변형적 Carpentier 방법에 의한 Ebstein 기형의 수술적 교정 -1 례 보고-

이건,김웅한,이창하,나찬영,정윤섭,정도현,김수철,이영탁,김종환,홍승록,박영관,Lee, Gun,Kim, Woong-Han,Lee, Chang-Ha,Na, Chan-Young,Jeong, Yoon-Seop,Jeong, Do-Hyun,Kim, Soo-Cheol,Lee, Young-Tak,Kim, Chong-Whan,Kim, Sung-Nok,Park, Young- 대한흉부심장혈관외과학회 1998 Journal of Chest Surgery (J Chest Surg) Vol.31 No.2

Ebstein 기형은 복잡 심기형중 하나로 치료 또한 비정상적인 삼첨판막의 교정 또는 판막치환 등으로 방법이 다양하다. 이질환의 병리소견은 삼첨판의 중격엽과 후엽이 하방전위되어서 심방화된 심실을 형성하는 것으로 수술적 목표는 삼첨판의 기능이상을 교정하고 심방화된 우심실을 주름성형하는 것이다. 본원에서는 매우 심한 삼첨판막 폐쇄 부전증이 동반된 Carpentier type A의 Ebstein기형으로 진단된 12개월된 여아에 대해 심방화된 우심실을 수직방향으로 주름성형하고 판막을 새로이 형성된 판륜에 재부착시키는 이른바 변형적 Carpentier방법으로 성공적으로 수술하였다. 수술후 환아는 심장의 크기가 매우 줄어들었고 심초음파상 미미한 정도의 삼첨판 폐쇄부전증만 남아 술후 14일째 퇴원하였다. Ebstein's anomaly is a complex malformation that can be treated by various surgical techniques, either repair or replacement of the abnormal tricuspid valve, with variable results. The essence of the malformation is the downward displacement of the septal and posterior leaflets into the ventricle, resulting in the formation of an atrialized portion of the right ventricle. The aim of surgical repair is to correct the tricuspid valve dysfunction and to plicate the atrialized portion of the right ventricle A 12-months old female was admitted with the diagnosis of Carpentier type A of Ebstein's anomaly with severe tricuspid regurgitation. She successfully underwent operation with vertical plication of right ventricle and reimplantation of tricuspid leaflets. Postoperatively cardiac size was significantly reduced and tricuspid regurgitation was trivial in echocardiography. She was diacharged the 14th postoperative day.

한국인의 연령별 기관 내경 및 단면적 분포에 대한 분석 -흉부전산화단층촬영을 이용한 측정-

이건,김대식,문승철,구원모,양진영,이헌재,임창영,한헌,김광호,선경,Lee, Gun,Kim, Dae-Sik,Moon, Seung-Chul,Koo, Won-Mo,Yang, Jin-Young,Lee, Hyeon-Jae,Lim, Chang-Young,Han, Hyeon,Kim, Kwang-Ho,Sun, Kyung 대한흉부심장혈관외과학회 1999 Journal of Chest Surgery (J Chest Surg) Vol.32 No.5

서론: 성장기에서 기관의 성장양상에 관한 이해는 수많은 기관질병의 관리나 선천성 기관협착증에서 기관 성형술 등에서 매우 중요한 지표가 된다. 그러나 이에 관한 국내의 연구례가 거의없는 실정이다. 본 연구는 한국인 소아에서 기관의 내경과 단면적을 후향적으로 분석하여 기관질환의 치료에 기초자료를 제공하고자 한다. 대상 및 방법: 1996년 5월부터 1998년 8월까지 흉부전산화 단층촬영을 시행한 0세부터 20세까지 106명의 환자를 대상으로 하였는데 기관의 내경이나 단면적에 영향을 줄 수 있는 기관질환, 과거에 개흉술을 받은 경우, 종격동 종양, 폐쇄성 폐질환이 있는 경우는 본 연구에서 제외시켰다. 남자가 69명, 여자가 37명이었으며 기관의 종단내경과 횡단내경은 흉부유입부와 대동맥궁 부위에서 각각 측정하였다. 기관의 형태는 각 부위의 단면에서 원형, 타원형, 말발굽형으로 구분하였으며 단면적은 A = 1/4$\pi$ab (A: 단면적, $\pi$: 3.14, a: 종단내경, b: 횡단내경)의 공식으로 계산하여 각 부위의 내경과 연령 및 성별에 따른 단면적을 비교 분석하였다. 통계처리에서 p값이 0.05이하일 때 통계적 의미가 있는 것으로 간주하였다. 결과: 5세이하에서는 level I과 II 모두에서 기관의 형태가 원형을 이루고 있었으며 두 부위간의 단면적의 차이는 없었다. 성장함에 따라 level I의 형태는 타원형으로 변해가는 반면 level II에서는 그대로 원형을 유지하고 있었으며 level I의 단면적이 level II 보다 크다(p=0.020). 기관의 내경과 단면적은 성장함에 따라 직선관계로 증가한다는 것이 확인되었고(r>0.9), 5세이하의 소아에서는 여자가 남자보다 기관의 단면적이 크고 (p=0.020) 15세가 넘으면 반대로 남자가 더 크다 (p=0.002). 결론: 이상의 결과에서 흉부전산화 단층촬영은 기관의 내경과 단면적을 측정하는데 있어 안전하고 확실한 방법이며 성장기의 한국인에서 기관의 내경과 단면적에 대한 지표가 되고자 한다. Introduction: Understanding the normal distribution of the tracheal diameter and crross- sectional area is one of the key elements in the management of various tracheal pathologies or tracheal reconstruction for the patients in growing age. However, data for Korean standard has been lacking. This study was designed to analyze retrospectively the distribution of tracheal diameter and cross-sectional area in young Koreans, which can afford fundamental data for the management of tracheal diseases. Material and Method: Of the patients who underwent computerized tomogram of the chest between May 1996 and August 1998, one hundred six young patients(age range: 0-20 years) were included. Patients with any conditions which might affect the tracheal cross-sectional area or diameter, such as tracheal disease, previous operation, mediastinal tumor, or obstructive lung disease were excluded from the study. Gender distribution was 69 males and 37 females. Tracheal diameters, anterior-posterior and transverse, were measured at the level of the thoracic inlet(level I) and the aortic arch(level II). Types of the trachea were divided into round, oval, or horseshoe shaped on cross-sectional view, and the dimension was calculated by using the equation of A=1/4$\pi$ab(A; area, $\pi$; 3.14, a; anterior-posterior diameter, b; transverse diameter). We analyzed the distribution of the diameter at each level and compared the cross-sectional area with respect to age and gender. A p-value lower than 0.05 wa considered significant. Result: The trachea of patients less than 5 years old were round in shape at both of level I and II, and no differences in cross-sectional area was observed between the levels(p=NS). As the age increased, the trachea become oval in shape at level I while it remained round in shape at level II(p=0.020). The tracheal diameter and cross-sectional area increased as the age increased with a linear correlation(r>0.9). In patients less than 5 years of age, female patients showed larger cross-sectional area than male patients (p=0.020), and it was reversed in patients older than 15 years of age(p=0.002). Conclusion: From the above results, we suggest chest computerized tomogram as a safe and reliable tool in measuring the tracheal diameter and cross-sectional area. We also provide the data as a standard for distribution of the tracheal diameter and cross-sectional area in young Korean population.

외상성 유미흉, 2례 보고

이건,박형주,최영호,이인성,김학제,김형묵,Lee, Gun,Park, Hyoung-Ju,Choi, Young-Ho,Lee, In-Sung,Kim, Hark-Jae,Kim, Hyoung-Mook 대한흉부심장혈관외과학회 1992 Journal of Chest Surgery (J Chest Surg) Vol.25 No.12

Traumatic chylothorax is the presence of lymphatic fluid in the pleural space resulting from thoracic duct rupture, This condition is a serious and often life-threatening clinical entity. Operative trauma is most common mechanism of injury, but we experienced two case of chylothorax due to blunt trauma. One case was treated conservatively, another case was treated surgically.

창고형 마트 서비스를 위한 디자인 프로세스 연구

서유진(Su Yu-jin),송민지(Song Min-ji),이건도(Lee Gun-do),이도윤(Lee Do-yun),이상민(Lee Sang-min),이유정(Lee Yu-jung),이효정(Lee Hyo-Jung),박소희(Park So Hee) 한국디자인학회 2017 한국디자인학회 학술발표대회 논문집 Vol.2017 No.11

The Behavior of the {311} Facet in the Selective Epitaxial Growth of Si(100)

Gun-Do Lee,이건도,윤의준,Seung-Hyun Lim 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.45 No.3

The behavior of the f311g facet, which is observed in the selective epitaxial growth (SEG) of Si(100), is investigated by ab initio calculations and by tight-binding calculations by using the environment-dependent tight-binding Si potential. The most stable structure of the f311g facet in the long range order is found to be 3 2 interstitial structure by the calculation of the surface energy. By comparing maximum binding energies of adatoms on various structures of Si(311), it is found that the phase transition observed at 700 C is the transition from the 3 2 interstitial to the 3 1 interstitial structure and the phase transition is responsible for the behavior of the f311g facet. By tight-binding molecular dynamics simulation, it is also conrmed that the transition from the 3 2 interstitial to the 3 1 interstitial structure is induced by an adatom at high temperature, and it corresponds to the transition from the 3 2 to the 3 1 phase of the Si(311) surface observed in experiment. s

흉부둔상에 의한 무명동맥 파열 -치험 1례-

이건,김용인,Lee, Gun,Kim, Yong-In 대한흉부심장혈관외과학회 1997 Journal of Chest Surgery (J Chest Surg) Vol.30 No.10

무명동맥은 길이가 짧고 흉곽에 의해 잘 보호되기 때문에 흉부둔상에 의한 무명동맥의 손상은 매우 드물다. 본 증례는 흉부둔상을 수상한 37세의 남자에서 발생한 무명동맥 파열로 흉부W와 대동맥 조영술로 진단되었다. 정중흉골절개를 통한 응급 수술을 시행한 바 무명동맥의 근위부에 길이와 폭이 각각 3 cm의 가성동맥류를 형성하고 있었고 혈관 내피의 완전파열을 관찰할 수 있었다 무명동맥의 근위부를 대동맥궁 쪽에서 폐쇄시키고 손상된 부위를 절제한 후 10 m Gore-tex를 이용하여 대동맥-무명동맥 우회술을 실시하였다. 수술후 환자는 20일째에 신경학적 합병증없이 퇴원하였고 양측상지의 혈압도 동일하게 측정되었다. Rupture of an innominate artery caused by blunt chest trauma is extremel rare because this artery is short and relatively well protected by the bony cage. This report describes a 37-year-old male who sustained a blunt chest injury that resulted in an innominate artery rupture, detected by chest CT and thoracic aortography. The patient underwent an urgent operation through median sternotomy. A 3 by 3 m sized pseudoaneurysm of proximal innominate artery was found with a complete intimal tear. After the origin of the innominate artery was closed, the injured segment of artery was excised and an aorto-innominate artery bypass with a 10 mm Gore-tex graft was performed without use of a shunt. The patient was discharged 20 days later without neurologic complications and had equal blood pressure in both arms.

선박 추진축의 선회임계속도에 관한 연구

김용철(Yong Chul Kim),이건도(Gun Do Lee) 대한조선학회 1994 大韓造船學會 論文集 Vol.31 No.2

주행 환경에 따라 바퀴와 관절 주행을 동적으로 변경하는 다관절 로봇 시스템 개발

박상은 ( Sang-eun Park ),조민규 ( Min-kyu Cho ),박성욱 ( Sung-wook Park ),이건아 ( Gun-a Lee ),박서희 ( Seo-hui Park ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2

장애물이나 경사지가 많은 협소 지역에서 탐사 활동을 수행하는 로봇은 험지에서도 이동할 수 있는 자율주행 방법을 필수적으로 제공해야 한다. 본 논문은 협소 지역에서 탐사와 객체 탐지를 위해 주행 상황에 따라 바퀴 주행과 관절 주행을 동적으로 변경하면서 이동하는 다관절 로봇 시스템을 제안한다. 다관절 로봇은 마찰력과 수직항력, 토크 값 등을 고려해 설계한 운동 모델을 기반으로 바퀴와 관절 이동을 변경하면서 자율적으로 주행한다. 관리자는 관제 서버를 통해 로봇이 수집한 탐사정보를 실시간으로 확인하고 필요시 로봇의 원격제어를 수행할 수 있다. 본 연구를 통해 사람이 접근하기 어려운 협소 지역 탐사나 재난지역 인명구조 활동에 활용할 수 있기를 기대한다.

충수돌기에 국한된 크론병 2 예

이건(Gun Lee),장영운(Young Woon Chang),김수영(Su Young Kim),한요셉(Yo Seb Han),김영희(Yong Hee Kim),김교영(Gou Young Kim),이동근(Dong Keun Lee),동석호(Seok Ho Dong),김효종(Hyo Jong Kim),김병호(Byung Ho Kim),이정일(Jung Il Lee),이주희(J 대한소화기학회 2001 대한소화기학회지 Vol.38 No.5

Granulomatous appendiceal disease is uncommon. Since the first report by Meyerding in 1953, about 150 cases of presumed isolated appendiceal Crohn's disease have been documented worldwide. However, none of appendiceal Crohn's disease has been reported in Korea. We experienced 27-year-old woman and 42-year-old man with isolated appendiceal Crohn's disease, which was diagnosed after surgical operation. It was presumed as acute appendicitis with periappendiceal abscess preoperatively. The pathologic finding of appendectomy specimen showed transmural inflammation with giant cell and lymphocyte infiltration, and non-caseous epitheloid granuloma. (Korean J Gastroenterol 2001;38:381-384)

청소년의 물질주의 가치관이 문제행동에 미치는 영향

이건 ( Gun Lee ),계선자 ( Sun-ja Kye ) 한국가족복지학회 2016 한국가족복지학 Vol.21 No.4

This study aims to investigate adolescents` levels of materialistic values and their problem behaviors and to discover the greatest influences on these behaviors. The study was conducted in 2016 using written questionnaires that were completed by 434 adolescents residing in Seoul and Gyeonggi province, South Korea. The data were analyzed using statistical methods such as frequency, percentiles, means, standard deviation, Cronbach`s alpha and hierarchical multiple linear regression analysis, using SPSS 18.0. The analysis results show that the average level of the materialistic values was found to be 2.96 among the respondents, and the average level of their problem behavior was found to be 2.05 out of 5, indicating a relatively rational score. Next, the greatest influential variables of the respondents` problem behaviors were in the order of healthy family factors and parents` rearing methods. And they were sex and then school grade level for the sociodemographic variables. It was concluded that family and a primary environment must accompany communication, affection, and respect-centered family healthiness, along with a multinational effort and approach to form a family-friendly environment as well as healthy family factors as a system for preventing adolescents` problem behaviors.