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김민규(Min Kyu Kim),송재관(Jae Kwan Song),강덕현(Duk Hyun Kang),이재환(Jae Hwan Lee),조윤행(Yoon Haeng Cho),박경하(Kyoung Ha Park),고관호(Kwan Ho Ko),윤영진(Young Jin Yoon),김재중(Jae Joong Kim),박성욱(Seong Wook Park),박승정(Seung J 대한내과학회 2000 대한내과학회지 Vol.58 No.1
N/A Background : We sought to analyze the recent trends and clinical outcomes of infective endocarditis in Korea using newly proposed diagnostic criteria, Duke criteria, for this potentially life-threatening disease. Methods : Retrospective analysis of medical records including echocardiographic data, blood culture and operation records was done for 156 patients (male 103) with clinical diagnosis of infective endocarditis at Asan Medical Center from 1989 to January 1998. Results : One hundred eighteen patients (75%) fulfilled the criteria for definite group (Group I) in Duke criteria, whereas 38 patients (25%) for possible group (Group II). Mean age was 48±16 years. Although valvular heart disease was the most common underlying heart disease (49/156, 31%), in more than half (84/156, 54%) infective endocarditis was the first clinical presentation without previous medical history of any cardiac disease. Surgical intervention was required in 69 patients (44%), and the frequency of surgery during hospital course did not show any difference in Group I versus Group II (44% vs. 45%). Overall mortality was 17%, and did not show any difference in Group I versus Group II. Surgical mortality was 12% (8/69), which was not significantly different form mortality with medical treatment (21%, 18/87). Among 98 survivors in Group I, 84 patients (86%) were followed for average 34±24 months (0.5∼98 months). Five-year survival and event-free survival rate were 85±7 % and 57±8 % respectively. Conclusion : Recently the mean age of patients with infective endocarditis increased dramatically, and infective endocarditis could be an initial clinical presentation without any previous medical history of cardiac disease in many patients. Surgical intervention was needed in considerable numbers of patients and infective endocarditis still shows relatively high mortality. There were no significant different clinical features in Group I and II.(Korean J Med 58:28-38, 2000)
스마트 센서의 전기저항특성을 이용한 스마트 콘크리트의 개발
김화중(Kim Wha-Jung),김이성(Kim Ie-Sung),고관호(Ko Kwan-Ho) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
The complexity of the damage signal measurement is occurred to a problem in the application of the smart material and structure to practical construction. Accordingly, the development of self-diagnosis concrete using an electric fuse was conceived for a simply method of damage detection. An electric fuse protects a circuit against over-current, which is the body of electric resistance itself. The damage of elements can be predicted from the resistance of electric wire within the fuse by measuring resistance due to the fracture of the external glass tube caused by cracks in the concrete specimen. Therefore, the self-diagnosis system can be used in such a way that the extinguished LED will predict the damage when the electric wire is torn due to the broken glass tube fuse.
프로야구 스마트폰 어플리케이션 품질 특성 요인에 따른 고객만족도가 재이용의도에 미치는 영향
정명수(Jung, Myeong-Su),김기탁(Kim, Gi-Tak),고관호(Ko, Kwan-Ho) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.6
The purpose of this study is to examine the professional baseball smartphone application users to investigate the relationships between quality characteristic factors of the application, customer satisfaction, and continuous use of the application. The survey was carried out on users who visited metropolitan city baseball stadiums and had experience using professional baseball smartphone application. Out of the 400 questionnaires were distributed to viewing spectators, 365 were collected and finally analyzed as completes. The results were analyzed using frequency analysis, factor analysis, reliability analysis, and correlation analysis using SPSS Win Ver. 18.0. Through Amos 18, confirmatory factor analysis and structural equation modeling were conducted. The results of the study are as follows. First, among the sub factors such as contents, design, usability, and promotion of the smartphone application, the contents, design, and usability plays an important for customer satisfaction. Second, among the sub factors such as contents, design, usability, and promotion of the smartphone application, the contents, design, and promotion plays an important for application reuse. Third, the customer satisfaction of the application plays important role in the continuous use of application.
김준,신정현,윤영진,김은경,김종철,김명환,장우영,민영일,손정민,고관호,박경하,정선미,유은실 대한소화기내시경학회 2001 Clinical Endoscopy Vol.22 No.1
Villous adenoma of the extrahepatic duct is a rare disease, Even though it is benign, it has malignant potential and is considered a premalignant lesion. We here report one case of villous adenoma with foci of adenocarcinoma arising in the common hepatic duct. A 60-year-old male was admitted to our hospital because of epigastric pain. The cholangiogram revealed a large filling defect in the right intrahepatic and common hepatic duct with intrahepatic bile duct dilatation, The patient underwent right lobectomy. Grossly, stalked papillay tumor originated in the common hepatic duct was overriding the right intrahepatic duct. Microscopically, the tumor was composed of stratified tall columnar cells with various dysplasia and there were foci of invasive adenocarcinoma.
체외충격파 쇄석술이 유효했던 췌관결석과 췌관협착을 동반한 분할 췌 1예
김준,김현영,김명환,서동완,이성구,이승환,민영일,송희곤,주연호,한상택,고관호,박경하 대한소화기내시경학회 2000 Clinical Endoscopy Vol.21 No.1
A 40-year-old man was presented with recurrent abdominal pain. An ERCP (Endoscopic RETROGRADE Cho-langiopancreatography) revealed complete pancreas divisum and pancreatic duct stricture with a stone. Initially, endoscopic stone removal through the minor papilla origice was unsuccessful due to an impacted pancreatic stone associated with a dominant stricture at the dorsal pancreatic duct. Extracorporeal shock wave lithotripsy (ESWL) was performed twice and the impacted pancreatic stone was fragmented. After ESWL, endoscopic stone removal became possible and pancreatic stenting was performed for the correction of the dorsal duct stricture. This case in herein reported in which ESWL was successful in treating an impacted dorsal pancreatic duct stone associated with pancreas divisum.