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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
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..
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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
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 ..
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Cardiology / Original Article
The current status and outcomes of in-hospital P2Y12 receptor inhibitor switching in Korean patients with acute myocardial infarction
Keun-Ho Park, Myung Ho Jeong, Hyun Kuk Kim, Young-Jae Ki, Sung Soo Kim, Youngkeun Ahn, Hyun Yi Kook, Hyo-Soo Kim, Hyeon Cheol Gwon, Ki Bae Seung, Seung Woon Rha, Shung Chull Chae, Chong Jin Kim, Kwang Soo Cha, Jong Seon Park, Jung Han Yoon, Jei Keon Chae, Seung Jae Joo, Dong-Joo Choi, Seung Ho Hur, In Whan Seong, Myeong Chan Cho, Doo Il Kim, Seok Kyu Oh, Tae Hoon Ahn, Jin Yong Hwang; on behalf of the KAMIR-NIH registry investigators
Korean J Intern Med. 2022;37(2):350-365. Published online January 12, 2022
Background/Aims: While switching strategies of P2Y12 receptor inhibitors (RIs) have sometimes been used in acute myocardial infarction (AMI) patients, the current status of in-hospital P2Y12RI switching remains unknown.
Methods: Overall, 8,476 AMI patients who underwent successful revascularization..
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Cardiology / Original Article
Clinical significance of high on-treatment platelet reactivity in patients with prolonged clopidogrel therapy
Sehun Kim, Donghoon Han, Jae Hyuk Choi, Eun-Joo Park, Dong Geum Shin, Min-Kyung Kang, Seonghoon Choi, Namho Lee, Jung Rae Cho
Korean J Intern Med. 2021;36(Suppl 1):S80-S89. Published online February 25, 2021
Background/Aims: Prolonged dual antiplatelet therapy (DAPT) with aspirin and clopidogrel beyond 1 year has been shown to reduce ischemic events at the expense of increased bleeding. However, limited data are available on the clinical significance of platelet reactivity (PR) at 1 year.
Methods: We r..
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Cardiology / Original Article
The effect of antiplatelet drug on coronary endothelial and microvascular function: comparison with ticagrelor and clopidogrel
Woong Gil Choi, Gi Chang Kim, Cheol Ho Lee, Hye Young Kim, Dong Woon Kim
Korean J Intern Med. 2021;36(2):352-361. Published online June 23, 2020
Background/Aims: Coronary endothelial and microvascular function play important roles in cardiovascular disease. We aimed to evaluate the effect of ticagrelor on coronary artery function and tested the antiplatelet effect of low dose ticagrelor in East-Asian patients.
Methods: Sixty-one consecutive..
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Hemato-oncology / Original Article
The role of platelet function analyzer-200 in predicting perioperative bleeding risk
Eun Sang Yu, Min Ji Jeon, Ka-Won Kang, Byung-Hyun Lee, Eun Joo Kang, Yong Park, Se Ryeon Lee, Hwa Jung Sung, Chul Won Choi, Byung Soo Kim, Dae Sik Kim
Korean J Intern Med. 2020;35(5):1199-1209. Published online February 6, 2020
Background/Aims: Various preoperative screening tests, such as platelet count, prothrombin time, activated partial thromboplastin time, and bleeding time, have been widely used to evaluate the risk of bleeding during surgery. Use of platelet function analyzer (PFA)-100/200 for assessing platelet fun..
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Hemato-oncology / Original Article
Immature platelet fraction based diagnostic predictive scoring model for immune thrombocytopenia
Min Ji Jeon, Eun Sang Yu, Ka-Won Kang, Byung-Hyun Lee, Yong Park, Se Ryeon Lee, Hwa Jung Sung, Soo Yong Yoon, Chul Won Choi, Byung Soo Kim, Dae Sik Kim
Korean J Intern Med. 2020;35(4):970-978. Published online April 10, 2020
Background/Aims: The diagnosis of immune thrombocytopenia (ITP) is based on clinical manifestations and there is no gold standard. Thus, even hematologic malignancy is sometimes misdiagnosed as ITP and adequate treatment is delayed. Therefore, novel diagnostic parameters are needed to distinguish IT..
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Nephrology / Original Article
Effects of aspirin resistance and mean platelet volume on vascular access failure in hemodialysis patients
AJin Cho, Myung Jin Choi, Young-Ki Lee, Han Chae Hoon, Ja-Ryong Koo, Jong-Woo Yoon, Jung-Woo Noh
Korean J Intern Med. 2019;34(6):1304-1312. Published online July 23, 2018
Background/Aims: Maintaining the patency of vascular access (VA) in hemodialysis (HD) patients is important and can be life-saving. We investigated the effects of aspirin resistance and mean platelet volume (MPV) on VA failure in HD patients.
Methods: We enrolled 163 patients on maintenance HD. VA ..
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Gastroenterology / Original Article
Platelet count is associated with sustained virological response rates in treatments for chronic hepatitis C
Baek Gyu Jun, Eui Ju Park, Woong Cheul Lee, Jae Young Jang, Soung Won Jeong, Young Don Kim, Gab Jin Cheon, Young Sin Cho, Sae Hwan Lee, Hong Soo Kim, Yun Nah Lee, Sang Gyune Kim, Young Seok Kim, Boo Sung Kim
Korean J Intern Med. 2019;34(5):989-997. Published online March 14, 2018
Background/Aims: This study was conducted to clarify the sustained virological response (SVR) prediction ability of baseline and treatment-related factors in patients with chronic hepatitis C virus (HCV) infection.
Methods: This retrospective study collected data at four tertiary referral hospitals..
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Cardiology / Original Article
Anti-platelet effects of epigallocatechin-3-gallate in addition to the concomitant aspirin, clopidogrel or ticagrelor treatment
Hyung Joon Joo, Ji-Young Park, Soon Jun Hong, Kyoung-Ah Kim, Seung Hoon Lee, Jae-Young Cho, Jae Hyoung Park, Cheol Woong Yu, Do-Sun Lim
Korean J Intern Med. 2018;33(3):522-531. Published online October 19, 2017
Background/Aims: Although epigallocatechin-3-gallate (EGCG), which is found in high contents in the dried leaves of green tea, has been reported to have an anti-platelet effect, synergistic effects of EGCG in addition to current anti-platelet medications remains to be elucidated.
Methods: Blood sam..
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Infectious diseases / Original Article
Diagnostic role of mean platelet volume and neutrophil to lymphocyte ratio in childhood brucellosis
Şefika Elmas Bozdemir, Yasemin Ay Altıntop, Salih Uytun, Humeyra Aslaner, Yasemin Altuner Torun
Korean J Intern Med. 2017;32(6):1075-1081. Published online December 14, 2016
Background/Aims: Brucellosis patients present various non-specific clinical symptoms, such as fever, fatigue, sweating, joint pain, arthritis, myalgia, and headache. Based on the nonspecifity of its clinical signs and symtoms, we decided to evaluate whether mean platelet volume (MPV) , neutrophil to..
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Cardiology / Review
Stent thrombosis and optimal duration of dual antiplatelet therapy after coronary stenting in contemporary practice
Min Soo Cho, Duk-Woo Park
Korean J Intern Med. 2017;32(5):769-779. Published online August 22, 2017
The introduction of drug-eluting stents (DES) in the practice of percutaneous coronary intervention (PCI) has substantially reduced angiographic and clinical restenosis but is associated with an increasing propensity for very late stent thrombosis (ST). Among several clinical, lesion, or procedure-r..
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Hemato-oncology / Original Article
Myeloma prognostic index at diagnosis might be a prognostic marker in patients newly diagnosed with multiple myeloma
Dae Sik Kim, Eun Sang Yu, Ka-Won Kang, Se Ryeon Lee, Yong Park, Hwa Jung Sung, Chul Won Choi, Byung Soo Kim
Korean J Intern Med. 2017;32(4):711-721. Published online November 4, 2016
Background/Aims: The aims of this study were to identify the value of inflammatory markers as pretreatment prognostic factors for patients with multiple myeloma (MM) and to estimate the value of a prognostic index including these markers at diagnosis.
Methods: A total of 273 newly diagnosed MM pati..
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Cardiology / Original Article
Blood count parameters can predict the severity of coronary artery disease
Hilal Bektas Uysal, Bekir Dağlı, Cağdaş Akgüllü, Mücahit Avcil, Cemil Zencir, Mediha Ayhan, Hulki Meltem Sönmez
Korean J Intern Med. 2016;31(6):1093-1100. Published online April 7, 2016
Background/Aims: Because of the inflammatory nature of coronary artery disease (CAD), both platelets and white blood cells have been investigated for years. The aim of this study was to investigate the relationships between some prominently hematologic blood count parameters (mean platelet volume [M..
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Cardiology / Review
Mean platelet volume: a potential biomarker of the risk and prognosis of heart disease
Dong-Hyun Choi, Seong-Ho Kang, Heesang Song
Korean J Intern Med. 2016;31(6):1009-1017. Published online October 24, 2016
Platelets are essential for progression of atherosclerotic lesions, plaque destabilization, and thrombosis. They secrete and express many substances that are crucial mediators of coagulation, inflammation, and atherosclerosis. Mean platelet volume (MPV) is a precise measure of platelet size, and is ..
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Cardiology / Original Article
A pharmacodynamic study of the optimal P2Y12 inhibitor regimen for East Asian patients with acute coronary syndrome
Ji Hyun Lee, Sung Gyun Ahn, Bonil Park, Sang Wook Park, Yong Seok Kang, Jun-Won Lee, Young Jin Youn, Min-Soo Ahn, Jang-Young Kim, Byung-Su Yoo, Seung-Hwan Lee, Junghan Yoon
Korean J Intern Med. 2015;30(5):620-628. Published online August 27, 2015
Background/Aims: Newer P2Y12 inhibitors, such as prasugrel and ticagrelor, have greater antiplatelet efficacy but may increase the risk of bleeding. In this study, we compared the pharmacodynamic efficacy of prasugrel and ticagrelor in East Asian patients with acute coronary syndrome (ACS..
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Original Article
Detection of Clopidogrel Hyporesponsiveness Using a Point-of-Care Assay and the Impact of Additional Cilostazol Administration after Coronary Stent Implantation in Diabetic Patients
Tae-Hyun Yang, Doo-Il Kim, Dong-Kie Kim, Jae-Sik Jang, Ung Kim, Sang-Hoon Seol, Dae-Kyeong Kim, Geu-Ru Hong, Jong-Seon Park, Dong-Gu Shin, Young-Jo Kim, Yun-Kyeong Cho, Chang-Wook Nam, Seung-Ho Hur, Kwon-Bae Kim, Dong-Soo Kim
Korean J Intern Med. 2011;26(2):145-152. Published online June 1, 2011
Background/AimsImpaired responsiveness to clopidogrel is common in patients with type 2 diabetes mellitus (DM). The aim of this study was to evaluate the clinical application of a point-of-care assay to detect impaired responsiveness to clopidogrel after coronary stent implant..
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Original Article
The Impact of Generic Clopidogrel Bisulfate on Platelet Inhibition in Patients with Coronary Artery Stents: Results of the ACCEL-GENERIC Study
Young-Hoon Jeong, Jin-Sin Koh, Min-Kyung Kang, Yeon-Jeong Ahn, In-Suk Kim, Yongwhi Park, Seok-Jae Hwang, Choong Hwan Kwak, Jin-Yong Hwang
Korean J Intern Med. 2010;25(2):154-161. Published online June 1, 2010
Background/AimsIn patients with coronary artery stents, the cost of clopidogrel has been cited as a factor in the premature discontinuation of therapy. Thus, the introduction of lower-cost generic clopidogrel may increase patient compliance. However, platelet inhibition by ge..
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Case Report
Coronary Artery Intervention after Cytostatics Treatment in Unstable Angina Patient with Essential Thrombocythemia. A Case Report and Literature Review
Hyun Chang, Chi Young Shim, June-Won Cheong, Ju-Yeon Pyo, Young Guk Ko, Donghoon Choi, Yangsoo Jang
Korean J Intern Med. 2006;21(2):146-149. Published online June 30, 2006
Essential thrombocythemia (ET) is a clonal disorder of myeloid stem cells that causes thrombocytosis. As a result, ET can lead to vascular thrombosis and tissue ischemia; the association of coronary artery abnormalities such as myocardial infarction or unstable angina is rare. Here we describe a ..
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