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홍경순 대한영상의학회 1990 대한영상의학회지 Vol.26 No.2
Recurrent pyogenic choliangitis is a disease occurring in oriental persons characterized by intrahepatic pigment stone formation with recurrent exacerbation and remissions of abdominal pain associated with jaundice, chills and fever. Authors retrospectively analysed endoscopic retrograde cholangiograms in 53 patients with recurrent pyogenic cholangitis, diagnosed by surgery(n-33) or on the clinical basis9n=200. Cholangiographic findings of recurrent pyogenic cholangitis were disproportionately severe dilation of the extrahepatic ducts with mild or no dilatation of the intrahepatic ducts, filling defect by a stone or stones(n=45), straightening and rigidity of the intrahepatic ducts(n=33), increased or right angle bile duct branching pattern(n=31), decrease in arborization(n=14). I 47 cases of recurrent pyogenic cholangitis with stone, stones were in the extrahepatic ducts in 27 cases, intrahepatic ducts in 5 cases, and both intra-and extrahepatic ducts in 15 cases. In 6 cases, there were no stones in the bile ducts; in these cases, characterisic cholangigraphic findings enabled us to diagnose recurrent pyogenic cholangitis. , endoscopic retrograde cholangiogram is the modality of choice in diagnosing recurrent pyogenic cholangitis, especially in the absence fo stones o ultrasound examination.
홍경순,박규태,안재목 대한의료정보학회 2015 Healthcare Informatics Research Vol.21 No.1
Objectives: Recent studies have emphasized the potential information embedded in peripheral fingertip photoplethysmogram(PPG) signals for the assessment of arterial wall stiffening during aging. For the discrimination of arterial stiffness withage, the brachial-ankle pulse wave velocity (baPWV) has been widely used in clinical applications. The second derivative ofthe PPG (acceleration photoplethysmogram [APG]) has been reported to correlate with the presence of atherosclerotic disorders. In this study, we investigated the association among age, the baPWV, and the APG and found a new aging index reflectingarterial stiffness for a healthcare device. Methods: The APG and the baPWV were simultaneously applied to assess theaccuracy of the APG in measuring arterial stiffness in association with age. A preamplifier and motion artifact removal algorithmwere newly developed to obtain a high quality PPG signal. In total, 168 subjects with a mean ± SD age of 58.1 ± 12.6years were followed for two months to obtain a set of complete data using baPWV and APG analysis. Results: The baPWVand the B ratio of the APG indices were correlated significantly with age (r = 0.6685, p < 0.0001 and r = –0.4025, p < 0.0001,respectively). A regression analysis revealed that the c and d peaks were independent of age (r = –0.3553, p < 0.0001 and r =–0.3191, p < 0.0001, respectively). Conclusions: We determined the B ratio, which represents an improved aging index andsuggest that the APG may provide qualitatively similar information for arterial stiffness.
유비쿼터스시대의 장애인 정보통신 접근성 제고에 관한 연구
홍경순,민홍기 한국장애인재활협회 2011 재활복지 Vol.15 No.1
본 연구에서 신체적 장애로 이동과 의사소통이 어려운 장애인을 위하여 접근성 기능이 적용된 유비쿼터스 컴퓨팅 기술의 국내외 정책 및 기술동향을 분석하고, 정보통신 접근성 제공 방안을 제시한다. 정책동향에서는 일본 및 미국, 유럽에서 유비쿼터스 기술 적용 시 장애인을 위한 기술을 적용 하기 위해서 정책을 수립해서 추진하는지에 대한 소개와 우리나라에서 추진하는 유비쿼터스 관 련 정책에 대하여 소개하였다. 또한, 정책에 의해 선진국 및 국내에서 에서 추진하고 있는 기술개 발 및 시범사업에 대한 조사를 통해 유비쿼터스의 컴퓨팅 환경에서 장애인과 고령자에 대한 정보 통신 접근성 제고 방안을 제시하였다. 연구결과 장애인을 위한 정보통신 접근성 제고 방안은 첫째, 장애인도 소비자로 생각하고, 둘 째, 기획단계부터 접근성을 고려해야 하며, 셋째, 장애인을 위한 기술개발 지원체계가 필요하며, 넷째, 기업의 제품개발에 장애인 사용자의 참여가 필요하다. In this study, domestic and foreign policy and technology trends of ubiquitous computing with accessibility function are analyzed for the disabled people who have difficulties in mobility and telecommunication because of their physical disabilities. Also a plan to provide accessibility to information and telecommunication for those people is suggested. It is introduced in policy trends that the process of policy establishment for applying the ubiquitous computing technology to the disabled people in Japan, the United States and Europe. Additionally the policy about ubiquitous technologies for those people in Korea is described. An enhanced plan for a better accessibility to information and telecommunication for those who are the disabled and the elderly under ubiquitous computing environment is suggested through the investigation on technological development and demonstration projects in progress by the policy in some developed countries and Korea. After an intensive study show that the enhanced plan for a better accessibility of information and telecommunication for the disabled people requires: first, to consider the disabled as a consumer, second, to take account of accessibility in the stage of planning, third, to have an assistive system to technology development for the disabled, and fourth, to participate the disabled users in product development of companies.
홍경순 대한심장학회 2008 Korean Circulation Journal Vol.38 No.1
The Seventh Report of the Joint National Committee (JNC-7) introduced a new term "prehypertension" and it broadened the range of prehypertension to 120-139/80-89 mmHg. It is estimated that 31% of the US population and 29% of the Korean population have prehypertension. This condition is very prevalent and it's associated with other cardiovascular risk factors, especially obesity and diabetes. These people are at high risk for developing hypertension and subsequent cardiovascular events. Therefore, prehypertension has become a major public health concern, but the treatment standards have not yet been established. The JNC-7 report has recommended healthy lifestyles for all the people with prehypertension and it especially advocated drug treatment for the group of people with diabetes or chronic renal disease. This article reviews the prevalence of prehypertension, the risk and rate of progression to hypertension, the associated cardiovascular disease, the adverse cardiovascular events and the current status of treatment. (Korean Circ J 2008;38:1-6)