요추 전산화 단층촬영 소견과 요추부 화학적 수핵 용해술의 예후와의 관계

오성훈,김영수 대한신경외과학회 1988 Journal of Korean neurosurgical society Vol.17 No.5

The therapeutic response to treatment of lumbar disk heniation with chymopapain chemonucleolysis is significantly influenced by the criteria used for patient selection. In an attempt to identify objective pretreatment radiographic findings, especially spine CT scanning, that might refine selection criteria and further increase to success rate of chemonucleolysis, a retrospective correlation of pretreatment spine CT findings and clinical results eas made of 1000 consecutive patients from May 1984 to September 1987 at the Dept. of Neurosurgery, Yongdong Severance Hospital, Yonsei University College of Medicine. The data were obtained from a questionnare and clinical records. Overall success rate was 87.5%. The favorable CT parameters to define the higher successful rate of chemonucleolysis included : 1) single level treatment ; 2) posteriorlateral directed herniation ; 3) mild to moderate degree protrusion ; 4) protruded type herniation ; 5) not combined facet hypertrophy or sipinal stenosis. The unfavorable CT parameters placed into lower successful rate of chemonucleolysis included : 1) multiple levels treatment ; 2) degenerative bulging annulus ; 3) severe degree protrusion ; 4) sequestered type herniation ; 5) combined degenerative spondylosis or facet hypertrophy of spinal stenosis, bony spur or calcification of disc.

소아요추간판 탈출증 환자의 임상적 분석

오성훈,김영수 대한신경외과학회 1988 Journal of Korean neurosurgical society Vol.17 No.5

Herniated lumbar disk occur rarely during childhood and infrequently during adolescence. Authors reviewed the radiographs and medical records of 33 consecutive patients(22 males and 11 females) younger than 17 years who underwent lumbar discectomy and chemonucleolysis between 1983 and 1988 at the Dept. of neurosurgery, Yongdong Severance Hospital, Yonsei University College of Medicine. The average length of follow-up was 8.8 month. The duration of symptoms before surgical intervention varied from weeks to 5 years and characterized by bimodal high incidence from 2 months to 6 months and over 1 year. Spine CT scan was a most important part of the radiographic evaluation. Trauma was not a significant etiologic factor. All of the patients(100%) had lower back pain with sciatica, while a positive Laseque's test and limited back motion were the most frequent objective findings. The clinical picture was similar to that in the adult. But objective findings dominate in children, and their complaints were minor. Then we finded that a strongly positive stratight leg raising test, scoliosis and other prominent physical signs justify surgery, if effort at conservative therapy had been unrewarding. The disk operations were performed at the L4-5 level in 54.5% of patients, the L5-S1 level in 27.5%, the L3-4 level in 3%, the L4-5 and L5-S1 level in 15%, Twenty eight of the 33 patients underwent chemonucleolysis and five underwent partial hemilaminectomy with discectomy. After surgical treatment including chemonucleolysis in this group of patient, the results were excellent in 60.6%, good in 36.3%, and fair in only 3.1%.

하악골 골절에 대한 임상통계학적 연구

이성훈,김기영,조규승,소광섭,박홍주,조요기,오희균,유선열 大韓顎顔面成形再建外科學會 1998 Maxillofacial Plastic Reconstructive Surgery Vol.20 No.1

노인의 우울·불안 및 인지기능에 미치는 인자들의 영향에 관한 연구

류성훈,이귀행,오상우 大韓神經精神醫學會 1990 신경정신의학 Vol.29 No.4

This study was to investigate the influence which several sociocultural factors and physical states had one the anxiety, depression and cognition of the aged. The relationship among the anxiety, depression and cognition was also evaluated. The subjects were 509 aged who were 60 years old or more and lived in JeonJu-Iri areas. The authors employed Spielberger's State-Trait Anxiety Investory for anxiety. Beck Depression Investory for depression and Folstein's Mini-Mental State Examination for cognition. The duration of this study was from March 5 to April 25, 1989. The results were as follows : 1) The group of institutional residence showed lower scores state anxiety trait anxiety(p<.05) and cognition(p<.001) than the group of familial residence. Both groups showed no difference on depression. 2) The group with physical illness showed higher score of state anxiety, trait anxiety and depression and lower scores of cognition than the groups without physical illness(p<.001). 3) Female group showed higher score of depression and lower score of cognition than male group((p<.001). There was no difference on sate anxiety and trait anxiety. 4) Education level showed negative correlation with state anxiety(p<.05), depression(p<.001) and positive correlation with cognition(p<.001) and no significant correlation with trait anxiety. 5) In the group of institutional residence, the duration of institutional residence showed negative correlation with cognition(p<.05) and no significant correlation with state anxiety, trait anxiety and depression. 6) The amount of personal expenses per month showed negative correlation with sate anxiety, trait anxiety and depression and positive correlation with cognition(p<.001). 7) State anxiety, trait anxiety and depression showed positive correlation one another and cognition showed negative correlation with anyone of the above three each other(p<.001).

계승치의 결손을 동반한 상, 하악 유구치의 다발성 유착에 대한 증례보고

정회훈,최형준,김성오,최병재,이제호 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.3

치아유착은 치근의 상아질 또는 백악질이 치조골과 융합된 것으로 치아의 맹출이상을 야기하여 치조골 성장의 장애를 일으킨다. 본 6세 여아는 유구치의 유착과 영구 소구치의 결손을 주소로 본과에 의뢰되었으며 특이할 만한 의과적, 치과적 병력은 없었다. 구강검진 소견상 상, 하악의 좌, 우측 유구치에서 저위교합이 관찰되었으며, 다수의 치아우식증이 존재하였다. 방사선 사진 검사 소견상 상악의 좌, 우측 영구 견치와 계승 소구치의 결손, 상악 유구치의 치근흡수와 하악 유구치의 치주인대공간의 소실 및 미약한 치근흡수가 관찰되었다. 계승 영구치의 결손을 동반한 유구치 유착시 치료목표는 적절한 치조골 성장과 유치의 유지이며, 유착의 발현 시기와 치근의 흡수 정도에 따라 관찰, 수복 또는 발치 등의 치료를 고려할 수 있다. 유착치아의 발치는 인접 치조골 성장에 문제가 없고 인접치의 경사가 일어나지 않도록 최대성장점(growth spurt)을 고려하여 그 시기를 결정해야 한다. Ankylosis is defined as a fusion of cementum or dentine with alveolar bone. Due to the loss of the periodontal ligament on the ankylotic area, the tooth is incapable of continued eruption and hence is unable to follow the normal vertical development of the neighboring teeth and alveolar process. A 6-year-old female was referred to the Dept. of Pediatric Dentistry for ankylosis of primary molars and congenital missing of permanent premolars on both jaws. She had neither specific past medical history nor trauma and infection history in oral and maxillofacial region. Radiographic finding is that the maxillary primary molars were the early onset of ankylosis and had fast root resorption rate. However the mandibular primary molars were ankylosed later and being resorbed slower than maxillary primary molars. The object of treating this case is to maintain the proper alveolar bone growth and retention of deciduous molars. The point of managing this case is as follows: Proper treatment (observation, restoration, of extraction) should be established after thorough consideration of the time of onset, the root resorption rate, progression of infraocclusion and the development of alveolar bone support. We should consider the timing of extraction of the ankylosed teeth without problem of neighbouring alveolar bone growth and tilting of adjacent teeth in the view of growth spurt. Early diagnosis is important to avoid many of the complications with infraoccluded primary molars.

재가 의료보호대상 정신질환자의 특성에 대한 조사 : 서울특별시 7개 보건소 등록 환자를 대상으로

이주훈,오석배,박종원,지성학,장화순 용인정신의학연구소 1994 용인정신의학보 Vol.1 No.2

폐산과 폐알칼리를 이용한 폐지류의 전처리

진양오,윤철종,우성훈,최성우,김익성,박승조 동아대학교 환경문제연구소 1999 硏究報告 Vol.22 No.1

The objective of this study were to treat waste paper with waste acid and alkali so to enhance maturity of the wastes. The sample was office paper and news paper which ratio was 1:1 and the reagents for pre-treatment were sulfuric acid and sodium hydroxide for waste acid and alkali. The maturity indices were taken volatile solid. cation exchange capacity, and gas production variation. The pre-treatment method was to dip the sample in the reagent according to time, concentration, and dosage. The methods of treatment were to dip the wastes in leachate and to landfill in soil. The result of this study were as follow. When waste paper was treated by acid and alkali, the proper treatment condition was 24hours and 0.1 normality of acid and alkali. The pre-treated samples with acid and alkali such as RSN and RSH were more effective in maturity than non-treated sample such as RS. The post-treated sample such as RSL, RSNL, and RSHL was more effective than nonpost-treated sample such as RS, RSN, and RSH.

韓國人의 各 臟器組織中 靑酸鹽의 微量分布에 關한 硏究(Ⅱ)

張成吉,金恩浩,金英雲,李鎭勳,柳在薰,權五星,金明德,吳世珍,金由那 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

심초음파로 결정된 응급 심낭천자술의 천자부위

김성환,황성오,이강현,조준휘,강구현,문중범,이승환,윤정한,최경훈,김영식 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3

Background: The aim of this study was to determine whether the conventional subcostal approach is suitable for emergency pericardiocentesis in patients with cardiac tamponade or impending cardiac tamponade. Methods: This study was a prospective, observational study conducted at the emergency department of a tertiary hospital, Patients who had symptomatic pericardial effusion and who needed emergency pericardiocentesis in the emergency department were included in this study. We measured the epicardium-to-pericardium distance at the subcostal, parasternal, and apical area with two-dimensional echocardiography to determine the appropriate puncture site for pericardiocentesis. An epicardium-to-pericardium distance of more than 1.0 cm was considered as the primary safety factor in determining the Puncture site for pericardiocentesis. The skin-to-pericardium distance was considered as secondary safety factor. Results: Ninety-five consecutive patients(55 males and 40 females; total mean age: 53 year old) with cardiac tamponade or impending cardiac tamponade were enrolled in this study. The puncture site for pericardiocentesis, as determined by echocardiography, was the subcostal area in 43 patients(45%), the apical area in 40 patients(42%), the left parasternal area In 11 patients(12%), and the right parastemal area in one patient(1%). Pericardiocentesis failed in 2 patients(2%) with the subcostal approach and in one patient(1%) with the apical approach. The average epicardium-to-pericardium distance was 31 ±21 mm in patients with the subcostal approach and 21±8 mm in patients with other approaches. There were no differences in the amount of pericardial fluid and in the intraperical pressure among patient groups according to puncture site. There were two procedure related complications: a puncture of the right ventricle with the subcostal approach and a ventricular tachycardia with the apical approach.

NiAl/Ni₃Al 2상 합금의 상변태 및 미세조직에 미치는 제3원소 첨가효과

송성훈,김수현,오명훈,위당문 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.12

The microstructural evolution of b-NiAl/γ' -Ni3Al two-phase (Ni_(66)Al_(34))_(100-x)X_(X)(X=Ti, Si, Nb) alloys during various heat treatment (quenching and aging) were systematically studied. It was found that the microstructural features of the two-phase NiAl/Ni₃Al alloys could be divided into three types : lamellar, mesh and Widmansttten microstructures. The reason why those three types of microstructure were formed could be explained by the change of austenite start temperature(As temperature) depending on the ternary elements. In case of As>250℃, the lamellar microstructure was formed by following phase transformation: Martensite→Ni5Al3→β+γ' . In this case, the NiAl martensite was quickly transformed into the Ni5Al3 phase at 250℃ by a re-ordering reaction. In case of 20℃ <A_(s)<250℃, two types of mesh microstructure were formed depending on the ternary element. When Ti and Nb were added as a ternary element, the β→Ni_(5)Al3 transformation occurred very quickly, but not in the case of Si addition. Hence, the final mesh microstructures showed somewhat different microstructural features. On the other hand, in case of A_(s)<20℃, the direct β→β+γ' transformation occurred because the martensitic transformation could not occur due to its very low M_(s) temperature, resulting in the Widmanstatten type microstructure.