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( Hoe Jeong Chung ),( Seong-yup Kim ),( Chun Sung Byun ),( Ki-youn Kwon ),( Pil Young Jung ) 대한외상학회 2016 大韓外傷學會誌 Vol.29 No.4
For an orthopaedic surgeon, the critical decisions to either amputate or salvage a limb with severe crushing injury with progressive ischemic change due to arterial rupture or occlusion can become a clinical dilemma at the Emergency Department (ED). And reperfusion injury is one of the fetal complications after vascular reconstruction. The authors present a case which was able to save patient`s life by rapid vessel ligation at bedside to prevent severe reperfusion injury. A 43-year-old male patient with no pre-existing medical conditions was transported by helicopter to Level I trauma center from incident scene. Initial result of extended focused assessment with sonography for trauma (eFAST) was negative. The trauma series X-rays at the trauma bay of ED showed a multiple contiguous rib fractures with hemothorax and his pelvic radiograph revealed a complex pelvic trauma of an Anterior Posterior Compression (APC) Type II. Lower extremity computed tomography showed a discontinuity in common femoral artery at the fracture site and no distal run off. Surgical finding revealed a complete rupture of common femoral artery and vein around the fracture site. But due to the age aspect of the patient, the operating team decided a vascular repair rather than amputation even if the anticipated reperfusion time was 7 hours from the onset of trauma. Only two hours after the reperfusion, the patient was in a state of shock when his arterial blood gas analysis (ABGA) showed a drop of pH from 7.32 to 7.18. An imminent bedside procedure of aseptic opening the surgical site and clamping the anastomosis site was taken place rather than undergoing a surgery of amputation because of ultimately unstable vital sign. The authors would like to emphasize the importance of rapid decision making and prompt vessel ligation which supply blood flow to the ischemic limb to increase the survival rate in case of profound reperfusion injury. [ J Trauma Inj 2016; 29: 204-208 ]
Surgery versus Locoregional Treatment in BCLC Stage 0 HCC Patients
( Jung Mi Chang ),( Soon Ho Um ),( Tae Hyung Kim ),( Han Ah Lee ),( Dae Hoe Gu ),( Jem Ma Ahn ),( Yeon Seok Seo ),( Hyung Joon Yim ),( Yoon Tae Jeen ),( Hong Sik Lee ),( Hoon Jai Chun ),( Chang Duck K 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: The aim of this study is to compare the outcome between surgical treatment and locoregional treatment in very early stage hepatocellular carcinoma(BCLC stage 0) patients retrospectively. Methods: The survival rates of hepatocellular carcinoma patients who were newly diagnosed at Korea University Anam Hospital from March 2004 to December 2015 and whose liver function was Child-Pugh grade A and BCLC 0 (n =203) were compared according the treatment methods. In the surgical group (n=54), all patients underwent partial hepatectomy, and in the locoregional treatment group (n=149), patients who underwent TACE, RFA/PEI, and both TACE and RFA/PEI were included. Kaplan-Meier method, log-rank test and univariate multivariate Cox regression analysis were used for statistical analysis. Results: The median age of all patients was 60 years and male accounted for 70.9%. In the univariate analysis, the median survival time of the surgical group was 4345 days(95% CI 1000~7689) and the median survival time of the non-surgical group was 2923 days (95% CI 2395 ~ 3450).The survival time of the surgical group was longer than that of the non-surgical group, but the difference in survival rates between the two groups was not significant (log-rank P = 0.121). The cumulative survival rates of the surgical group in year 1, 3, 5, 7, 9 were 98%, 88.8%, 75.1%, 69.7%, and 69.7%, respectively, and the rates of the non-surgical group were 96.6%, 82.7%, 73.5%, 57.8% and 44.6%, respectively. On the other hand, age, albumin and MELD score were significantly correlated with patient survival (P<0.005) and the surgical group was younger and had higher albumin level and lower MELD score at baseline (P<0.05). The difference in survival rates between the two groups was not significant when these factors were adjusted in multivariate analysis.(P=0.738, HR 1.130, 95% CI 0.552-2.315) Conclusions: In patients with HCC of the very early stage of BCLC, there was no significant difference in survival rates statistically between the surgical and non-surgical groups.
( Jung Mi Chang ),( Soon Ho Um ),( Tae Hyung Kim ),( Han Ah Lee ),( Dae Hoe Gu ),( Jem Ma Ahn ),( Yeon Seok Seo ),( Hyung Joon Yim ),( Yoon Tae Jeen ),( Hong Sik Lee ),( Hoon Jai Chun ),( Chang Duck K 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: The aim of this study is to compare the outcome between surgical treatment and local regional treatment in early stage hepatocellular carcinoma(BCLC stage A) patients retrospectively. Methods: The survival rates of hepatocellular carcinoma patients who were newly diagnosed at Korea University Anam Hospital from March 2004 to December 2015 and whose liver function was Child-Pugh grade A and BCLC A (n = 306) were compared according the treatment methods. In the surgical group (n=118), all patients underwent partial hepatectomy, and in the locoregional treatment group (n=188), patients who underwent TACE, RFA/PEI, and both TACE and RFA/PEI were included. Kaplan-Meier method, log-rank test and univariate multivariate Cox regression analysis were used for statistical analysis. Results: The median age of all patients was 60.3 years and male accounted for 76.1%. %. In the univariate analysis, the cumulative survival rates of the surgical group in year 1, 3, 5, 7, 9 were 94.8%, 83.5%, 77.3%, 66.7%, and 60%, respectively, and the rates of the non-surgical group were 93.2%, 76.1%, 57.3%, 48.7%, and 34.8%, respectively. The survival rates of both groups were significantly different. (log-rank P = 0.002). But the difference in survival rates between the two groups was not significant (P = 0.159) when the factors significantly correlated with patient survival (age, albumin, bilirubin, INR and MELD score) were adjusted in multivariate analysis. So subgroup analysis based on size and number of tumors were performed. In a single mass subgroup (n=209), univariate analysis showed a significant difference in the survival rates between the surgical group and the non-surgical group when the tumor size was less than 5cm, but multivariate analysis did not show the difference. However, there was a significant difference in the survival rates between the surgical group and the non-surgical group when the tumor size was bigger than 5cm (n=37), and multivariate analysis did show the difference after adjusting for age, albumin, bilirubin, INR, and MELD score as well.(P=0.001). In the subgroup with multiple (2-3) unilobar mass (≦3cm), there were no difference between the survival rates of the surgical group and non-surgical group and not even after adjustment of previously mentioned factors (p>0.05). Conclusions: In patients with HCC of BCLC stage A, surgery had better survival benefits over non-surgical treatment if the number of tumor was one and the tumor was larger than 5 cm.
김회천(Hoe-Chun Kim),정태욱(Tea-Uk jung),김태현(Tae-Hyun Kim),안현근(Hyon-Geun An) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
본 논문은 현재 사용되는 가정용 또는 사무실용 조명제어기의 단순한 전기접점 방식의 온/오프 스위치를 지능형 전원회로로 지능형 조명제어가 가능하게 개발하였다. 기존의 지능형 스위치는 제어를 위해 D+, D-, GND로 구성되어 신규주택만 사용가능 하며, 기존주택에 사용할 수 없었다. 이를 기존주택에도 사용할 수 있게 연구하였으며, 최근 거주 공간의 안락함과 심미적인 부분을 추구하는 성향이 높아짐에 따라 햅틱 기능을 갖는 진동 터치판넬(Touch panel) 온/오프 스위치와 LED 조명을 이용한 무드라이트를 제어할 수 있게 하였다.
Yang, Hoe-Chang,Lee, Chun-Ho,Kim, Jung-Ho East Asia Business Economics Association 2017 East asian journal of business management Vol.5 No.2
This study attempts to verify effects of CEO' supports, compensation and educational training and those of individual annual salaries and company's sales on promotion of knowledge management expected to contribute to enhancing construction industry's competitiveness, from the perspective of person-organization fit. For the analysis, a total of 368 effective questionnaires were used to conduct independent sample t-test, regression analysis and hierarchical moderated regression analysis. The findings show that individual annual salaries have a positive relationship with company's performance and company's sales also have positive relationships with both knowledge management activities and company performance, and CEO's supports, compensation and educational training are important factors that can improve knowledge management activities. In addition, the principle that the rich get richer and the poor get poorer is also operated in construction industry, as in other industries. Therefore, members in a company should conduct optimal strategies to enhance the knowledge management activities through selection and concentration, while governmental agencies require the establishment of IT system for it and supports for related cost and consulting of it.