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Atrial fibrillation in acute myocardial infarction
( Seung Wook Bak ),( Jin Woo Park ),( Seung Jin Jun ),( Yohan Ku ),( Won Yu Kang ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.1
Background: Atrial fibrillation (AF) is the most commonly encountered clinical arrhythmia. However, The impact of AF in acute myocardial infarction (AMI) on future major cardiac adverse events is uncertain in Korean population. Methods: Between November 2005 and November 2007, 12,928 patients were registered in the Korean Acute Myocardial Infarction Registry (KAMIR). Patients were divided into 2 groups according to presence of AF: Group I (who had not AF, n=12,350) and Group II (who had AF, n=578). In-hospital mortality, mortality in 1 year, and overall mortality were compared between groups. Also, we examined independent predictors for mortality in AF groups. Results: The incidence of AF in AMI was 4.7%. AF group was significantly older (Group I: 62.5±12.7, Group II: 68.5±11.6, p<0.001) and more likely to have lower systolic blood pressure (Group I: 130.0±30.2, Group II: 122.1±31.7, p<0.001) and lower ejection fraction (Group I: 51.7±12.6, Group II: 48.7±13.1, p<0.001). There was no significant statistical differences in the prevalence of diabetes, hypertension, dyslipidemia, and angiographic findings (p>0.05). There was significant difference in failure rate in percutaneous coronary intervention (1.6% vs. 3.8%, p=0.004), In-hospital mortality (4.2% vs 10.8%, p<0.001), mortality in 12 months (4.8% vs 9.7%, p=0.002), and overall mortality (12.1% vs. 27.8%, p<0.001). However, AF was not a independent predictors in overall mortality. In multivaritate analysis, age (OR 1.094, CI: 1.047~1.142, p<0.001), blood pressure (OR 0.979, CI: 0.964~0.994), left ventricular ejection fraction (OR 0.931, CI: 0.900~0.965, p<0.001), percutaneous coronary intervention (OR 2.409, CI: 1.036~5.60, p=0.041) were independent predictors for overall mortality in AF with AMI patients. Conclusion: Although has poor prognosis, AF in AMI is not a independent predictor for mortality. Age, blood pressure, left ventricular ejection fraction, percutaneous coronary intervention are independant predictors in AF with AMI patients.
다중 디스크립션 비디오 스트리밍을 위한 협업 프록시 구조 설계
이승은(Seung-eun Lee),한종욱(Jong-wook Han),한동윤(Dong-yun Han),박유현(Yuhyeon Bak),김경석(Kyong-sok Kim) 한국정보과학회 2006 한국정보과학회 학술발표논문집 Vol.33 No.2D
최근 많은 사용자들이 인터넷 상에서 비디오나 오디오 같은 규모가 큰 미디어 콘텐츠(Media contents)의 정보 전달을 효율적으로 제공 받기를 원하고 있다. 미디어 콘텐츠를 스트리밍 하는 것은 인터넷 트래픽의 아주 큰 부분을 차지하기 때문에, 우리는 클러스터형 협업 프록시를 기반으로 한 다중 디스크립션비디오 스트리밍 구조를 제안하여 네트워크와 서버의 부하를 클러스터된 일반 프록시들에게 균등하게 분산 시킨다. MDC(Multiple Description Coding)[1]를 적용하여 캐싱 공간(Caching space)을 효율적으로 사용하며 다중 세션을 통해 디스크립션을 서비스함으로써 스트리밍 서비스 중인 프록시 또는 전체 데이터를 저장하고 하는 서버에 문제가 생기더라도 끊어지지 않는 계속적인 서비스가 가능하다. 또한 일반 프록시들의 정보를 관리하는 디스패처가 사용자의 환경에 따라 적응적인 서비스를 가능하게 한다.
이승훈 ( Seung Hun Lee ),장영운 ( Young Woon Chang ),백선경 ( Sun Kyung Bak ),한주영 ( Joo Young Han ),김장하 ( Jang Ha Kim ),정용희 ( Yong Hee Jung ),이병욱 ( Byoung Wook Lee ),한요셉 ( Yo Seb Han ),동석호 ( Seok Ho Dong ),김효종 대한소화기학회 2003 대한소화기학회지 Vol.41 No.1
Intestinal lymphangiectasia is a disorder of small intestinal lymphatic channel. It is manifested with dilatation of intestinal lymphatics and leakage from ruptured lacteals to the intestinal lumen. Since such leakage contains plasma protein, chylomicron, and small lymphocytes, the intestinal lymphangiectasia is characterized by the loss of serum protein and lymphocytes, resulting in hypoproteinemia, edema, and lymphocytopenia. Recently, we experienced a malnourished 30-year-old male patient with generalized weakness and fever. He was diagnosed as having duodenal lymphangiectasia arising from the second portion of the duodenum by an upper gastrointestinal endoscopy. The endoscopic biopsy showed dilatation of mucosal lymphatics. (Korean J Gastroenterol 2003;41:59-63)
양동훈 ( Dong Hoon Yang ),박상욱 ( Sang Wook Park ),문형철 ( Hyeung Chul Moon ),유경완 ( Kyoung Wan You ),은서준 ( Seo Joon Eun ),문승기 ( Seung Ki Moon ),박철민 ( Choel Min Bak ),조신형 ( Shin Hyoung Jo ) 대한췌담도학회 2016 대한췌담도학회지 Vol.21 No.4
총담관의 자발적 천공은 흔하지 않으며, 이에 대해 충분한 연구와 경험이 부족한 상태이다. 본 저자들은 원인을 알 수없는 복통과 난치성 복수를 호소하는 환자에서 총담관의 자발적 천공을 진단하고, 내시경역행담췌관조영술을 통한 완전피막형 자가팽창형 금속스텐트의 삽입술과 보존적 치료를 통하여 치료에 성공했던 증례를 경험하였기에 보고한다. Perforation of the biliary tree mostly results from injury to the bile duct during surgery or procedures such as endoscopic retrograde cholangiopancreatography (ERCP) and spontaneous bile duct perforation is rare in adults. As the clinical picture varies, early diagnosis and treatment of spontaneous biliary peritonitis is difficult. A 52-year-old male patient presented with abdominal pain and intractable ascites. He already experienced severe abdominal pain 2 months ago and underwent percutaneous pigtail drainage for the ascites at nearby hospital. ERCP showed large filling defect with leakage of contrast media from the mid common bile duct (CBD) into the peritoneal cavity. We performed endoscopic sphincterotomy and extracted CBD stones with basket and balloon catheter. Then fully covered self expandable metal stent was placed in CBD. After the procedure, the symptom was improved and the amount of pigtail drainage from abdominal cavity was dramatically decreased. 6 weeks later, removing the metal stent, there was no more leakage of contrast media into peritoneal cavity. We report a very rare case of spontaneous bile leakage which was successfully managed with placement of metal stent.
CASE REPORT : A Case of Primary Intestinal Lymphangiectasia Diagnosed by Double Balloon Enteroscopy
( Jung Min Lee ),( Jong Bum Kim ),( Seung Wook Bak ),( Bong Kyu Lee ),( Nam Hun Lee ),( Young Ho Seo ) 대한장연구학회 2013 Intestinal Research Vol.11 No.1
Primary intestinal lymphangiectasia is a congenital lymphatic disorder characterized by dilated intestinal lacteals resulting in lymph leakage into the small bowel lumen and responsible for protein losing enteropathy. As a result, generalized edema, hypoalbuminemia, and lymphocytopenia are clinically manifested. We could not find the reason by several examinations. Therefore, we performed double balloon enteroscopy (DBE), and intestnal lymphangiectasia was diagnosed histologically by a biopsy. DBE is a safe and effective method to diagnose small bowel lymphangiectasia. We report a case of primary intestinal lymphangiectasia, which occurred in a 54-year-old male patient with generalized edema and ascites. (Intest Res 2013;11:66-70)