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고기영,성규보,윤현기,Go, Gi-Yeong,Seong, Gyu-Bo,Yun, Hyeon-Gi 대한영상의학회 2003 대한영상의학회지 Vol.48 No.6
목적: 산욕기 출혈을 치료하는 데 있어서 동맥색전술의 효용성과 안전성을 평가하고자 하였다. 대상과 방법: 고식적 치료로 지혈되지 않는 500 ml 이상의 산후 출혈로 인하여 동맥색전술을 시행받은 25명의 환자들을 대상으로 하였다.우측 대퇴동맥을 천자하여 양측 내장골동맥 조영술을 시행하여 출혈동맥을 색전한 후 측부혈류에 의한 재출혈을 방지하기 위하여 반대측 내장골동맥의 전방구역 또는 자궁동맥을 추가로 색전하였다. 출혈동맥이 보이지 않은 경우에도 제왕절개술 후의 출혈인 경우 양측 내장골동맥의 전방구역을, 그 외의 경우에는 양측 자궁동맥을 색전하였다. 사용한 색전물질은 코일, 젤폼 또는 폴리비닐알콜 입자 등이었다. 시술 후 질 출혈의 지속 여부,합병증 등을 후향적으로 분석하였다. 결과: 혈관조영술 상 출혈 부위가 확인된 경우는 13예(52%)였으며, 출혈 동맥은 일측 (n=10) 또는 양측 (n=2)자궁동맥, 일측 질동맥 (n=1)이었다. 색전술 후 12명(92%)은 질 출혈이 소실되고 회복되었으나, 1명은 질 출혈이 지속되어 자궁적출술을 시행받았다. 혈관조영술 상 출혈 부위를 찾을 수 없었던 경우는 12예(48%)였으며 색전술 후 11명(92%)은 회복되었으나, 1명은 패혈증이 악화되어 사망하였다.2명에서는 각각 색전술 12, 13일 후 재출혈이 발생하여 자궁절제술을 시행받았다. 결론: 동맥색전술은 고식적 치료로서 지혈되지 않는 산욕기 출혈의 치료방법으로서 효과적이고 안전한 치료방법으로 사료된다. Purpose: To assess the effectiveness and safety of transcatheter arterial embolization for the treatment of massive postpartum bleeding. Materials and Methods: Transcatheter arterial embolization was attempted in 25 patients with massive postpartum bleeding. After identification at bilateral internal iliac arteriography, the bleeding artery was embolized using gelfoam, polyvinyl alcohol particles or microcoils, and to prevent rebleeding through collateral pathways, the contralateral uterine artery or anterior division of the internal iliac artery was also embolized. Clinical success and complications were retrospectively assessed and documented. Results: Active bleeding foci were detected in 13 patients (52%), and involved the unilateral (n=10) or bilateral (n=2) uterine artery and unilateral vaginal artery (n=1). Twelve (92%) of the 13 patients recovered completely following embolization, but one underwent hysterectomy due to persistent bleeding. The focus of bleeding was not detected in 12 patients (48%), but 11 (92%) of these also recovered following embolization of the bilateral uterine or internal iliac arteries. One patient, however, died due to sepsis. Two of the 12 patients underwent hysterectomy due to rebleeding on the 12th and 13th day, respectively, after embolization. Conclusion: Transcatheter arterial embolization is relatively safe and effective for the treatment massive postpartum bleeding.
Al-Ce 산화물에 담지된 CuO 촉매상에서 저온 CO산화반응
박정현 ( Jung-hyun Park ),윤현기 ( Hyun Ki Yun ),신채호 ( Chae-ho Shin ) 한국화학공학회 2017 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.55 No.2
CuO(x)/0.3Al-0.7Ce catalysts with different CuO loadings (x = 2~20 wt%) were prepared by impregnation method and investigated the effects of CuO loadings on the low temperature CO oxidation. Of the used catalysts, the CuO(10)/0.3Al-0.7Ce catalyst showed the highest catalytic performance in the absence or presence of water vapor. In the presence of water vapor, the catalytic performance was drastically decreased, with a temperature of 50% CO conversion (T<sub>50%</sub>) shifted to higher temperature by 50 ℃ compared to the those in dry conditions because of the competitive adsorption of water vapor on the active sites. The copper metal surface area calculated from N<sub>2</sub>O-titration analysis and the oxygen capacity from CO-pulse experiments were increased with the CuO loadings and showed a maximum at 10 wt%CuO/0.3Al-0.7Ce catalyst. These trends are in good agreement with the tendency of T<sub>50%</sub> of the catalysts. From these characteristic aspects, it could be deduced that the catalytic performance was closely related to the oxygen capacity and the copper metallic surface area.
박정수(Jeong Soo Park),김주년(Junyun Kim),민정웅(Jung Ung Min),윤현기(Hyun-gee Yun) 한국SCM학회 2015 한국SCM학회지 Vol.15 No.1
During the past 10 years of the import liberalization of beef in Korea, it is relatively difficult to find researches for the import beef supply chain. The goal of this research is to provide a conceptual framework for the market behavior and individual purchasing behavior in the import beef supply chain in Korea. Based on a literature review and experts interviews, market behavior of the import beef supply chain will be constructed and simulated by system dynamics method. On top of that, the purchasing behavior of individual importer is described by game theory. With the results of the system dynamics modeling for the import beef supply chain in Korea, a market behavior can be explained and further used to forecast the anticipated supply. Also, each importer°Øs purchasing behavior is characterized and can be explained dynamically. With the results of individual model, an optional decision can be used to leverage the financial performance and to diminish the risk of market failure. The results of this paper can be applied to packers, importers and supply chain financing actors.
대동맥 벽내혈종에서 발생한 국소 대동맥 박리증 치료를 위한 Stent-graft 삽입
이명준 ( Myung Zoon Yi ),안정민 ( Jung Min An ),한송이 ( Song Yi Han ),강덕현 ( Duk Hyun Kang ),윤현기 ( Hyun Gi Yun ),송재관 ( Jae Kwan Song ) 대한내과학회 2006 대한내과학회지 Vol.71 No.2
Aortic intramural hematoma, a variant form of classic aortic dissection, has been accepted as an increasingly recognized and potentially fatal entity of acute aortic syndrome. Although favorable clinical course and resorption of hematoma has been reported with medical treatment, it can progress to development of typical aortic dissection in a localized aortic segment. The standard treatment option for this lesion has not been established. We report a case of a 50 year-old male who developed localized aortic dissection during medical treatment for distal aortic intramural hematoma and was successfully treated with a stent-graft.(Korean J Med 71:203-207, 2006)
대한간학회지 제6차 춘계학술대회 초록집 : 구연 ; 진행성 간암에서 chemoport를 통한 간동맥 내 cisplatin 및 5-fluorouracil 화학요법의 효과
송희곤 ( Song Hui Gon ),이한주 ( Lee Han Ju ),이상수 ( Lee Sang Su ),송병철 ( Song Byeong Cheol ),정영화 ( Jeong Yeong Hwa ),이영상 ( Lee Yeong Sang ),윤현기 ( Yun Hyeon Gi ),성규보 ( Seong Gyu Bo ),서동진 ( Seo Dong Jin ) 대한간학회 2000 Clinical and Molecular Hepatology(대한간학회지) Vol.6 No.1(S)