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당뇨황반부종에서 안구내 트리암시놀론 단독주입과 베바시주맙 병합주입의 단기 효과 비교
장민욱,김성우,오인경,오재령,허걸.Min Wook Chang. M.D.. Seoung Woo Kim. M.D.. In Kyung Oh. M.D.. Jae Ryung Oh. M.D.. Kuhl Huh. M.D.. Ph.D. 대한안과학회 2008 대한안과학회지 Vol.49 No.8
Purpose: To compare the effect of intravitreal triamcinolone injection with and without bevacizumab for diabetic macular edema. Methods: Of 69 patients (69 eyes) diagnosed with diabetic macular edema without any history of other intraocular disease or intraocular operation, 45 eyes (45 patients) were injected with intravitreal triamcinolone (4 mg) and the remaining eyes (24 patients) were injected with triamcinolone (2 mg) and bevacizumab (1.25 mg). The visual acuity and central macular thickness of treated eyes from both groups was measured using OCT, and these measurements were compared between the two groups. Results: There were no statistical differences between the two groups with respect to baseline data. Central macular thickness (CMT) was reduced in both groups, and BCVA improved in both groups. No significant differences were detected in changes in CMT or BCVA between the two groups. Conclusions: Intravitreal injection of triamcinolone had a beneficial effect on DME in terms of CMT reduction and BCVA improvement. Addition of three consecutive intravitreal bevacizumab injections, however, did not show any significant addictive effect during the follow-up period. J Korean Ophthalmol Soc 49(8):1269-1274, 2008
INVESTIGATION ON MECHANICAL AND BIO-MECHANICAL PERFORMANCE OF A CENTRIFUGAL BLOOD PUMP
M. Chang(장민욱),M. Moshfeghi,N. Hur(허남건),S. Kang(강성원),W. Kim(김원정),S. H. Kang(강신형) 한국전산유체공학회 2015 한국전산유체공학회지 Vol.20 No.2
Blood pump analysis process includes both mechanical and bio-mechanical aspects. Since a blood pump is a mechanical device, it has to be mechanically efficient. On the other hand, blood pumps function is sensitively related to the blood recirculation; hence, bio-factors such as hemolysis and thrombosis become important. This paper numerically investigates the mechanical and bio-mechanical performances of the Rotaflow in the extracorporeal membrane oxygenation(ECMO), Ventricular Assist Device(VAD), and full-load conditions. The operational conditions are defined as(400[mmHg], 5[L/min.]), (100[mmHg], 3[L/min.]), and (600[mmHg], 10[L/min.]) for ECMO, VAD, and full-load conditions, respectively. The results are presented and analyzed from the mechanical aspect via performance curves, and from bio-mechanical aspect via focusing on hemolytic characteristics. Regions of top and bottom cavities show recirculation in both ECMO and VAD condtions. In addition, Eulerian-based calculation of modified index of hemolysis(MIH) has been investigated. The results demonstrate that the VAD condition has the least risk of hemolysis among the others, while the full-load condition has the highest risk.