1.Prognostic Implication of Platelet Reactivity According to Left Ventricular Systolic Dysfunction Status in Patients Treated With Drug-Eluting Stent Implantation:Analysis of the PTRG-DES Consortium
Donghoon HAN ; Sun-Hwa KIM ; Dong Geum SHIN ; Min-Kyung KANG ; Seonghoon CHOI ; Namho LEE ; Byeong-Keuk KIM ; Hyung Joon JOO ; Kiyuk CHANG ; Yongwhi PARK ; Young Bin SONG ; Sung Gyun AHN ; Jung-Won SUH ; Sang Yeub LEE ; Ae-Young HER ; Young-Hoon JEONG ; Hyo-Soo KIM ; Moo Hyun KIM ; Do-Sun LIM ; Eun-Seok SHIN ; Jung Rae CHO ; For the PTRG Investigator
Journal of Korean Medical Science 2024;39(3):e27-
Background:
Coronary artery disease patients undergoing percutaneous coronary intervention (PCI) often exhibit reduced left ventricular ejection fraction (LVEF). However, the impact of LV dysfunction status in conjunction with platelet reactivity on clinical outcomes has not been previously investigated.
Methods:
From the multicenter PTRG-DES (Platelet function and genoType-Related long-term prognosis in DES-treated patients) consortium, the patients were classified as preserved-EF (PEF: LVEF ≥ 50%) and reduced-EF (REF: LVEF< 5 0%) group by echocardiography. Platelet reactivity was measured using VerifyNow P2Y 12 assay and high platelet reactivity (HPR) was defined as PRU ≥ 252. The major adverse cardiac and cerebrovascular events (MACCEs) were a composite of death, myocardial infarction, stent thrombosis and stroke at 5 years after PCI. Major bleeding was defined as Bleeding Academic Research Consortium bleeding types 3–5.
Results:
A total of 13,160 patients from PTRG-DES, 9,319 (79.6%) patients with the results of both PRU and LVEF were analyzed. The incidence of MACCE and major bleeding was higher in REF group as compared with PEF group (MACCEs: hazard ratio [HR] 2.17, P < 0.001, 95% confidence interval [CI] 1.85–2.55; major bleeding: HR 1.78, P < 0.001, 95% CI 1.39–2.78).The highest rate of MACCEs was found in patients with REF and HPR, and the difference between the groups was statistically significant (HR 3.14 in REF(+)/HPR(+) vs. PEF(+)/HPR(-) group,P <0.01, 95% CI 2.51–3.91). The frequency of major bleeding was not associated with the HPR in either group.
Conclusion
LV dysfunction was associated with an increased incidence of MACCEs and major bleeding in patients who underwent PCI. The HPR status further exhibited significant increase of MACCEs in patients with LV dysfunction in a large, real-world registry.Trial Registration: ClinicalTrials.gov Identifier: NCT04734028
2.Clinical and Lifestyle Determinants of Continuous Glucose Monitoring Metrics in Insulin-Treated Patients with Type 2 Diabetes Mellitus
Da Young LEE ; Namho KIM ; Inha JUNG ; So Young PARK ; Ji Hee YU ; Ji A SEO ; Jihee KIM ; Kyeong Jin KIM ; Nam Hoon KIM ; Hye Jin YOO ; Sin Gon KIM ; Kyung Mook CHOI ; Sei Hyun BAIK ; Sung-Min PARK ; Nan Hee KIM
Diabetes & Metabolism Journal 2023;47(6):826-836
Background:
There was limited evidence to evaluate the association between lifestyle habits and continuous glucose monitoring (CGM) metrics. Thus, we aimed to depict the behavioral and metabolic determinants of CGM metrics in insulin-treated patients with type 2 diabetes mellitus (T2DM).
Methods:
This is a prospective observational study. We analyzed data from 122 insulin-treated patients with T2DM. Participants wore Dexcom G6 and Fitbit, and diet information was identified for 10 days. Multivariate-adjusted logistic regression analysis was performed for the simultaneous achievement of CGM-based targets, defined by the percentage of time in terms of hyper, hypoglycemia and glycemic variability (GV). Intake of macronutrients and fiber, step counts, sleep, postprandial C-peptide-to-glucose ratio (PCGR), information about glucose lowering medications and metabolic factors were added to the analyses. Additionally, we evaluated the impact of the distribution of energy and macronutrient during a day, and snack consumption on CGM metrics.
Results:
Logistic regression analysis revealed that female, participants with high PCGR, low glycosylated hemoglobin (HbA1c) and daytime step count had a higher probability of achieving all targets based on CGM (odds ratios [95% confidence intervals] which were 0.24 [0.09 to 0.65], 1.34 [1.03 to 1.25], 0.95 [0.9 to 0.99], and 1.15 [1.03 to 1.29], respectively). And participants who ate snacks showed a shorter period of hyperglycemia and less GV compared to those without.
Conclusion
We confirmed that residual insulin secretion, daytime step count, HbA1c, and women were the most relevant determinants of adequate glycemic control in insulin-treated patients with T2DM. In addition, individuals with snack consumption were exposed to lower times of hyperglycemia and GV.
3.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
The Korean Journal of Internal Medicine 2021;36(Suppl 1):S80-S89
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 retrospectively identified 331 patients who underwent percutaneous coronary intervention (PCI) and assessed the on-clopidogrel PR using VerifyNow P2Y12 assay at 1 year in a single center. Two hundred eleven patients were on DAPT for > 1 year. The relationship between high on-treatment platelet reactivity (HPR) at 1 year and clinical outcomes beyond 1 year, as well as the longitudinal change in PR was analyzed.
Results:
At 1 year, 135 (64%) patients showed HPR and 76 (36%) did not. There was a significant increase in ischemic endpoint events, including cardiovascular death, non-fatal myocardial infarction, and stroke/transient ischemic attack in patients with compared to without HPR at 1 year (hazard ratio [HR], 2.68; 95% confidence interval [CI], 1.06 to 6.77; p = 0.036). However, the incidence of any Bleeding Academic Research Consortium bleeding was significantly lower in the HPR group (HR, 0.11; 95% CI, 0.02 to 0.65; p = 0.015). In the longitudinal analysis, PR significantly decreased from post-load to 1 year after index PCI in the non-HPR group. Conversely, the HPR group showed high PR from baseline through 1 year.
Conclusions
HPR at 1 year may be a useful surrogate for predicting ischemic and bleeding events in patients on prolonged DAPT. Patients with and without HPR at 1 year showed different patterns of longitudinal change in PR.
4.Sarpogrelate Based Triple Antiplatelet Therapy Improved Left Ventricular Systolic Function in Acute Myocardial Infarction: Retrospective Study.
Jae Hyuk CHOI ; Jung Rae CHO ; Sang Min PARK ; Kunal Bikram SHAHA ; Floyd PIERRES ; Tserendavaa SUMIYA ; Kwang Jin CHUN ; Min Kyung KANG ; Seonghoon CHOI ; Namho LEE
Yonsei Medical Journal 2017;58(5):959-967
PURPOSE: The purpose of this study was to assess the potential benefit of a 5-hydroxytryptamine receptor antagonist, sarpogrelate-based triple antiplatelet therapy (TAPT) in comparison with dual antiplatelet therapy (DAPT) in patients undergoing primary percutaneous coronary intervention (PCI) for ST-elevation myocardial infarction (STEMI). MATERIALS AND METHODS: 119 patients of STEMI were retrospectively assessed. All patients received aspirin and clopidogrel per standard of care. Among them, 53 patients received an additional loading dose of sarpogrelate and a maintenance dose for 6 months post-PCI (TAPT group), while others did not (DAPT group). RESULTS: The rates of complete ST-segment resolution at 30 minutes post-PCI and post-procedural thrombolysis in myocardial infarction flow were not significantly different between the two groups (52.8% vs. 48.5%, p=0.200; 92.5% vs. 89.4%, p=0.080). In addition, no significant differences were observed between the two groups with regard to 30-day and 12-month clinical outcomes (cardiac death, myocardial infarction, stent thrombosis, target vessel revascularization, and severe bleeding). Meanwhile, improvement in left ventricular (LV) systolic function was observed in the TAPT group [ΔLV ejection fraction (LVEF)=17.1±9.4%, p<0.001; Δglobal longitudinal strain (GLS)=−9.4±4.2% , p<0.001] at 6 months, whereas it was not in the DAPT group (ΔLVEF= 8.8±6.5%, p=0.090; ΔGLS=−4.6±3.4%, p=0.106). In multivariate analyses, TAPT was an independent predictor for LV functional recovery (odds ratio, 2.61; 95% confidence interval, 1.16–5.87; p=0.003). CONCLUSION: Sarpogrelate-based TAPT improved LV systolic function at 6 months in STEMI patients undergoing primary PCI.
Aspirin
;
Humans
;
Multivariate Analysis
;
Myocardial Infarction*
;
Percutaneous Coronary Intervention
;
Retrospective Studies*
;
Serotonin
;
Standard of Care
;
Stents
;
Thrombosis
;
Ventricular Function, Left
5.The clinical features and infectious etiologies of acute diarrhea in immunocompromised hosts.
Jin Young LEE ; Ye Na KIM ; Namho KIM ; Kyoung Soon CHO ; Ji Young PARK
Kosin Medical Journal 2017;32(2):191-203
OBJECTIVES: The acute diarrhea is a common complaint among immunocompromised hosts, and may cause life threatening event. The infectious etiologies vary depending on virus, bacteria, and parasites. The most common etiology of acute gastroenteritis is known as enteric virus in Korea. But there are few studies about the infectious etiology of acute gastroenteritis in immunocompromised hosts. The aim of this study was to investigate the infectious etiologies of acute diarrhea in immunocompromised hosts. METHODS: Seventy three patients were enrolled prospectively in a university hospital from January 2013 to July 2014. Immunocompromised hosts included above 65-year-old people, patients with chronic diseases, solid organ or stem cell transplants, solid organ malignancies, hematologic malignancies, immunosuppressive or steroid taking patients. The clinical data were collected and stool samples collected during diarrhea were undergone laboratory analysis for enteric viruses and bacterial enteropathogens including Salmonella spp., Shigella spp., and Clostridium difficile. RESULTS: Fifty five patients were analyzed as follows : above 65 year-old people were 36 cases (66%), previous antibiotic usage was 22 cases (41.5%). 44 cases (81.1%) were admitted to general ward whereas 9 cases to ICU (17%). 41 cases (73.6%) were treated with antibiotics. Positive C. difficile toxin assays were 6 cases (11.9%). Other infectious etiologies were not found. CONCLUSIONS: C. difficile infection was more common infectious etiology while enteric viruses and other bacteria are not associated with acute diarrhea among immunocompromised hosts in this study. So C. difficile infection must be considered preferentially in immunocompromised hosts with acute diarrhea.
Aged
;
Anti-Bacterial Agents
;
Bacteria
;
Chronic Disease
;
Clostridium difficile
;
Diarrhea*
;
Gastroenteritis
;
Hematologic Neoplasms
;
Humans
;
Immunocompromised Host*
;
Korea
;
Parasites
;
Patients' Rooms
;
Prospective Studies
;
Salmonella
;
Shigella
;
Stem Cells
6.Successfully Treated Acute Fulminant Myocarditis Induced by Ulcerative Colitis with Extracorporeal Life Support and Infliximab.
Han Kyul KIM ; Kun Il KIM ; Sung Won JUNG ; Hee Sun MUN ; Jung Rae CHO ; Namho LEE ; Min Kyung KANG
Journal of Cardiovascular Ultrasound 2016;24(2):163-167
We report a case of successfully treated acute fulminant myocarditis induced by ulcerative colitis with extracorporeal life support and infliximab. Myocarditis is a rare but crucial complication during an exacerbation of inflammatory bowel disease. In our case, we applied extracorporeal membrane oxygenation (ECMO) for cardiac rest under impression of acute myocarditis associated with ulcerative colitis, and added infliximab for uncontrolled inflammation by corticosteroid. As a result, our patient was completely recovered with successful weaning of ECMO.
Colitis, Ulcerative*
;
Extracorporeal Membrane Oxygenation
;
Humans
;
Inflammation
;
Inflammatory Bowel Diseases
;
Infliximab*
;
Myocarditis*
;
Ulcer*
;
Weaning
7.Biventricular Takotsubo Cardiomyopathy Associated with Epilepsy.
Namho KOO ; Byung Woo YOON ; Yonggeon SONG ; Chang Kyun LEE ; Tae Yeon LEE ; Ji Yeon HONG
Journal of Cardiovascular Ultrasound 2015;23(4):262-265
We describe a case of Takotsubo cardiomyopathy in an elderly woman after status epilepticus. In an emergency echocardiography, not only left ventricular apical ballooning but also right ventricular apical hypokinesia was observed. After a medical management, the patient's condition was improved and a follow-up echocardiography showed substantial recovery of left and right ventricular apical ballooning.
Aged
;
Echocardiography
;
Emergencies
;
Epilepsy*
;
Female
;
Follow-Up Studies
;
Humans
;
Hypokinesia
;
Status Epilepticus
;
Takotsubo Cardiomyopathy*
8.Clinical impact of routine follow-up coronary angiography after second- or third-generation drug-eluting stent insertion in clinically stable patients.
Seonghoon CHOI ; Hee Sun MUN ; Min Kyung KANG ; Jung Rae CHO ; Seong Woo HAN ; Namho LEE
The Korean Journal of Internal Medicine 2015;30(1):49-55
BACKGROUND/AIMS: In the bare-metal stent era, routine follow-up coronary angiography (RFU CAG) was used to ensure stent patency. With the advent of drug-eluting stents (DESs) with better safety and efficacy profiles, RFU CAG has been performed less often. There are few data on the clinical impact of RFU CAG after second- or third-generation DES implantation in clinically stable patients with coronary artery disease; the aim of this study was to examine this issue. METHODS: We analyzed clinical outcomes retrospectively of 259 patients who were event-free at 12-month after stent implantation and did not undergo RFU CAG (clinical follow-up group) and 364 patients who were event-free prior to RFU CAG (angiographic follow-up group). Baseline characteristics were compared between the groups. RESULTS: The Kaplan-Meier estimated total survival and major adverse cardiac event (MACE)-free survival did not differ between the groups (p = 0.100 and p = 0.461, respectively). The cumulative MACE rate was also not different between the groups (hazard ratio, 0.85; 95% confidence interval, 0.35 to 2.02). In the angiographic follow-up group, 8.8% revascularization was seen at RFU CAG. CONCLUSIONS: RFU CAG did not affect long-term clinical outcome after second- or third-generation DES implantation in clinically stable patients.
Aged
;
*Coronary Angiography
;
Coronary Artery Bypass
;
Coronary Artery Disease/radiography/*therapy
;
Coronary Restenosis/etiology/radiography/surgery
;
Coronary Vessels/*radiography
;
Disease Progression
;
Disease-Free Survival
;
*Drug-Eluting Stents
;
Female
;
Humans
;
Kaplan-Meier Estimate
;
Male
;
Middle Aged
;
Myocardial Infarction/etiology/radiography/surgery
;
Patient Selection
;
Percutaneous Coronary Intervention/adverse effects/*instrumentation
;
Predictive Value of Tests
;
Proportional Hazards Models
;
Prosthesis Design
;
Retrospective Studies
;
Risk Factors
;
Time Factors
;
Treatment Outcome
9.A Case of Upper Extremity Deep Vein Thrombosis and Pulmonary Thromboembolism in a Severely Obese Man.
Hyun Yon JUNG ; Arum HAN ; Hee Jun KIM ; Jae Hyun PARK ; Sun Woo KIM ; Hee Jun KIM ; Namho LEE
Korean Journal of Medicine 2014;86(4):478-483
Deep vein thrombosis is a predisposing condition for pulmonary embolism, which can be fatal. Usually, deep vein thrombosis is found in the lower extremities, but it can also occur in the upper extremities. The prevalence of upper extremity deep vein thrombosis appears to be increasing, particularly due to the increased use of indwelling central venous catheters. Pulmonary embolism is present in up to one-third of patients with upper extremity deep vein thrombosis. Upper extremity deep vein thrombosis is an increasingly important clinical entity, with the potential for considerable morbidity. Here, we report a case of upper extremity deep vein thrombosis and pulmonary embolism in a severely obese man who was successfully treated with anticoagulants.
Anticoagulants
;
Central Venous Catheters
;
Humans
;
Lower Extremity
;
Prevalence
;
Pulmonary Embolism*
;
Thoracic Outlet Syndrome
;
Upper Extremity Deep Vein Thrombosis*
;
Upper Extremity*
;
Venous Thrombosis
10.Spontaneous Spinal Epidural Hematoma Caused by Dual Antiplatelet Agent Therapy after Percutaneous Coronary Intervention.
Sun Woo KIM ; Hana YOO ; Young Jin SONG ; Dong Hee HAN ; Ji Hyun KIM ; Eun Jeong CHOI ; Namho LEE
Korean Journal of Medicine 2013;84(5):718-722
Spontaneous spinal epidural hematomas (SSEH) are rare, accounting for less than 1% of all spinal epidural lesions. The potential causes include coagulopathies, antithrombotic drugs, hypertension, increased venous pressure, and vascular malformations. A SSEH causes severe neurological deficits unless treated in a timely manner. As the number of patients who are diagnosed with ischemic heart disease and treated using percutaneous coronary intervention (PCI) increases, the prescription of dual antiplatelet agents is also increasing. We report a case of SSEH caused by dual antiplatelet agent therapy in a patient who had undergone PCI.
Accounting
;
Aspirin
;
Hematoma, Epidural, Spinal
;
Humans
;
Hypertension
;
Myocardial Ischemia
;
Percutaneous Coronary Intervention
;
Platelet Aggregation Inhibitors
;
Prescriptions
;
Ticlopidine
;
Vascular Malformations
;
Venous Pressure

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