관상동맥 시술 도중 발생한 좌주간부 관상동맥 박리에 대한 스텐트 삽입 치료의 단장기 임상 결과 : acute and long-term results

이세환,이승환,홍명기,김영학,이철환,한기훈,송종민,강덕현,송재관,김재중,박성욱,박승정 대한내과학회 2004 대한내과학회지 Vol.66 No.6

목적 : 심도자 사용 시술과 관련된 좌주간부 관상동맥박리에 대한 적절한 치료는 아직 확실히 정립되지 않은 상태이다. 이에 본 연구는 좌주간부 관상동맥 박리에 대한 스텐트 삽입술의 단장기 임상결과를 후향적으로 분석하였다. 방법 : 좌주간부 관상동맥 박리에 대한 치료로 즉각적인 스텐트 삽입술을 시행하는 것이 안전하고 효과적인 방법임을 가설하였고, 이러한 즉각적인 스텐트 삽입을 시행한 10명의 환자를 대상으로 단장기적 임상경과를 의무기록 고찰과 전화 면담을 통해서 평가하였다. 결과 : 전체 환자 모두 처음부터 좌주간부 관상동맥에 유의한 협착을 가진 환자는 없었으며, 8명의 환자는 심도자의 조작으로 인한 박리가 발생한 경우였고(진단적 혈관 조영술 중에 3명, 유도 도자 조작 중에 5명), 나머지 2명은 다른 병변에 스텐트 삽입시술을 하는 중에 박리가 발생하였다. 이 10명의 환자에서 모두 즉각적인 스텐트 삽입술이 시행되었고, 4명의 환자에서 시술 도중 혈압 저하로 Intra-aortic Ballon Pump (IABP)를 장착하였다. 모든 환자에서 성공적으로 스텐트가 삽입되었고, 병원내 사망은 1명도 없었다. 6개월 추적 관상동맥 조영술은 8명의 환자에서 시행되었다. 혈관 조영상의 재협착(직경 협착 50% 이상)은 8명 모두에게서 관찰되지 않았으며, 퇴원 후 평균 31±25개월의 추적관찰 결과 주요 심장사건은 1건도 발생하지 않았다. 결론 : 비록 대상 환자가 적은 연구였지만 좌주간부 관상동맥 박리에 대한 스텐트 삽입술은 기술적으로 안전하고 빠르게 시행 할 수 있으며, 훌륭한 단장기적인 치료 효과를 보여준다. Background : The optimal treatment of patients with left main coronary artery (LMCA) dissection during catheter-based procedure remains uncertain. We retrospectively analyzed the acute and long-term results of bail-out stenting for LMCA dissection. Methods : In cases with significant LMCA dissection occurring during catheter-based procedure, prompt stent implantation may be safe and associated with favorable clinical outcome. We evaluated the acute and long-term results of bail-out stenting for LMCA dissection occurring during catheter-bases procedure in 1- patients. Results : Initially, there was significant stenosis of LMCA segment in these patients. Catheter-induced dissection occurred in 8 patients (during diagnostic angiography in 3 patients and guiding catheter manipulation in 5 patients). Two patients suffered dissection in the setting of stent deployment in other vessels. Therefore, bail-out stenting LMCA dissection was performed in a total of 10 patients. In 4 patients, hypotension developed and intra-aortic balloon pump was placed during procedure. Stents were successfully deployed in all patients. There was no in-hospital mortality. Six-month angiographic follow-up was performed in 8 patients. Angiographic restenosis(diameter stenosis 50%) was not observed in all patients at follow-up study. During a mean follow-up of 31±25 months after hospital discharge, there was no major adverse cardiac event (death, myocardial infarction, and target lesion revascularization). Conclusion : Bail-out LMCA stenting is technically feasible, and showed good acute and long-term results in a small series of patients.

급성 심근허혈에 의해 윤발된 승모판 폐쇄부전의 기전에 관한 실험적 연구

강덕현,송현,송재관,김현숙,이재환,임희영,이재원,박성욱,박승정,송명근 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.8

복합 관동맥병변에서의 Rotational Atherectomy : 초기결과

김진우,박성욱,홍명기,이상곤,이일수,이철환,최기준,강덕현,송재관,김재중,박승정 대한순환기학회 1997 Korean Circulation Journal Vol.27 No.9

열공형과 비열공형 피질하 혈관성 치매에서 위험인자의 차이에 관한 비교 연구

배희준,정지향,유경호,나덕렬,김상윤,최경규,양동원,손의주,이상도,김재우,박경원,김응규,이재홍,박미영,한일우,함동석,최문성,하충건,최성혜,이애영,이병철,한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.2

Backgrounds and Objectives: Vascular dementia is a group of dementing disoders arising from various stroke syndrome. Among these. subcortical ischemic vascular dementia (SIVD) is regarded as a relatively distinct clinical entity. However, MRI patterns of SIVD are not homogenous. In some patients, lacunes are dominant, and in others, subcortical white matter changes are. This study was designed to compare risk factor profiles between SIVD with and without multiple lacunes. Methods: We divided 47 subjects (22 males, mean age. 68 years) recruited from VADAPET (Multicenter Trial For Evaluation Of The Changes In the PET Images Of Subcortical Vascular Dementia Patient) study into two groups one with more than 5 lacunes in deep gray matter (lacune group) and the other with 5 or less(non-lacune group) Clinical characteristics and laboratory findings of two groups were compared. Results: Nineteen of 47 patients (40%) belonged to the lacune group. The lacune and non-lacune groups d d not differ in the following variables: age, hypertension, diabetes mellitus, hyperlipidemia heart disease, history of stroke or TIA, history of trauma or major surgery, family history of hypertension stroke, or dementia, age at diagnosis of dementia, body mass index, white blood cell count, ESR, CRP, fibrinogen, hemoglobin A1C, total cholesterol. LDL cholesterol creatinine, proteinuria, glucosuria, and microhematuria. However, male sex, smoking alcohol. hemoglobin, and HDL cholesterol were possibly associated more with lacune group SIVD than with non-lacune group (p<0 1) Multivariate analyses revealed that smoking, hemoglobin, and HDL cholesterol were independent predictors of SIVD with multiple lacunes Conclusion: Our study suggests that SIVD with multiple lacunes may be significantly different in smoking habits hemoglobin, and HDL cholesterol from SIVD without multiple lacunes.

치과용 콘빔CT영상에서 총의치 장착 후 하악과두의 위치변화

이봉호,김재덕,정재헌 대한구강악안면방사선학회 2008 Imaging Science in Dentistry Vol.38 No.1

Purpose : The aim of this study was to evaluate the change in the position of the mandibular condyle within articular fossa by a CBCT after wearing complete denture (CD). Materials and Methods : CBCT of 34 temporomandibular joints were taken from 9 male and 8 female patients with CB Mercuray (Hitachi, Japan) before and after wearing a CD for rehabilitation. Position of mandibular condyle within articular fossa at centric occlusion was evaluated with Vimplant2.0(CyberMed, Korea) on the central parasagittal view and curved panoramic coronal view of the condylar head. A statistical evaluation was done with SPSS. Results : The range of anteroposterior positional rate (AP) of condylar head within articular fossa was -16-5 and -10-12 respectively on the right and left sides. Before wearing CD, the AP rate showed discrepancy between right and left sides (p<0.05). After wearing CD, both condyles showed a tendency to decrease in posterior condylar position (right side; p<0.05). The average discrepancy between right and left side in mediolateral positional rate (MD) was 15.5 and 4.5 respectively before and after wearing CD. The improvement was observed in mediolateral relationship of both condylar heads after wearing CD (p<0.01). Before wearing CD, the average horizontal angle of long axis of condylar head was 79.6±2.7˚and 80.1±5.7˚ respectively on the right and left sides. After wearing CD, both condyles were rotated in the same direction in average on axial plane. Conclusion : We observed with CBCT the significant clinical evidence in case of positional change of mandibular condyle after wearing complete denture.

쇄석말뚝의 지지력에 관한 실험적 연구

이재덕,이상익,김병일,박용원 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

Crushed Stone Pile(CSP) is suitable for improving soft silts and clays and loose silty sands. The effects of this method are increasing bearing capacity and slope stability, reducing settlement, increasing the time-rate of consolidation, and reducing liquefaction potential. In this study several model tests are carried out to investigate the bearing capacity of CSP treated ground. The results show that bearing capacity increases with the area replacement ratio and the preconsolidation pressure of the ground.

都市周邊 農村地域의 人口移出現象 : 淸原郡 玉山面의 事例硏究 The Case Study of Oksan

李在德 西原大學校 1984 西原大學 論文集 Vol.13 No.-

In this paper, the writer attempted to identify the problems which came from rural outmigration and to consider the solutions of these problems. It is assumed that these problems are different in every rural areas according to their locational context.The rural areas in the vicinity of city are selected for this study and these are three hamlets in Oksan Myon neighboring Cheongju City (Fig.1).The data were collected by interview with residents in the study area using questionnaire. The analytic procedure for this study is as follows. 1) To see the degree of rural outmigration in the study area,the numbers of migrants and households containing individual migrants are counted and the ratio between migrants and residents are calculated in each study area. 2) The motive,selectivity and destination of outmigration are explained by comparative analysis between migrants and residents in the context of their age, sex, education and income level. 3) From these,the resulting problems are described and some solutions are supposed. In these contexts,the following concluding remarks are made. Study areas experience rural depopulation due to steady outmigration and this reduces the effectiveness of investment for establishments of public facilities and service functions in runal areas.Thus it becomes a hindrance to desirable living of rural residents. Outmigration in study areas also reveal the selectivity of age,sex and education.The age group 20-30 are most highly leaving the rural areas and males are more migratory than females.The more educated,the more migratory. It means the outflow of agricultural labor forces possessing high productivity. Therefore,agriculture is managed by farmers who have low productivity. This results in stagnation of agriculture and low income of rural households in study areas. And thus,economic motive for migration appeared as the most influential one in study area.The stagnation of income results in the delay of agricultural mechanization which seems to be the best method to cope with the lack of labor forces due to financial deficits.Therefore,the rural areas meet with duplicated difficulties. The destination of migrants differ in their motives.These are Seoul Metropolitan Area for occupation and Cheongju City for education respectively. Because Cheongju City cannot offer sufficient employment opportunities,she is not selected as the destination of outmigrants from study areas and commuting to her rarely take place. Thus,I think that the best solutions of these problems are to seek the methods which settle down the rural population in rural areas and which increase the income of farming houscholds.The public investment by government authorities are needed for the improvement of living conditions in rural areas though ineffective.Besides the enhancement of agricultural income through intensive land use,increase of agricultural productivity per unit area,agricultural mechanization etc.,it is desirable in rural areas near the city that rural households get income from nonagricultural sectors to rise their income level.It is possible through that rural residents get a job at neighboring city and commute.For this the regional center which can offer sufficient employment opportunities,public facilities and service functions should be developed within short distance from rural areas.

정상 교합자의 세가지 안면 성장유형에 따른 ODI, APDI의 변화

이선령,박경덕,경희문,성재현 대한치과교정학회 1996 대한치과교정학회지 Vol.26 No.5

본 연구는 안면성장유형에 있어서의 피개교합심도지수, 전후방부조화지수의 성장에 따른 변화 양상을 알아보기 위하여 정상교합자 남자 19명, 여자 14명의 10년간 격년으로 촬영한 X-선 규격사진을 Y-axis의 연구기간동안 총변화량에 따라 Drop, Neutral, Forward의 세군으로 나누어 분석하여 각 계측항목에 관하여 다음과 같은 결과를 얻었다. · 남녀 각 안면유형에서 각 연령군의 각 계측항목의 평균과 표준편차를 얻었다. · 안면유형에 따른 세 그룹간 비교에서 전후방부조화지수와 피개교합심도지수는 전 연령구간에서 유의차를 나타내지 않았다(P>0.05). 피개교합심도지수는 남녀 모두 전 연령구간에서 Drop, Neutral, Forward의 크기순으로 나타났다. · 피개교합심도지수와 전후방부조화지수는 전연구기간동안 연령증가에 따른 변화없이(P>0.05) 안정되게 유지되는 양상을 보였다. · Y-axis의 총변화량과 각 계측항목의 상관성 조사에서 A-B plane angle, Facial angle은 남녀 모두에서 상관성을 나타내었고(P>0.05) 전후방부조화지수는 여자에서만 상관성을 나타내었으나(P<0.001) 피개교합심도지수는 남녀 모두에서 상관성을 나타내지 않았다(P>0.05). The purpose of this study was to analyze the growth changes of ODI and APDI with age on the three facial growth patterns. The biennial serial cephalometric radiographs of 19 male and 14 female samples with normal occlusion during 10 years were used in this study. The samples were divided into three groups-drop type, neutral type, forward type-by the total change of the Y-axis during the periods of the study. The findings in this investigation indicated the following: 1. The mean values and standard deviations of each age group in each facial type of male and female were obtained. 2. The difference of ODI and APDI among the 3 facial types was not significant through all observed ages(P>0.05). The size of ODI appeared large consistently in order of the drop, neutral, and forward type in both male and female through all observed ages. 3. The ODI and APDI were maintained without any changes with age during the periods of the study(P>0.05). 4. In correlation analysis between the total change of the Y-axis and 6 measurements, the AB plane angle and facial angle showed correlation in both male and female(P<0.05), the APDI in only female(P<0.001), but the ODI not appeared correlation in either male or female(P>0.05).

바흐찐, 데리다, 비트겐쉬타인

이득재 대구효성가톨릭대학교 외국어문학연구소 1997 語文學硏究 Vol.9 No.-

SnO₂/TiO₂후막형 습도센서의 제조 및 특성

이건동,이재현,박효덕,이덕동,최흥문 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

SnO_(2) doped with TiO_(2) and other activating agents, is used as a raw material to prepare humidity sensors. SnO_(2) is an n-type semiconductor whose resistance is described as a function of relative humidity. SnO_(2)/TiO_(2) thick film humidity sensors have been fabricated by using typical silk screen printing techniques. The humidity sensitivity of SnO_(2)/TiO_(2) thick film has been investigated. And the sensing characteristics of the fabricated SnO_(2)/TiO_(2) sensors such as resistance change and response time, has been investigated from R.H.20 % to 90 %. Experimental results show that the impedance-humidity characteristics of the humidity sensors depend on the microstructure of surface roughness and pore size distribution.