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Intercoronary communication found in the diagnostic process of the stress induced cardiomyopathy
( Ah Lon Jung ),( Semi Kim ),( Sung Soo Kim ),( Dong Goo Kang ),( Seung Uk Lee ),( Sang Ki Cho ) 대한내과학회 2015 대한내과학회 추계학술대회 Vol.2015 No.1
A 76-year-old man with no known coronary artery disease presented to an outside hospital with cough, shortness of breath and low extremity edema. An initial resting electrocardiogram revealed Q-wave and ST segment elevation in leads V4-6 and Q-wave in leads II, III, and aVF. Chest X ray showed pulmonary congestion in both lung fields with cardiomegaly. Lab testing revealed troponin I of 0.36 ng/mL, troponin T of 0.165 ng/mL and pro-BNP of 2,749 pg/mL. Transthoracic echocardiography revealed apical akinesia with depressed left ventricular (LV) function, and an estimated ejection fraction of 39%. Emergent coronary angiography showed the posterolateral branch of the right coronary artery (RCA) communication with the distal left circumflex artery (LCx) without significant obstructive lesion in the left coronary arteries (LCA) and the RCA. Simultaneous bilateral coronary angiography showed bi-directional blood flow between distal RCA and LCx. The patient was maintained on a angiotensin receptor blocker, diuretics and aspirin by the suspicious stress induced cardiomyopathy. Follow up echocardiography revealed improved LV systolic function with apical wall motion after 1 month, and has remained symptom-free since.
Multi-view Clustering by Spectral Structure Fusion and Novel Low-rank Approximation
Yin Lon,Xiaobo Liu,Simon Murphy 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.3
In multi-view subspace clustering, how to integrate the complementary information between perspectives to construct a unified representation is a critical problem. In the existing works, the unified representation is usually constructed in the original data space. However, when the data representation in each view is very diverse, the unified representation derived directly in the original data domain may lead to a huge information loss. To address this issue, different to the existing works, inspired by the latest revelation that the data across all perspectives have a very similar or close spectral block structure, we try to construct the unified representation in the spectral embedding domain. In this way, the complementary information across all perspectives can be fused into a unified representation with little information loss, since the spectral block structure from all views shares high consistency. In addition, to capture the global structure of data on each view with high accuracy and robustness both, we propose a novel low-rank approximation via the tight lower bound on the rank function. Finally, experimental results prove that, the proposed method has the effectiveness and robustness at the same time, compared with the state-of-art approaches.
Ah Lon Jung,Sang Wook Park,Gun Young Hong,Hyeong Chul Moon,Seo Joon Eun 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.1
Most cases of gastric subepithelial lesions follow a good clinical course; however, some lesions progress to malignant tumors,and treatment of tumors with a high risk of malignancy is essential. Surgical excision has been the primary treatment for tumorsoriginating from the propria muscle layer, but it has the disadvantages of being invasive and causing postoperative functionalabnormalities. With the development of endoscopic techniques and instruments, the role of endoscopic resection, which is a lessinvasive method for the removal of gastric subepithelial lesions, has been attracting attention. We performed an endoscopic fullthicknessresection for 8 patients with gastric subepithelial lesions originating from the muscularis propria. No fatal complicationsoccurred. Our findings suggest the need to develop various devices for resection and closure and to accumulate further experiencethrough additional studies to prevent complications and specimen loss.
Trade Openness and Economic Growth: Evidence in East Asia and Latin America
( Been Lon Chen ) 세종대학교 경제통합연구소(구 세종대학교 국제경제연구소) 1999 Journal of Economic Integration Vol.14 No.2
The past two decades have witnessed economic growth differentials among countries in East Asia and Latin America. In this paper we argue that the degree of openness due to government policies in both areas may be an important factor yielding this result. We construct a simple model to highlight a positive association between trade openness and economic growth, and then use a sample of thirty-four countries in the area to test the relationship, after controlling for other common variables of economic growth. As there is no universal harmonious measure of openness, we use an array of five measures, including quantitative, price and qualitative measures. The empirical results are supportive of our conjecture, both in significance and in magnitude. (JEL classification: Fl, 01, 04, 057.)
Trade Openness and Economic Growth : Evidence in East Asia and Latin America
Chen, Been-Lon 세종대학교 국제경제연구소 1999 Journal of Economic Integration Vol.14 No.2
The past two decades have witnessed economic growth differentials among countries in East Asia and Latin America. In this paper we argue that the degree of openness due to government policies in both areas may be an important factor yielding this result. We construct a simple model to highlight a positive association between trade openness and economic growth, and then use a sample of thirty-four countries in the area to test the relationship, after controlling for other common variables of economic growth. As there is no universal harmonious measure of openness, we use and array of five measures, including quantitative, price and qualitative measures. The empirical results are supportive of our conjecture, both in significance and in magnitude.(JEL Classification: F1, O1, O4, O57)
Tam Hon Lon,Wong Eliza Mi Ling,Cheung Kin 한국간호과학회 2023 Asian Nursing Research Vol.17 No.3
Purpose Controlling blood pressure minimizes the risk of cardiovascular events among patients with hypertension. Despite regular follow-ups, the hypertension management for patients aged ≥45 years is limited as evidenced from a decreased control rate. This pilot study aimed to test a theory-guided educational program for community-dwelling patients with hypertension. Methods Sixty-nine patients with hypertension aged ≥45 years and having high blood pressure (>130/80 mmHg) were recruited in this two-arm pilot randomized controlled trial. Participants in the intervention group underwent a program guided by the Health Promotion Model, whereas those in the control group received usual care. Data were collected at baseline, week 8, and week 12 and used to assess the blood pressure, pulse pressure, self-efficacy, and adherence to hypertension management. Data were analyzed using a generalized estimating equation based on the intention-to-treat principle. Process evaluation was conducted to assess the feasibility and acceptability of the educational program. Results The results obtained using the generalized estimating equation revealed that the educational program led to reduction in the systolic blood pressure (β = −7.12, p = .086) and pulse pressure (β = −8.20, p = .007) and to improve self-efficacy (β = 2.61, p = .269) at week 12. The program had a small-to-moderate effect on the reduction of systolic blood pressure (effect size = −0.45) and pulse pressure (effect size = −0.66) and self-efficacy (effect size = 0.23). The participants were highly satisfied with the educational program. Conclusions The educational program was found to be feasible and acceptable and may be incorporated into current hypertension management practices at the community level. Trial registration ClinicalTrials.gov with identifier: NCT04565548.
Primary signet ring cell carcinoma of the gallbladder: a case report
( Seo Joon Eun ),( Ah Lon Jung ),( Se Mi Kim ),( Moo Woong Kim ),( Ui Sin Lee ),( Su Sie Rah ),( Geum Soo Lee ),( Hyeung Chul Moon ),( Sang Wook Park ),( Gun Young Hong ) 대한내과학회 2015 대한내과학회 추계학술대회 Vol.2015 No.1
Carcinoma of the gallbladder is the most common biliary tract tumor. Signet ring cell carcinoma of the gallbladder is a rare form of mucinous adenocarcinoma and has a worse prognosis. Since very few cases have been reported, information regarding the behavior and prognosis of gallbladder signet ring cell carcinoma is limited. Only eight cases of signet ring cell carcinoma of the gallbladder have been reported so far. Four cases of these had lymph node metastasis and died within 3 months. The other cases had no information of outcome. We present a rare case of primary signet ring cell carcinoma of the gallbladder. A 58-year-old male presented to our hospital with complaints of epigastric pain. Abdominal computed tomography showed multiple gallbladder stones with diffuse wall thickening, cystic duct enhacement and CBD stone. Removing CBD stone through ERCP, laparoscopic cholecystectomy was performed. The histopathologic finding revealed that diffusely growing adenocarcinoma of signet ring cell type was noted in the surface epithelium with intracellular mucin (Fig. 1). The immunohistochemical stain for cytokeratin was positive for tumor cells (Fig. 2). The final pathologic result was signet ring cell carcinoma of the gallbladder. There was no metastasis in the retroperitoneum and mesenteric lymph node. The tumor was stage IIIA (according to TNM staging). As Esophagogastroduodenoscopic finding showed no evidence of malignancy. He is planning to perform extended radical cholecystectomy and post-operative chemotherapy.