http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Lee Sang Hyub,Choe Jung Wan,Cheon Young Koog,Choi Miyoung,Jung Min Kyu,Jang Dong Kee,Jo Jung Hyun,Lee Jae Min,Kim Eui Joo,Han Sung Yong,Choi Young Hoon,Seo Hyung-Il,Lee Dong Ho,Lee Hong Sik 거트앤리버 소화기연관학회협의회 2023 Gut and Liver Vol.17 No.1
Acute pancreatitis can range from a mild, self-limiting disease requiring no more than supportive care, to severe disease with life-threatening complications. With the goal of providing a recommendation framework for clinicians to manage acute pancreatitis, and to contribute to improvements in national health care, the Korean Pancreatobiliary Association (KPBA) established the Korean guidelines for acute pancreatitis management in 2013. However, many challenging issues exist which often lead to differences in clinical practices. In addition, with newly obtained evidence regarding acute pancreatitis, there have been great changes in recent knowledge and information regarding this disorder. Therefore, the KPBA committee underwent an extensive revision of the guidelines. The revised guidelines were developed using the Delphi method, and the main topics of the guidelines include the following: diagnosis, severity assessment, initial treatment, nutritional support, convalescent treatment, and the treatment of local complications and necrotizing pancreatitis. Specific recommendations are presented, along with the evidence levels and recommendation grades.
Sang Hyub Lee,이철희,박인성,한종우 대한뇌혈관외과학회 2018 Journal of Cerebrovascular and Endovascular Neuros Vol.20 No.1
A 50-year-old woman reported to the emergency department with thunderclap headache and vomiting. Non-enhanced brain computed tomography (CT) showed a subarachnoid hemorrhage of Hunt-Hess Grade II and Fisher Grade III. Brain angiography CT and transfemoral cerebral angiography (TFCA) revealed an aneurysm of the anterior communicating artery. A direct neck clipping was performed using the pterional approach. The post-operation CT was uneventful. Six days postoperatively, the patient became lethargic. The mean velocity (cm/s) of the middle cerebral artery peaked at 173 cm/s on the right side and 167 cm/s on the left. A TFCA revealed decreased perfusion in both recurrent arteries of Heubner (RAH), but no occlusion in either. Intra-arterial nimodipine injection was administered. On the 7th postoperative day, CT demonstrated a newly developed low-density lesion in the RAH territory bilaterally. The cause of the infarction was attributed to decreased perfusion caused by cerebral vasospasm. The patient was discharged with no definite neurologic deficit except for mild cognitive disorder.
Sang Hyub Lee,박인성,이자명,이광호,Hyun Park,이철희 대한뇌혈관외과학회 2018 Journal of Cerebrovascular and Endovascular Neuros Vol.20 No.1
Objective : The aim of this study was to evaluate the safety and efficacy of stent-assisted coil embolization using only a glycoprotein IIb/IIIa inhibitor (tirofiban). Materials and Methods : We retrospectively reviewed patients with a subarachnoid hemorrhage due to ruptured wide-necked intracranial aneurysms who were treated by stent-assisted coil embolization. In all patients, the glycoprotein IIb/IIIa inhibitor tirofiban was administered just before stent deployment. Electronic medical records for these patients were reviewed for peri-procedural complications and extra-ventricular drainage catheter related hemorrhage, as well as Glasgow outcome scale (GOS) at discharge, 3 months, and 6 months follow-up were recorded. Results : Fifty-one aneurysms in 50 patients were treated. The mean patient age was 64.9 years. Eighteen patients (36%) received a World Federation of Neurosurgical Societies grade of 4 or 5. The mean aneurysm size was 9.48 mm and mean dome-to-neck ratio was 1.06. No intraoperative aneurysm ruptures occurred, although five (10%) episodes of asymptomatic stent thrombosis did occur. Three patients experienced a delayed thrombo-embolic event and two a delayed hemorrhagic event. Immediate radiologic assessment indicated a complete occlusion in 29 patients, a residual neck in 19, and a residual sac in 3. Four patients (8%) died. Sixteen patients (32%) experienced a poor GOS (< 4). Two aneurysms were recanalized during the follow-up period (mean, 19 months for clinical and 18 months for angiographic follow-up). Conclusion : Treatment of ruptured wide-necked intracranial aneurysms via stent-assisted coil embolization with a glycoprotein IIb/IIIa inhibitor alone was found to be relatively safe and efficient.
Coercivity Enhancement of Nd-Fe-B Powders via Grain Boundary Diffusion with a Tb/Cu Mixture
Sang-Hyub Lee,Yang-Do Kim,Dong-Hwan Kim 한국자기학회 2024 Journal of Magnetics Vol.29 No.1
We investigated the changes in the microstructures and magnetic properties of a grain boundary diffusion-processed (GBDP) anisotropic Nd-Fe-B powder. The powder was obtained via hydrogenation decomposition desorption recombination (HDDR) and diffused with heavy rare-earth elements (HREs), such as Dy and Tb fluorides, as well as metallic powders. The HREs diffused through the grain boundaries into the HDDR powder and were found primarily in the RE-rich triple junction regions. The HREs in the RE-rich regions formed the main phase (Nd₂Fe₁₄B), followed by a high-coercivity (Nd+Tb)₂Fe₁₄B shell. We also studied the GBDP powder with Tb and low-melting temperature elements such as Cu and Al. The addition of Cu to the GBDP source effectively improved the grain boundary structure and diffusion depth. The magnetic properties changed from remanence and coercivity of 12.5 kG and 15.7 kOe to 12.3 kG and 23.9 kOe, respectively, for GBD by Tb and Cu mixtures.