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Byung Rhae Yoo,Chan Jong Yoo,김명진,김우경,Dae Han Choi 대한뇌혈관외과학회 2016 Journal of Cerebrovascular and Endovascular Neuros Vol.18 No.3
Objective : We compared the effect of decompressive craniectomy between patients < 65 and ≥ 65 years age and investigated prognostics factors that may help predict favorable outcome in acute stroke patients undergoing decompressive surgery. Materials and Methods : 52 patients diagnosed with acute middle cerebral artery (MCA) territory infarction that underwent decompressive craniectomy were retrospectively reviewed. The outcome of all patients were evaluated by assessing the Glasgow coma scale, Glasgow outcome scale (GOS), and Modified Rankin scale (mRS) six months after the onset of the disease. 21 patients were preoperatively evaluated with a computed tomography angiography (CTA). Leptomeningeal collateral (LMC) circulation was graded using CTA by experienced neurosurgeons to assess its prognostic value. Results : The thirty day mortality for patients ≥ 65 was 35.0% compared to 37.5% in patients < 65. There was no significant difference in the clinical and function outcome between the two groups (4.8 ± 1.2 vs. 4.5 ± 1.5, p = 0.474). Mortality was lower with early surgery (within 24 hours) group for both age groups (25% vs. 37.5% in ≥ 65, 20% vs. 40.7% in < 65). Longer intensive care units stay time and good collateral supply score were correlated with favorable outcome (p = 0.028, p = 0.018). Conclusion : Decompressive craniectomy within 24 hours of stroke symptom onset improved survival in both the < 65 and ≥ 65 age groups. There was no significant difference in the functional outcome of both age groups. Unlike previous reports, old age, delayed operation, and multiple of infarct territories were not predictive of poor functional outcome. The presence of good collateral circulation may be a predictor of positive clinical outcome in acute ischemic stroke patients undergoing decompressive craniectomy.
박래선(Park Rhae-Sun),이상순(Lee Sang-Soon),임채운(Lim Chae-Woon) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Fire may lead to web shear buckling in steel box girders due to degradation of the steel strength at elevated temperatures. In this paper, shear buckling strength and ultimate shear strength are evaluated at elevated temperature and stability analysis for fire-damaged web plate is performed.
박래선 ( Park¸ Rhae-sun ),이상순 ( Lee¸ Sang-soon ),임채운 ( Lim¸ Chae-woon ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.2
Fire may lead to web shear buckling in steel box girders due to degradation of the steel strength at elevated temperatures. In this paper, shear buckling strength and ultimate shear strength are evaluated at elevated temperature and stability analysis for fire-damaged web plate is performed.