지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.1
- 수록면
- 19 - 27 (9page)
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초록· 키워드
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For patients with renal failure, renal replacement therapies are needed. Hemodialysis is a widely used renal replacement method to remove waste products. It is important to improve the patency rate of the vascular access for efficient dialysis. Since some complications such as an intimal hyperplasia are associated with the flow pattern, the hemodynamics in the vascular access must be considered to achieve a high patency rate. In addition, the blood flow from an artificial kidney affects the flow in the vascular access. Generally, the clinical techniques of hemodialysis such as the catheter angle or dialysis dose have been set up empirically. In this study, a numerical analysis is performed on the effect of the catheter angle on the flow in the graft. Blood is assumed to be a non-Newtonian fluid. According to the high average wall shear stress value, the leucocytes and platelets can be activated not only at the arterial anastomosis, but also at the bottom of the venous graft, when the catheter angle is not zero. For a catheter angle less than five degrees, there is a low shear and high oscillatory shear index region that appears at the venous graft and the venous anastomosis. Thus, a catheter angle less than five degrees should be avoided to prevent graft failure.
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참고문헌 (35)
참고문헌 신청
Beathard, G. / 1994 / The treatment of vascular access graft dysfunction: a nephrologist's view and experience / Adv. Renal Replace. Th 1(2):131~147
Byung-Kwon Lee / 2011 / Determination of the blood viscosity and yield stress with a pressure- scanning capillary hemorheometer using constitutive models / The Korea-Australia Rheology Journal 23(1):1~6
Cho, Y. / 1991 / Effects of the non-Newtonian viscosity of blood on flows in a diseased arterial vessel. Part 1: Steady flows. Biorheology. condition, T.N.C.C.F.C., Chronic Kidney Disease / Royal College of Physicians
Dixon, B.S. / 2011 / Use of aspirin associates with longer primary patency of hemodialysis grafts / J. Am. Soc. Nephrol 22(4):773~781
Decorato, I. / 2011 / Numerical study of the influence of wall compliance on the hemodynamics in a patient-specific arteriovenous fistula, Comput. Methods Biomech / Biomed. Eng 14(Sup1):121~123
Byung-Kwon Lee / 2011 / Determination of the blood viscosity and yield stress with a pressure- scanning capillary hemorheometer using constitutive models / The Korea-Australia Rheology Journal 23(1):1~6
Cho, Y. / 1991 / Effects of the non-Newtonian viscosity of blood on flows in a diseased arterial vessel. Part 1: Steady flows. Biorheology. condition, T.N.C.C.F.C., Chronic Kidney Disease / Royal College of Physicians
Dixon, B.S. / 2011 / Use of aspirin associates with longer primary patency of hemodialysis grafts / J. Am. Soc. Nephrol 22(4):773~781
Decorato, I. / 2011 / Numerical study of the influence of wall compliance on the hemodynamics in a patient-specific arteriovenous fistula, Comput. Methods Biomech / Biomed. Eng 14(Sup1):121~123
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