동맥 색전증의 발병인자

정상영,김신곤,양동호 대한혈관외과학회 1988 Vascular Specialist International Vol.4 No.1

An embolus is a blood clot or other foreign material in a vessel located distal to the place of origin of the clot or foreign material. Arterial embolectomy, designed to restore patency of an acute occluded vessel has great advance since Fogarty balloon catheter was introduced in 1963. At present, in spite of all these advances responsible for the current higher rate of limb salvage, limb loss and mortality rate are still high in a certain group of patient, and concept of arterial embolism and its management are still undergoing changes. Twenty one cases of arterial thromboembolism, which were seen during the periods of 4 years and 7 months from January 1983 to July 1987 at Chonnam National University Hospital, were studied and divided into two groups, good prognosis group and poor prognosis group according to the absence or presence of death and limb loss, and the prognostic factors were evaluated. The results were as follows; 1) The arterial embolism was most frequently seen in 5th decade in good prognosis group (41.6%) and 7th decade in poor prognosis group (44.5%). Male: female ratio were 8:4 in good prognosis group and 8:1 in poor prognosis group. 2) In good prognosis group, no identified diseases were seen in most cases (7 cases: 58.3%) and atherosclerotic heart disease was most common in poor prognosis group (4 cases:44,4%). 3) The most common clinical manifestation was pain in both groups. 4) Time interval from onset of symptoms to treatment; Within 1 day was most common in good prognosis group (5 cases; 41.7%) and over 1 month was most common in poor prognosis group (6 cases: 66.7%). 5) The most common site of embolism was femoral artery in both groups. 6) Operations were done in 15 cases, among them, 9 cases were good prognosis and 6 cases were poor prognosis. Most common anesthesia was local anesthesia in both groups. 7) The operative mortality was 20%.

소아의 Guillain-Barre´ 증후군에 대한 임상적 고찰

정상영,정사준,최용묵,안창열 경희대학교 1989 慶熙醫學 Vol.5 No.3

소아의 간접 서혜부 탈장

정상영,Chung, Sang-Young 대한소아외과학회 2010 소아외과 Vol.16 No.2

Herniorrhaphy of Indirect inguinal hernia (IIH) is one of the most frequently performed surgical procedures in children. The overall incidence of inguinal hernias in childhood ranges from 0.8 to 4.4 %. The incidence is up to 10 times higher in boys than girls, especially much higher in premature infants. IIHs in children are basically an arrest of embryologic development rather than an acquired weakness, which explains the increased incidence in premature infants. In normal development, the processus vaginalis closes, obliterating the peritoneal opening of the internal ring between 36th and 40th week of gestation. This process is often incomplete, leaving a small patent processus in many newborns. However, closure continues postnatally, and the rate of patency is inversely proportional to age of the child. The presence of a patent processus vaginalis is a necessary but not sufficient variable in developing a congenital IIH. In other words, all congenital IIHs are preceded by a patent processus vaginalis, but not all patent processus vaginalis go on to become IIHs. The overall incidence of IIH in population is approximately 1 to 2 % and the incidence of a processus vaginalis is approximately 12 to 14%, clinically appreciable IIH should develop in approximately 8 to 12 % of patients with a patent processus vaginalis. Although the classic open inguinal hernia repair remains the gold standard for most pediatric surgeons, laparoscopic repair is being performed in many centers. Like open technique, laparoscopic technique is fundamentally a high ligation of the indirect hernia sac with or without internal ring ligation. The advantages of laparoscopic approach include the ease of examining the contralateral internal ring, the avoidance of access damage to vas and vessels during mobilization of cord, decreased operative time, and an ability to identify unsuspected direct or femoral hernias. Almost all groin hernias in children are IIHs and occur as a result of incomplete closure of processus vaginalis. The treatment is repair by high ligation of hernia sac, which can be done by an open or laparoscopic technique. The contralateral side can be explored by laparoscopy or left alone, open exploration is no longer indicated due to potential risk of infertility.

BioCLUST 기법을 이용한 무주군 산림 바이오매스의 추정 및 주제도 작성

정상영,임종수,황주호,조현국,신만용 한국임학회 2009 한국임학회 정기학술발표논문집 Vol.2009 No.-

Fluid Care

정상영 대한외과학회 2006 대한외과학회 학술대회 초록집 Vol.2006 No.5

PTFE(Polytetrafluoroethylene)를 이용한 대동맥 재건술

정상영,김신곤,김광현,최수진나,임진채 대한혈관외과학회 1998 Vascular Specialist International Vol.14 No.2

Fifty cases of abdominal aortic reconstruction using PTFE were performed between january 1991 and february 1998 at the Department of Surgery, Chonnam University Hospital. The thirty-five of 50 cases were abdominal aortic aneurysm and the other 15 cases were aortoiliac occlusive disease. Patients were analysed on the basis of sex, age, associated disease, size of aneurysm, operative method, mortality, and cause of death. There were 43 men and 7 women and the mean age was 64.9 years. Hypertension in 24 cases is the most common associated disease, following by ischemic heart disease in 5 cases, COPD in 5 cases. Aorto-bifemoral bypass graft using PTFE was done in 17 cases and aorto-biiliac bypass in 33 cases. The most common complication following surgery was graft occlusion in 6 cases, and other complications were prosthetic infection, postoperative bleeding and ischemic colitis. The cases of death were hypovolemic shock (2), acute renal failure (1), and sepsis (1). There was no evidence of PTFE oriented prosthetic graft complications.

풍동시험 결과 반영 보정 공력을 이용한 경항공기 정적공탄성 해석

정상영,김상호,이재우,전형근,이경빈 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11

탄성구조를 가지는 항공기에 대하여 공력 재분포, 트림 조건, 디이버젼스 등을 포함하는 정적공탄성 해석을 NASTRAN 을 이용하여 수행하였다. NASTRAN 에서의 공력은 앙각(Angle of Attack)에 대하여 선형이기 때문에 붙임각(Incidence Angle), 챔버(Chamber), 날개의 초기 비틀림(Twist) 등이 있는 경항공기에 대하여 공력 하중은 실제하고 차이가 있다. 풍동시험으로 측정한 CL–a 곡선 이용하여 공력을 보정하여 선형 공력 경우와 비교였다. 트림 조건 3.8 g 상향 기동, 피치 0, 피칭 각속도 0 으로 하여 트림 시 앙각과 엘리베이트 변위를 계산하고, 재 분포된 하중에 대하여 구조 변위, 응력, 다이버젼스 속도를 계산하였다. 공력보정 전 후에 대하여 비교할 때, 보정 후 트림상태에서의 앙각이 더 작아졌으며 다이버젼스 속도는 커져 선형공력의 경우가 좀 더 보수적이라는 것을 알 수 있었다. Static aeroelastic analyses such as static load redistribution, trim condition and divergence for elastic aircraft structures were performed with NASTRAN aeroelastic module. Because the air-loads are linear to the angle of attack in NASTRAN, the loads are different if the airplane has an incidence angle, camber or wing twist like KLA-100, Sports Very Light Aircraft. The air loads were corrected using CL – a curve obtained by wind tunnel test. The trim conditions are 3.8 g up maneuver, zero pitch and zero pitching acceleration, and the angle of attack and elevator deflection were calculated at the trim condition and the displacement and stress distributions of the aircraft structures for the redistributed air-loads and the divergence speed were calculated. When comparing for two cases, the angle of attack at the trim condition for air-load correction, become smaller and the divergence speed become larger.

비선형 감쇠진동 반응해석에 의한 항공기 플러터 해석

정상영,한지훈,박용기 한국소음진동공학회 2000 한국소음진동공학회 세미나 Vol.2000 No.10

Synthesis of n-type A-A Conjugated Polymers and Research of Organic Solar Cell Device Properties

정상영,이치형,엄윤지,고두현,우한영 한국고분자학회 2023 한국고분자학회 학술대회 연구논문 초록집 Vol.48 No.1

Jurkat T 세포에 있어서 Mizoribine에 의한 세포고사의 신호전달 기전

정상영,정소환,조진성,서승원,최수진나,김신곤 대한외과학회 2002 대한외과학회 학술대회 초록집 Vol.2002 No.10