online January 1, 2026 DOI: https://doi.org/10.3904/kjim.2025.406

Cardiology / Image of interest Percutaneous retrieval of a trapped intravascular ultrasonography catheter within an implanted stent: failure and success Daeung Ohn, Yeon-Jik Choi, Junghoon Lee, Suk-Min Seo Korean J Intern Med. 2026;41(1):178-180.   Published online December 4, 2025 DOI: https://doi.org/10.3904/kjim.2025.165

Cardiology / Original Article Enhanced prediction of left ventricular ejection fraction using electrocardiography with the addition of clinical metadata Hyun Woong Park, Taeseen Kang, Young-Hoon Seo, Jae-Hyeong Park Korean J Intern Med. 2026;41(1):118-130.   Published online January 1, 2026 DOI: https://doi.org/10.3904/kjim.2025.104                      Background/Aims: Left ventricular ejection fraction (LVEF) is a key echocardiographic parameter for assessing LV systolic function, guiding the management of many cardiovascular diseases, including heart failure (HF). While traditional electrocardiography (ECG) has been widely used in clinical pract..

Cardiology / Original Article Comparative efficacy and safety of warfarin and direct oral anticoagulants in patients with end-stage kidney disease and atrial fibrillation Yujin Yang, Sun Hwa Lee, Wonmook Hwang, Ji Hoon Jung, Jae-Hyeong Park Korean J Intern Med. 2026;41(1):107-117.   Published online January 1, 2026 DOI: https://doi.org/10.3904/kjim.2025.052              Crossref 1                      Background/Aims: Patients with atrial fibrillation (AF) and end-stage kidney disease (ESKD) require careful anticoagulation because thrombotic and bleeding risks are both elevated. We evaluated the efficacy and safety of warfarin, direct oral anticoagulants (DOACs), and no anticoagulation in Korean ..

Cardiology / Original Article Long-term clinical outcome and risk stratification across stages of cardiovascular-kidney-metabolic syndrome in a nationwide cohort Hyun-Jin Kim, Byung Sik Kim, Hasung Kim, Jungkuk Lee, Ha Hye Jo, Dong Wook Kim, Jeong-Hun Shin, Ki-Chul Sung Korean J Intern Med. 2025;40(6):975-989.   Published online October 28, 2025 DOI: https://doi.org/10.3904/kjim.2025.194                      Background/Aims: Cardiovascular-kidney-metabolic (CKM) syndrome is a continuum of metabolic, cardiovascular, and kidney dysfunctions. This study aimed to evaluate the association between CKM stages and the risk of adverse composite clinical outcomes. Methods: This retrospective cohort study used da..

Cardiology / Original Article Association of the triglyceride-glucose index with cardiovascular outcomes across cardiovascular-kidney-metabolic syndrome stages Byung Sik Kim, Hyun-Jin Kim, Shinje Moon, Hasung Kim, Jungkuk Lee, Jeong-Hun Shin Korean J Intern Med. 2025;40(6):961-974.   Published online October 31, 2025 DOI: https://doi.org/10.3904/kjim.2025.082                      Background/Aims: Cardiovascular-kidney-metabolic (CKM) syndrome reflects the interplay between metabolic dysfunction, chronic kidney disease, and cardiovascular disease. Insulin resistance (IR) is a key driver of CKM and is associated with adverse cardiovascular outcomes. The triglyceride-glucose (T..

Cardiology / Review Coagulopathy and platelet abnormalities in patients with inflammatory bowel disease Dae Sung Kim, Won Moon Korean J Intern Med. 2025;40(6):866-875.   Published online October 31, 2025 DOI: https://doi.org/10.3904/kjim.2025.118              Crossref 1                 Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, is associated with a hypercoagulable state that increases thromboembolic complication risk. The interaction between inflammation and coagulation increases risk by upregulating coagulation factors, downregulating natu..

Cardiology / Image of interest Left main coronary artery compression associated with unfavorable thoracic anatomy Daeung Ohn, Yeon-Jik Choi, Jin-Young Yoo, Suk-Min Seo, Junghoon Lee Korean J Intern Med. 2025;40(6):1065-1067.   Published online October 31, 2025 DOI: https://doi.org/10.3904/kjim.2025.172

Cardiology / Original Article Impact of guideline-directed medical therapy on the cardiac or non-cardiac death in acute myocardial infarction Jin-Ho Choi, Dahee Hyun, Seung Ho Hur, Seung Woon Rha, Seung Jae Joo, Hyo-Soo Kim, Myung Ho Jeong; on behalf of KAMIR-NIH investigators Korean J Intern Med. 2025;40(5):780-789.   Published online August 29, 2025 DOI: https://doi.org/10.3904/kjim.2025.068              Web of Science 1    Crossref 1                      Background/Aims: While the clinical effectiveness of guideline-directed medical therapy (GDMT) is well established in patients with acute myocardial infarction (AMI), its specific impact on cause-specific mortality remains unclear. This study aimed to investigate the impact of GDMT on both cardiac a..

Cardiology / Original Article Automatic quantitative analysis of atherosclerotic aortic plaques in patients with embolic cerebral infarction using deep learning Hye Jin Bang, Jae-Hyeong Park, Sun Geu Chae, Suk Joo Bae, Ji-Hoon Jung, You Hee Cho, Jong Won Park, Dae-Won Kim, Jung Sun Cho Korean J Intern Med. 2025;40(5):767-779.   Published online August 26, 2025 DOI: https://doi.org/10.3904/kjim.2024.360              Crossref 1                      Background/Aims: Transesophageal echocardiography (TEE) is a commonly used imaging modality for assessing embolic stroke of undetermined source (ESUS) in clinical practice. We aimed to develop an automatic plaque segmentation model based on U-net and evaluate its clinical usefulness in patients with..

Cardiology / Original Article Effect of tegoprazan on temporal variability of platelet reactivity in patients treated with clopidogrel after coronary stenting Oh-Hyun Lee, Ji Woong Roh, Yongcheol Kim, Eui Im, Deok-Kyu Cho Korean J Intern Med. 2025;40(5):759-766.   Published online March 25, 2025 DOI: https://doi.org/10.3904/kjim.2024.399                      Background/Aims: Data on the interactions between clopidogrel and tegoprazan are limited. We compared the effects of tegoprazan and proton-pump inhibitors (PPIs) on platelet reactivity. Methods: Using database data from March 2020 to January 2023, we retrospectively evaluated 262 patients who were ..

Cardiology / Review Physical activity for prevention of cardiovascular disease: consensus statement of Korean Society of Cardio-cerebrovascular Disease Prevention Ye Seul Yang, Eu Jeong Ku, Seung-Hyun Ko, Eun-Jung Rhee, Sang-Hyun Ihm, Sung Hee Choi, Won-Young Lee; on Behalf of Committee of Clinical Practice Guideline; Korean Society of Cardio-cerebrovascular Disease Prevention Korean J Intern Med. 2025;40(5):696-709.   Published online August 29, 2025 DOI: https://doi.org/10.3904/kjim.2025.206                 Cardiovascular disease (CVD) remains the leading cause of mortality worldwide, highlighting the need for effective preventive strategies. This consensus statement emphasizes the critical role of regular physical activity, including aerobic and muscle-strengthening exercises, in reducing key CVD risk..

Cardiology / Editorial Turning evidence into action: the real challenge of guideline-directed medical therapy in acute myocardial infarction Jong Shin Woo Korean J Intern Med. 2025;40(5):693-695.   Published online August 29, 2025 DOI: https://doi.org/10.3904/kjim.2025.251

Cardiology / Editorial Hidden benefits beyond herpes zoster: a potential preventive strategy against hepatobiliary diseases Dong Wook Kim, Tae Jun Song Korean J Intern Med. 2025;40(5):691-692.   Published online August 29, 2025 DOI: https://doi.org/10.3904/kjim.2025.262

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              Crossref 1

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              Web of Science 1    Crossref 2                      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              Crossref 1                      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 6    Crossref 7                      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..