• Maxillofacial Plastic and Reconstructive Surgery
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• v.13 no.2
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• pp.129-136
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• 1991

The fibrin sealant was first designed as an alternative to surgical suture for the purpose of surface-to-surface union especially in parenchymal organs like the liver, spleen and kidney. The clinical application of currently used fibrin sealant was first introduced in 1972. The fibrin sealant consists of principal two components; lyophilized human fibrinogen and bovine thrombin. The fibrinogen component also contains coagulation factor XIII. A solution of aprotinin, an inhibitor of fibrinolysis is used to dissolve the fibrinogen and to provide the first component, and a solution of calcium chloride is also used to provide the second component. From July to December in 1990, during 6 months, we used fibrin sealant in the 28 patients of 33 various cases, in the following ways; supportive application of fibrin sealant after free autogenouse nerve graft for the repair of inferior alveolar nerve, facial nerve or accessory nerve, treament of hemangioma or lymphangioma to thrombosize and lead to the tumor shrinking, skin grafting to stimulate the adhesion and tissue repair, bone grafting in the patients of cleft alveolus, mandibular reconstruction or orthognathic surgery to facilitate the knitting of bone chips, tissue adhesion after tumor resection, radical neck dissection or flap reconstructions, and supportive adhesion of external auditory cannal after TMJ surgery via postauricular approach. No adverse effects were observed, none of the patients developed hepatitis or other blood transmitted disease, and the wound healing were acceptable.

• Journal of the Economic Geographical Society of Korea
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• v.16 no.2
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• pp.198-217
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• 2013

This research aims to examine the behavior changes of telemedicine participants with regard to time-space reconfiguration and to address the implications of telemedicine in terms of extensibility and restrictions (ambilaterality). According to the results of this research, telemedicine can lead to behavior changes in telemedicine participants, particularly patients. However, it is difficult to anticipate the time-space reconfiguration of telemedicine participants drastically. In other words, although telemedicine minimizes patients' burden of accessibility to and utilization of medical institutions, it requires the patients to visit medical institutions at least once due to the restricted application of telemedicine related to technological problems, the characteristics of medical practice and mutual stakes among the medical institutions involved in telemedicine. And physicians (telemedicine providers as mediators between medical specialists and patients) and medical specialists (as the ultimate telemedicine providers) do not evidence considerable changes in their behaviors, except for offline meetings for information sharing and medical training. Because the present telemedicine system does not require simultaneity between physicians, patients and medical specialists. Furthermore, present telemedicine operation is absorbed into existing medical activities as a health care delivery method. These phenomena are due to 1) the interests among medical institutions and the limitation or generalization of telemedicine technologies to stimulate regional-based telemedicine operation and 2) the goal of face-to-face interactions between patients and doctors, which is to avoid misdiagnosis and side effects. Finally, medical activities related to telemedicine do not differ from general medical activities. The ambilaterality of telemedicine in terms of extensibility and the restriction of time-space reconfiguration is an unsettled problem in the ICT technologies of medical services.

• Journal of the Korean Society of Radiology
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• v.6 no.2
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• pp.83-91
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• 2012

The obesity is a medical condition in which excess body fat has accumulated to the extent. It may have an adverse effect on health, leading to reduced life expectancy and increased health problems such as lifestyle disease, hypertension, and diabetes. Furthermore, it may cause the mental illness such as depression, bipolar disorder, anorexia, hyperphagia, and so on by shrinking psychologically. So, it is regarded as the serious worldwide social problem. Recently, although there are many general obesity care methods with various approaches, these can't be the radical obesity care because of the side effects such as surgery aftereffect, drug addiction, and so on. For these reasons, a methodical approach with a consideration of individual obesity pattern is strongly demanded. In this study, complex obesity care and management system which is overcome the weakness of non-surgical obesity treatment is proposed. And the individually adapted obesity treatment system with the far-infrared therapy module, oxygen therapy module, color therapy module, and microwave therapy module was developed. The complex obesity treatment system which is proposed in this study, could improve the efficiency of treatment by suggesting the various treatment protocols. And proposed system could be the foundation of the high quality obesity treatment system.

• Journal of Chest Surgery
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• v.35 no.5
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• pp.392-396
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• 2002

Background: Video-thoracoscopy is known to be an useful method to provide accurate pre-resectional staging in patients with lung cancer in addition to the conventional radiologic studies and mediastinoscopy, for the pleural cavity is inspected directly and biopsy specimens call be obtained. This study is undertaken to evaluate how video-thoracoscopy can be used in deciding pre-resectional stage Material and Method: Video-thoracoscopy was performed in patients with lung cancer who were scheduled for surgical resection based on the radiologic staging and mediastinoscopic biopsy. 37 patients were included in this study. Pre-thoracoscopically 18 cases were in TNM stage 1, 7 in stage 2, and 12 in stage 3. Result: In 15 of 37 cases, video-thoracoscopy could not be performed effectively due to heavy adhesions in the pleural cavity, diaphragmatic and chest wall invasion of tumor and bulky tumor mass es. Mediastinal lymph nodes were positive postresectionally in 6 of these 15 cases. In 22 cases, video-thoracoscopy was performed as usual. Positive mediastinal lymph nodes were identified in 2 cases and exploratory thoracotomy was prevented. Surgical resection were carried out in remaining 20 cases and 5 cases among them had positive mediastinal lymph nodes. Conclusion: We believe that it is difficult to perform pre-thoracotorny video-thoracoscopy for all lung cancer patients for there were many cases that thoracoscory could not be undertaken doe to heavy adhesions in the pleural cavity, tumor involvement of the chest wall and/or diaphragm and bulky tumor mass. However we think it is helpful in preventing unnecessary exploratory thoracotomy for some patients with lung cancer whom pre-thoracotomy video-thoracoscopy was carried out.

• Clinics in Shoulder and Elbow
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• v.16 no.2
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• pp.135-140
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• 2013

We report a case of recurrent shoulder dislocation and combined proximal humerus fracture in neurofibromatosis type I. A twenty-year-old male patient with known neurofibromatosis type I presented with right shoulder dislocation and proximal humerus fracture following a minor trauma. His injured arm also had large plexiform neurofibromas on the elbow, and the dislocation of the shoulder joint was proven to be recurrent. Bony deformation of the humerus and scapula were revealed on X-ray and computed tomography, as well as multiple neurofibromatic changes of the deltoid and periscapular muscles were noted on magnetic resonance imaging. Open reduction and capsular reconstruction were performed and humeral fracture was stabilized with a reconstruction plate. Satisfactory union and functional result were achieved and the dislocation did not recur until the 7-month followup after the procedure. Recurrent shoulder dislocation and combined proximal humerus fracture in neurofibromatosis type I are rare complications. However, it should still be considered in the orthopaedic evaluation process of the diseases.

• Journal of Gastric Cancer
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• v.6 no.1
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• pp.52-56
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• 2006

A 69-year old man presented with severe epigastric pain for 1 day. He had early gastric cancer at the antrum and underwent a distal subtotal gastrectomy and Billorth II gastrojejunostomy one month later without any post-operative complications. Radiologic examination revealed a large amount of retroperitoneal free air formation. Because of unremitting pain and unstable vital sign, exploratory laparotomy was followed. During the operation, a perforated duodenal diverticulum at the posterior wall of the 2nd portion of the duodenum was identified. He underwent diverticulectomy and primary closure. He was discharged on the 18th post operative day and has been followed up without any evidence of comlpication for several months.

• Journal of Gastric Cancer
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• v.7 no.1
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• pp.47-54
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• 2007

Purpose: To investigate the characteristics and chronological changes of gastric cancer in Korea, the Information Committee of the Korean Gastric Cancer Association performed nationwide survey for 2004. Materials and Methods: The data on patients who underwent gastric cancer surgery in 2004 were collected from 57 institutes and compared with those of 1995 and 1999 which were reported in 2002. Fourteen factors (sex, age, tumor location and size, gross type, approach to operation, radicality, operative method, reconstruction method, WHO and Lauren classification, UICC stage, and numbers of positive and retrieved lymph nodes) were analyzed. According to the annual number of gastric cancer operations, 57 institutes were divided into 4 groups (group 1, <100; 100 ${\leq}$ group 2 < 200 operations; 200 ${\leq}$ group 3 < 500 operations; group 4, ${\geq}500$). Results: Data on 11,293 patients were collected. The sex ratio (M : F) was 2.05 : 1 (7,586/3,705). The mean age was 58.0 years old. The age of highest incidence in both male and female has increased recently. The proportion of early gastric cancer has increased from 28.6% in 1995 and 32.8% in 1999 to 47.4% in 2004. The mean number of retrieved lymph nodes was 34.0 (32.8, 34.0, 36.1, and 32.9 for group 1, 2, 3, and 4 respectively). Conclusion: Early gastric cancer has increased in 2004 compared to 1995 and 1999. Gastric cancer surgery seems to be performed with acceptable quality in view of number of retrieved lymph nodes. These data presented in nationwide survey could be used as a fundamental resource for gastric cancer in Korea.

• Proceedings of the Korea Society for Simulation Conference
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• 1996.05a
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• pp.6-6
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• 1996

컴퓨터 통신망의 활용이 각 분야에서 걸쳐서 점차 확대되고 있으며 의료 분야에서도 원격진료(tele-medicine), 원격교육(tele-education), 원격수술(tele-surgery) 등에 대한 시스템 개발이 관심을 끌고 있다. 본 연구에서는 초고속 정보통신망 환경에서 정형외과 모의수술을 하기 위한 시뮬레이터의 프로토타입을 구현하였다. 원격 모의수술 시뮬레이터를 구축하기 위해서는 CT, MRI와 같은 의학영상 처리, 다지점간의 회의를 제어할 수 있는 통신 제어, 환자의 진료를 위한 멀티미디어 데이터의 저장 및 검색을 위한 데이터베이스 구축 등 다양한 기술들의 총체적인 결합이 요구되어진다. 구축 시뮬레이터는 세가지 주요 서브 시스템으로 구성된다. 첫째, 원격 시뮬레이션을 위한 전반적인 관리, 운영, 제어를 담당하는 수술회의 시스템, 둘째, 모의수술을 가능케 하기 위한 2차원 영상의 전처리 3차원 영상 재구성 및 조작을 통한 모의수술 시스템, 셋재, 멀티미디어 환자 자료의 검색 및 관리를 하기 위한 데이터베이스 운영시스템으로 구성된다. 제안된 원격 모의수술 시뮬레이터는 서버-클라이언트 구조를 기반으로 하고, 여러명의 의사가 공동작업(CSCW: Computer Supported Cooperative Work)에 의해 모의수술을 할 수 있도록 공용 윈도우를 기반으로 한 그래픽 사용자 인터페이스를 제공한다. 멀티미디어 의료 데이터의 전송은 TCP/IP 프로토콜을 사용하고, 사용자 인터페이스는 X-window를 이용하여 구축하였다. 본 시뮬레이터는 SUN Server 1000을 서버로 하고, 두대의 SDT Workstation을 클라이언트로 하여 Ethernet 환경에서 구현 및 검증하였다. 또한 ATM Network에서 본 시뮬레이터를 시험함으로써 국책 사업으로 구축되는 초고속 정보통신망 환경에서의 사용 가능성을 입증하였다. 판단된다.원과 섭식장소, 수중생물의 경우는 특히 수온, 수량 영양원등이다.(중략). 본 연구의 접근방법으로는 ASRS의 개념적인 Reference Model을 수립하고 이 Reference Model에 대한 Formal Model로 DEVS(Discrete Event System Specification)을 이용하여 시스템을 Modeling하였다. 이의 Computer Simulation을 위하여 DEVS형식론 환경에서의 Simulation Language인 DEVSim ++ⓒ를 이용하여 시스템을 구현하였다.. 실형 결과로는 먼저 선형 상미분방정식의 예로 mass-damper-spring system, 비선형 상미분방정식의 예로는 van der Pol 방정식, 연립 상미분방정식의 예로는 mixing tank problem 등을 보였으며, 그의 공학에서 일어나는 여러 가지 문제들도 다루었다.화물에 대한 방어력이 증가되어 나타난 결과로 여겨지며, 또한 혈청중의 ALT, ALP 및 LDH활성을 유의성있게 감소시키므로서 감잎 phenolic compounds가 에탄올에 의한 간세포 손상에 대한 해독 및 보호작용이 있는 것으로 사료된다.반적으로 홍삼 제조시 내공의 발생은 제조공정에서 나타나는 경우가 많으며, 내백의 경우는 홍삼으로 가공되면서 발생하는 경우가 있고, 인삼이 성장될 때 부분적인 영양상태의 불충분이나 기후 등에 따른 영향을 받을 수 있기 때문에 앞으로 이에 대한 많은 연구가 이루어져야할 것으로 판단된다.태에도 불구하고 [-wh]의미의 겹의문사는 병렬적 관계의 합성어가 아니라 내부구조를 지니지 않은 단순한 단어(minimal $X^{0}$ elements)로 가정한다. 즉, [+wh] 의미의 겹의문사는 동일한 구성요 소를 지닌 병렬적 합성어([$[W1]_{XO-}$ $[W1]_{

• The Journal of Korean Academy of Prosthodontics
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• v.57 no.4
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• pp.374-381
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• 2019

A conventional approach for the treatment of long-span edentulous areas is the use of removable dentures. However, placing implants in these areas results in superior functional outcomes by increasing the stability, support, and resistance of the prostheses and improving the masticatory efficiency. Treatment modalities utilizing implants can be further classified into either removable or fixed-type prostheses. Several factors such as the amount of alveolar bone resorption, inter-arch relationship, patient preferences, and socioeconomic status should be considered when determining the appropriate treatment approach. Monolithic zirconia has been considered a suitable material for implant-supported fixed dental prosthesis, because of the drastic improvement in its mechanical properties. It exhibits fewer incidences of fracture and chipping of the prostheses, and has greater bulk of material than metal-ceramic crowns and zirconia-veneered ceramics. Moreover, highly translucent monolithic zirconia is also available in the market, and its application is gradually increasing for anterior tooth rehabilitation. The present report describes a patient who underwent full-mouth rehabilitation with fixed dental prostheses (eight upper and three lower implant placements). All teeth, except bilateral mandibular canines and left mandibular first and second premolars, were extracted after the diagnosis of generalized chronic moderate-to-advanced periodontitis of the remaining teeth. The patient reported satisfactory esthetic and functional outcomes during the one-year follow-up visit.

• Korean Journal of Psychosomatic Medicine
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• v.29 no.2
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• pp.176-183
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• 2021

Objectives : The purpose of this study was to find out how demographic factors, suicide attempt patterns, psychiatric history and management of suicide attempters affect the completion of emergency department (ED) based case management program. Methods : Among the patients who attempted suicide and visited the emergency department of Chung-Ang University Hospital from June 1, 2018 to May 31, 2021, 661 patients who agreed to case management were studied. After being discharged from the emergency department, subjects were registered for an eight-week follow-up service program. Hierarchical logistic regression analysis was conducted with demographic factors, suicide attempt patterns, psychiatric history and management as independent variables, and completion of case management program as dependent variables. Results : Suicide attempt pattern had the most significant influence on the completion of case management program, followed by demographic factors, psychiatric history and management. Those who completed the case management program were significantly more likely to have suicide plans in the future, more authentic in suicide attempts, and had higher proportion of past suicide attempts than those who did not complete the program. Conclusions : To ensure that the subjects complete the follow-up project program and get connected to community services, an individualized approach with consideration of suicide attempt patterns, demographic factors, and psychiatric history is needed.