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김신곤,김동의,배문오,정상영 대한혈관외과학회 1994 Vascular Specialist International Vol.10 No.1
Eighteen cases of abdominal aortic aneurysms(AAA) were surgically treated between May 1991 and April 1994 at the Department of Surgery, Chonnam University Hospital. Patients were devided into elective and emergency cases and analysed on the basis of sex, age, chief complaints, associated diseases, size of aneurysm, operating time, mortality and cause of death. Initial presentation was usually abdominal or back pain in elective cases but palpable mass and abdominal distension in emergency cases. Hypertension was the most common associated disease(67%). Ten of 11 emergency cases were ruptured. There was no positive relationship between the size of AAA and the incidency of the rupture. There was no death in elective cases, but 7 ruptured AAAs were died in l 1 emergency cases (63.6%). Overall surgical mortality was 38.9%. The causes of death were acute renal failure(2), myocardial infarction(2), postoperative bleeding(2), and sepsis(1). For AAAs, surgical intervention is recommended and operation must be performed before rupture regardless of the size.
정상영,김신곤,배문오 대한혈관외과학회 1995 Vascular Specialist International Vol.11 No.2
Arteriovenous malformation(AVM) of the female pelvis is a rare but occasionally leads to life-threatening complications such as massive bleeding due to wrong diagnostic or therapeutic interventions. It is congenital or acquired and may be associated with trophoblastic disease or previous surgery or maternal diethylstilbestro1(DES) exposure. It may be asymptomatic or have several symptoms such as hyperdynamic circulation, cardiomegaly, pain and uterine bleeding. Diagnosis of this rare conditon requires a high degree of awareness. When AVM is suspected, a biopsy or curettage is contraindicated because of risk of massive hemorrhage. Doppler, real time ultrasound, CT and MRI are helpful and angiography is diagnostic. Transcatheter embolization of involved vessels is the treatment of choice in the majority of AVMs. Ligation of multiple feeding vessels, hysterectomy and excision of the AVMs are recommended for inadequate embolization. This is a clinical case report of pelvic AVM caused by trophoblastic disease in a 32-year-old woman.
정상영,최수진나,이순천,배문오,김신곤 대한혈관외과학회 2000 Vascular Specialist International Vol.16 No.1
Purpose: The major source of acute peripheral arterial occlusion has been embolization hom the heart. However overall improvement in medical care have increased life spans, resulting in significant increase in the incidence of systemic atherasclerosis and thrombotic occlusion of peripheral vessels. Recently, occlusion from in situ thrombosis has surpassed occlusion from embolization as the major cause of acute arterial occlusion. The introduction of the balloon catheter technique in 1963 dramatically simplified the technical aspect of surgical therapy for acute arterial occlusion and it became the main modality of the therapy. Recently, numerous reports have documented increased identification of intralutninal defects after arterial surgery using angioscopy as compared with those using intraoperative arteriography, and for this reason, the use of intraluminal angioscopy has grown in popularity. Methods: We analyzed clinical characteristics and treatment results in patients with acute arterial occlusion. The variables studied include location, etiology, time interval from occurrence of occlusion to performance of thromboembolectomy. Results: There were 41 men and 4 women and most prevalent nge group was in 7th decades. The causes of acute arterial occlusion were embolism in 21 cases (46.7%), thrombosis in 24 cases (53.3%), The primary source of embolism was heart in 20 cases as a result of ischemic heart disease (n-ll, 52.4%) and atrial fibrillation (n 9, 42.9%). Two patients in embolic group died of cardiogenic shock and were in shorter duration group ($lt;24 hours). Iliac arterial occlusion group was associated with highest amputation rate (23.1%). Amputation rates were 12.5% for thromboembolectomy perfonned within 24 hours of onset of symptoms, and 17.4% when performed after 48 hours. We used angioscopic teclmique in limited cases of 5 patients to detect residual thrombus, intimal flap and other intraluminal defects. Conclusion: To improve outcome, early diagnosis and early treatment are essential. Direct visualization of the arterial lumen with angioscopy during thromboembolectomy procedure would provide a more reliable method of assessing luminal morphologic characteristics than angiography alone.
내부구조물을 이용한 필터의 효율 및 수명 상승에 대한 연구
김지훈(Ji-Hun Kim),윤상우(Sangwoo Yoon),권성호(Sung-Ho Kwon),성수환(Su-Hwan Sung),배문오(Mun-Oh Bae),김주한(Joohan Kim) 한국기계가공학회 2018 한국기계가공학회지 Vol.17 No.5
To improve the efficiency and lifetime of filters, we analyze the element distribution at the entrance and exit by using the flow inside a filter, confirming that the internal structure affects the filter efficiency. The flow in the pipe is predicted through computer simulations, and the filtration efficiency of each element is compared through experiments. The efficiency and lifetime of the filter are indirectly improved through the element distribution at the filter outlet according to the internal structure. Because pressure loss from the structure inevitably occurs, the efficiency and lifetime of filters against pressure loss must be considered.