혈액 투석 환자에서 중심정맥 협착에 대한 스텐트 삽입술 : Wallstent Placement

임대승,노상필,이유선,정승현,김보영,이정우,강정아,김정희,이민수,정준용,최시완,정진옥,성인환,이강욱,신영태 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1

Stenosis of central vein is a common complication arising after percutaneous subclavian vein catheter insertion performed for temporary vascular access in chronic renal failure patients undergoing hemodialysis. There are several treatment methods for the condition like percutaneous angioplasty(PTA), stent insertion, and surgery, but recent trend is toward PTA and stents. Among the patients diagnosed with chronic renal failure from March 1993 to May 2002 and undergoing hemodialysis through AV fistula, the 14 Patients in whom central vein stenosis arose were selected for the study. A total of 28 percutaneous interventions(5 PTA and 23 stent placement) were performed, and restenosis rate and the time taken till the restenosis in de novo lesions and instant lesions were compared. All 28 cases were operated successfully. The 14 cases that received both anigioplasty and stent placement initially. (de novo lesion : 14 cases), Among the 10 cases with de novo lesion that followed up more than 1 year, 3 cases are currently undergoing hemodialysis without restenosis, and the remaining 7 cases have recurred stenosis with the mean time to restenosis of 10.9 months. In the 7 cases in whom stenosis recurred, 11 interventions were done(instent lesion: 11 cases). 4 of these were using only ballon angioplasty with 100% restenosis rate and the mean time of 3 months until restenosis. The remaining 7 cases were using both balloon angioplasty and stent placement, also with 100% restenosis rate but with the mean time of 12 months until restenosis, which was later than the group receiving only balloon angioplasty. In treating the patients with central vein stenosis, stent placement seems to be more advantageous over PTA in terms of restenosis rate and the mean duration of patency. In the case of instent lesion, inserting the stent for the second time after stenosis recurred lengthened the duration of patency compared to performing balloon angioplasty alone.

영구형 항서맥 심박조율기 환자의 장기추적관찰

최현석,이무용,최영진,최성준,김효수,손대원,오병희,이명묵,박영배,최윤식,이영우,이명용 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.5

저체중 출생이 학동기 및 청소년기 소아 천식의 중증도에 미치는 영향에 대한 고찰

정훈 ( Hoon Jeung ),김형대 ( Heung Dae Kim ),이윤진 ( Yun Jin Lee ),이균우 ( Kyun Woo Lee ) 대한소아알레르기호흡기학회(구 대한소아알레르기 및 호흡기학회) 2006 소아알레르기 및 호흡기학회지 Vol.16 No.1

목 적 : 본 연구는 저출생 체중아로 출생한 소아에 있어서 학동기 및 청소년기 소아 천식의 중증도에 미치는 영향에 관해서 후향적으로 검토하였다. 방 법 : 대동병원 소아과와 호흡기내과에 통원 중에 있거나 부산 동래구 및 연제구 소재 개인의원에서 대동병원으로 전원 된 천식 환자 중에서 8세 이상 18세 이하의 소아 및 청소년을 대상으로 출생체중을 기준으로 1,500 g 이상 2,500 g 미만인 15명을 추출하여 연구군으로 하고 출생체중 2,500 g 이상이며 연구군의 나이에 일치하는 순서대로 2명씩 추출하여 이 30명을 대조군으로 하였다. 결 과 : 양군을 비교한 결과 천식 중증도는 연구군에서 유의하게 높았다.(P=0.015) 또 흡입 스테로이드 약의 사용 빈도(증례군 13명/15명, 대조군 4명/30명 : P=0.0001)와 사용 기간에 있어서도 연구군에서 유의하게 높게 나왔다.(P= 0.009) 혈중 총 IgE치와 아토피피부염의 유병률은 대조군에서 높았다.(각각 P=0.007, P=0.0001) 폐기능 검사와 PC(20), 특이 IgE 항체는 두 군 사이에 유의한 결과를 볼 수가 없었다.(P>0.05) 결 론 : 천식의 중증도와 흡입 스테로이드 사용의 빈도와 기간 등으로 미루어 볼 때 저출생 체중은 소아 천식의 중증도를 증가시키는 요인 일 수 있음을 시사한다. Purpose : Over the past several decades, the survival rates of low birth weight(LBW; birth weight <2,500 g) infants have been improving. Many of these infants have had bronchial asthma(BA) at childhood and aldolescence. The aim of this study is to investigate whether LBW influenced the severity of BA in prealdolescent children and aldolescence by a retrospective case control study. Methods : 15 LBW children(1,500 g<birth weight<2,500 g) between 8 year-old and 18 year-old with BA visiting Dae-dong hospital as the case group were compared with 2 BA children to each case as the control group(total 30 children) on the basis of following criteria : the same age, he/she attended Dae-Dong hospital or local medical center after 8 years old, birth weight was more than 2,500 g. Asthma severity was modified from 2003 Guideline for management of childhood asthma at The Korean Academy of Pediatric Allergy and Respiratory Disease. PFT(Pulmonary function test) were measured using a portable spirometer. The value are expressed as percentage predicted using standard reference values. Total IgE and specific IgE Ab. were assessed by the PRIST method and MAST Allergy Test. Methacholine challenge test and PC20 was assessed by the Masterlab. Results : LBW group had : a significantly more severe symptoms between 8 year-old and 18 year-old than control group.(P=0.015) A significantly more used to ICSs(Inhaled corticosteroids) and add-on therapy than control group.(P=0.009)(P=0.0001) There were no significant differences in the PFT and PC(20) and specific IgE Ab. between LBW group and control group. But, total IgE level is higher in the control group than in the LBW group. Conclusion : These results suggest that LBW is a risk factor for the severity of BA. We suggest that infants with birth weight of less than 2,500 g have a more severe risk of asthma during prealdolescent children and aldolescence than who were birth weight of more than 2,500 g. [Pediatr Allergy Respir Dis(Korea) 2006;16:38-46]

서초동(서울시 서초구)의 거미상

김주필(Joo Pil Kim),정혜리(Hye ri Jeong),김대희(Dae Hee Kim),박동우(Dong Woo Park),서재웅(Jae Woong Seo),이현우(Hyun woo Lee) 한국거미연구소 2017 한국거미 Vol.33 No.1

2016년 3월 31일부터 7월 31일까지 서울특별시 서초구 서초동에 위치한 서울고등학교 교정 일대를 서울고등학교 환경생물부 부원들이 채집 조사한 결과 20과 43속 53종의 거미가 조사 연구되어 이에 보고하는 바이다. From March 31st to July 31st in 2016, members of an environmental biology club at Seoul High School located in Seocho-gu, Seoul, Dae-Hee Kim, Dong-Woo Park, Jae-Woong Seo and Hyun-woo Lee, collected 20 families 43 genera 53 species of spiders and report the result of the study here.

백혈병환자에서 Liposomal Amphotericin B로 치료된 파종성 Fusarium 감염 1예

이지연,김성범,박대원,신성희,김용현,윤소영,엄중식,최철원,정희진,김우주,김준석,김장수,이갑노 대한감염학회 2003 감염과 화학요법 Vol.35 No.5

Fusarium spp.는 사람에서 드물게 각막염, 조갑진균증, 상처나 화상부위감염 등을 유발하는 것으로 알려져 있으나 최근에는 면역저하자에서 기회감염의 원인균으로 증가하고 있는 추세이다. 면역저하자에서 파종성 감염이 있는 경우에 예후는 치명적이나, 증례가 많지 않고 진단방법이 제한되어 있어 조기 진단과 신속한 치료가 쉽지 않다. 그러나 특징적으로 피부병변의 동반이 흔하여 면역저하자에서는 피부 병변의 면밀한 관찰과 함께 Fusarium 감염을 조기에 의심하여 피부생검이나 배양을 하는 것이 진단에 도움이 되리라 생각된다. 파종성 Fusarium 감염의 치료로는 감염 부위의 국소적 외과적 절제와 전신적 항진균제의 사용이 필요하고 현재까지는 amphotericin B가 비교적 효율적인 항진균제로 알려져 있으나 면역저하자에서 이에 반응을 하지 않는 경우가 많다. 저자들은 급성골수성백혈병 환자에서 관해유도화학요법 시행 후 호중구감소상태에서 피부병변과 폐침윤이 발견되었고 피부의 중심부 궤양을 동반한 구진성 병변에서 배양검사를 통해 파종성 Fusarium 감염을 진단하였으며 liposomal amphotericin B (AmBisome )를 사용하여 성공적으로 치료한 예를 경험하여 보고하는 바이다. Fusarium spp., basically a superficial pathogen, is a newly emerging fungal pathogen of opportunistic infections in immunocompromised patients. At present, although Fusarium spp. are relatively resistant to amphotericin B, the combination of amphotericin B and surgical debridement appear to be optimal treatment for disseminated infection. Recently we experienced a 32-year-old neutropenic patient after induction chemotherapy for acute myelocytic leukemia presented with skin lesions and infiltrations in both lungs. We diagnosed with disseminated fusariosis by skin culture and successfully treated the patient with liposomal amphotericin B. We emphasize a high index of suspicion for skin lesions especially in immunocopromised patients.

跳馬 Handspring 動作의 力學的 分析

李大珩,李勇仁,崔大雨 忠南大學校體育科學硏究所 1987 體育科學硏究誌 Vol.5 No.1

Mechanical analysis of the handspring motion at the long horse vault has been made as follows: 1. On setting the hands on the long horse vault, the heights of the subject body from the ground were 102cm (Subject A)and 132cm (Subject B), respectively. Subject A maintained the center of the body 30cm lower than Subject B. 2. Subject A took 0.06 seconds less than Subject B as for the time required from the feet leaving the mat to setting the hands on the long horse. 3. On taking the hands off the long horse, the power consumed was 26.88HP (Subject A)and 2.08 HP (Subject B), respectively. 4. At phase 1, the mean of HO and He was 134.76cm (Subject A), and 162.08cm and 94.96cm(Subject B), respectively. 5. The landing preparation when the neck joint is flexed was 9˚ in the frame 23(Subject A)and 176˚in the frame 31(Subject B), respectively. That means that Subject A made an earlier landing preparation than Subject B. 6. In phase 2, the mean of force was 7869.71 Newton (Subject A)and 3672.79 Newton(p<0.01)(Subject B), respecrively. That shows that Subject A consumed more force than subject B. 7. Subject A set the hands on the long horse earlier than Subject B. Subject A had the better position, when taking the hands off the horse than Subject B. On setting the hands on the horse, Subject B failed in the right landing, because the knee joint was much overflexed.

다공질규소 microcavity의 페브리-페로 필터 특성

이춘우,박대규,홍사용,김영유,전종현 公州大學校 基礎科學硏究所 1999 自然科學硏究 Vol.8 No.-

p형 단결정규소 웨이퍼를 15% HF-에탄올 용액에서 양극 산화시켜 다공질규소를 얻는 과정에서 전류밀도에 따라 굴절률이 변하는 다층의 다공질규소층(porous silicon multilayer)을 구현하였다. 그리고 다층의 다공질규소층(I), 다공질규소 발광층, 또 다른 다층의 다공질규소층(II)의 순으로 구성된 porous silicon microcavity(PSM)를 제작하고 그 물성을 조사하였다. PSM 상하에 위치한 다층의 다공질규소층의 단면을 AFM(Atomic Force Microscope)으로 조사한 결과 고굴절률과 저굴절률이 주기적으로 교차하는 층이 균일하게 형성되었으며, 중앙의 다공질규소 발광층도 균일하게 나타났다. 다층의 다공질규소층 및 다공질규소 발광층의 두께를 각각 실효파장의 1/4배 및 2배가 되도록 하였을 때 특정파장의 필터로 쓰일 수 있는 페브리-페로 간섭 필터(Fabry-Perot interference filter)의 특성이 나타났다. 또한 PSM의 발광 스펙트럼은 그 반치폭이 현저히 감소하고 발광의 세기가 크게 증가되는 경향을 보였다. 또한 발광파장을 600 nm로 조절하여 PSM을 구현하고 발광 특성을 관찰한 결과 600 nm 부근에서도 같은 현상이 일어나 발광의 최대 봉우리 파장값을 이동시킬 수 있는 필터로서의 역할이 가능함을 보였다. In the process of obtaining porous silicon by anodizing p-type doped crystalline silicon wafer in 15 % HF-ethanol solution, we obtained porous silicon multilayers which had periodically varying refractive index by the current density. We fabricated the porous silicon microcavity(PSM) which consist of porous silicon multilayers(I), active layer of porous silicon and porous silicon multilayers(II) and investigated its physical properties. The AFM(Atomic Force Microscope) measurement from the cross section of multilayers I and II) shows uniformity of high refractive index and low index layers as well as the active layer. We observed the characteristics of Fabry-Perot interference filter when the thickness of layers was 1/4 and the thickness of active layer was twice of the effective wavelength, which can be used as a filter for specific wavelength. We found the emission characteristic from the PSM, which FWHM(Full Width Half Maximum) was considerably decreased and emission intensity was increased. And as a result of fabricating PSM which consisted of 600 nm in the light emission wavelength and observing the light emission properties, We found out that there was the same phenomenon in 600 nm wavelength and PSM could act as a filter which could shift the maximum of the emitted light.

플라톤과 아리스토텔레스의 정치사상 비교 연구 : 정치이론과 정치적 복종의 이론적 기초를 중심으로 an analysis on political theory of the justice and basis of political obedience

이대우,백승주 부산대학교 사범대학 1985 교사교육연구 Vol.11 No.-

The questions concerning about both the justice theory and political obedience have been an object by the most illustrious thinkers from the Greek times to nowadays. As we know these subjects were studied so passionately and intensively by Plato, Aristotle. First, this study will contribute to find and understand the differences between Plato's theory and Aristotle's on these subject. This paper on comparative study of political thought of Plato, Aristotle has two aims. First, this study will contribute to find and understand the differences between Plato's theory on these subject and Aristotle's. In addition, this will help the persons who are interests in these subject in investigating the general theory concerning with the justice theory. Second, this paper will increase the understanding in the basis of the political obedinace and the political philosophy of Plato, Aristotle in relation to the legality of the political power that established by M. Weber, S. Lipset, and so on, which has a close relation to political stability in modern state. Through this work, the main findings under these aims can be summarized as follows. 1. Much differences are found in comparative study in the political theory about justice of the two. The differences are clear in the method of discovering and establishing of justice in both individual and state, in the intellectual attitude toward the relations between customs(or conventions) and justice, procedural justice which has an important relations to legality, education that means the method to embody justice theory in police, and the need of uniformity for the good social order. 2. Equally, both emphasized the virtue which has the same meaning of ethical legality of political power by M. Weber. But Aristotle, who emphasized the existence of "the supreme government" that has a similar meaning of social plausibility of the political power by M. Weber can be evaluated as a realistic theorist in politics and contributes to explain the legality of political power in modern state.

유동가시화를 이용한 플랩을 갖는 2차원 날개 단면의 유동 특성에 관한 고찰

이경우,조대환,최민선 木浦海洋大學校 2001 論文集 Vol.9 No.2

구강외과 수술용 스텐트 기반 영상유도 수술 시스템의 개발

이우진,김대승,이원진,이삼선,최순철,허민석,허경회,김명진,이지호 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.3

Purpose : The purpose of this study was to develop a stent-based image guided surgery system and to apply it to oral and maxillofacial surgeries for anatomically complex sites. Materials and Methods : We devised a patient-specific stent for patient-to-image registration and navigation. Threedimensional positions of the reference probe and the tool probe were tracked by an optical camera system and the relative position of the handpiece drill tip to the reference probe was monitored continuously on the monitor of a PC. Using 8 landmarks for measuring accuracy, the spatial discrepancy between CT image coordinate and physical coordinate was calculated for testing the normality. Results : The accuracy over 8 anatomical landmarks showed an overall mean of 0.56±0.16 mm. The developed system was applied to a surgery for a vertical alveolar bone augmentation in right mandibular posterior area and possible interior alveolar nerve injury case of an impacted third molar. The developed system provided continuous monitoring of invisible anatomical structures during operation and 3D information for operation sites. The clinical challenge showed sufficient accuracy and availability of anatomically complex operation sites. Conclusion : The developed system showed sufficient accuracy and availability in oral and maxillofacial surgeries for anatomically complex sites. (Korean J Oral Maxillofac Radiol 2009; 39 : 149-56)