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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 ]
Sung Won Kim,Jung Sook Lee,Seung Gyu Park,Han Ju Kang,Yong Soo Kim,Young Dae Yoon,Hoe Song Yang,Han Gi Lee,Sang Soo Kim 국제물리치료학회 2010 Journal of International Academy of Physical Ther Vol.1 No.1
This study was performed to investigate the effects of Needle Electrode Electrical Stimulation(NEES) on ischemia-induced cere˗ brovascular accidents. After obstruction and reperfusion of arteries in white mice, the amounts of necrosis and inflammation related sub˗ stances Bax, IL-6, Caspase-3, and COX-2 were measured in neurons of the fore-brain. The following results were obtained. This study used 21 male specific pathogen free(SPF) SD rats, 8 weeks of age and approximately 300g in weight. Each exposed artery was completely occluded with non-absorbent suture thread and kept in that state for 5 minutes. The sutures were then removed to allow reperfusion of blood. Test group is control group(common carotid artery occlusion models), a GI(underwent common carotid artery occlusion), and NEES(underwent NEES after artery occlusion). The GI and NEES groups were given 12, 24, or 48 hours of reperfusion before NEES. NEES device(PG6, ITO, Japan, 9V, current, 2Hz) was used to stimulate the bilateral acupoint ST36 of the SD rats for 30 minutes while they were sedated with 3% isoflurane. An immuno-his˗ tochemistry test was done on the forebrains of the GI induced rats. Both Bax and Caspase-3 immuno-reactive cells, related to apoptosis, were greater in the GI than the NEES group. Cox-2 and IL-6 immuno-reactive cells, related to inflammation, were greater in the GI and NEES groups than the control group. We can expect that applying NEES after ischemic CVA is effective for preventing brain cells from being destroyed. And we can conclude NEES should be applyed on early stage of ischemic CVA.
A Case of Ibuprofen Induced Transient Platelet Dysfunction in Preterm Infant
( Jung Yoon Cho ),( Jae Hoe Koo ),( Sung-hoon Chung ),( Chong-woo Bae ),( Yong-sung Choi ) 대한주산의학회 2016 大韓周産醫學會雜誌 Vol.27 No.3
Patent ductus arteriosus (PDA) in preterm infant is a common cardiovascular disease that result in hemodynamic disturbance. Ibuprofen treatment is currently being used for PDA closure either intravenously or enterally, and it has been demonstrated that ibuprofen have the same efficacy as indomethacin treatment for PDA closure. We encountered a case of severe gastrointestinal bleeding occurred in the administration of oral ibuprofen for the treatment of PDA in preterm infant. It was diagnosed with a transient platelet dysfunction due to oral ibuprofen treatment by analyzing through the Platelet function analysis (PFA) test. We present this case to emphasize the importance of close follow-up of preterm infant during oral ibuprofen treatment even though good enteral feeding.
Development of Social Map Prototype for Intelligent Crime Prevention based on Geospatial Information
Hoe-Yun Kwon(권회윤),Ki-Sung Song(송기성),Sang-Muk Seok(석상묵),Hyun-Jin Jang(장현진),Jung-Rae Hwang(황정래) 한국컴퓨터정보학회 2016 韓國컴퓨터情報學會論文誌 Vol.21 No.8
In this study, we proposed the social map system prototype for intelligent crime prevention. For developing the social map system prototype, functional requirements were derived through the analysis of related cases and preceding studies. Derived requirements are providing a variety of map-based safety information, using crowdsourcing data such as SNS, connecting to intelligent CCTV. To satisfy these requirements, the prototype is developed with four main menus: the integrated search menu including social media data, the safety map menu providing a variety of safety and danger information, the community map menu to collect safety and danger information from users, and the CCTV menu providing the link to intelligent CCTV. The social map for intelligent crime prevention in this study is expected to greatly enhance the safety of local community with the provision of prompt response to risk information, safe route, etc. through actual service and user participation.
Jung, Sung Hoo,Kim, Dong Hyeon,Brü,ner, Philipp,Lee, Hyeyoun,Hah, Hoe Jin,Kim, Seok Koo,Jung, Yoon Seok Elsevier 2017 ELECTROCHIMICA ACTA Vol.232 No.-
<P><B>Abstract</B></P> <P>An unprecedentedly high electronic conductivity of 0.27Scm<SUP>−1</SUP> is achieved by depositing 0.56wt% crystalline RuO<SUB>2</SUB> on LNMO via a wet-chemical route. Systematic assessment of the electrochemical performance of bare and RuO<SUB>2</SUB>-coated LNMO electrodes unambiguously demonstrates that the high electronic conductivity of RuO<SUB>2</SUB> enables significant enhancement in rate capability. These improvements are dramatic for the electrodes in which extremely low amounts of carbon additives are included and/or the loading amount is high. This finding highlights the importance of electronic conduction in composite electrodes, not only for high power but also for high energy density. The RuO<SUB>2</SUB>-coated LNMO electrode with 1wt% carbon additives exhibits a high capacity of 100mAhg<SUP>−1</SUP> at 1C in the range 3.0–5.0V (vs. Li/Li<SUP>+</SUP>). This result is in sharp contrast to the negligible capacity exhibited by the bare LNMO electrode. In addition, the chemical/electrochemical stability of the RuO<SUB>2</SUB> coating under repeated cycling is confirmed, explaining the observed improvement in durability of the RuO<SUB>2</SUB>-coated LNMO over the bare LNMO.</P> <P><B>Highlights</B></P> <P> <UL> <LI> RuO<SUB>2</SUB> is coated on LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB> (LNMO) particles via a wet chemical route. </LI> <LI> Extremely high conductivity of 0.27S/cm is achieved by coating 0.56wt% RuO<SUB>2</SUB>. </LI> <LI> It is evidenced that high conductivity of RuO<SUB>2</SUB> leads to enhanced rate performance. </LI> <LI> The improvements are dramatic for a thicker electrode with low carbon content. </LI> <LI> Excellent stability of RuO<SUB>2</SUB> that enables improved durability is confirmed. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Extremely conductive RuO<SUB>2</SUB>-coated LiNi<SUB>0.5</SUB>Mn<SUB>1.5</SUB>O<SUB>4</SUB> (0.27S/cm, 0.57wt%) enables high rate capability for thicker electrode with less amount of carbon with improved durability.</P> <P>[DISPLAY OMISSION]</P>