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3D numerical model of blood flow in the coronary artery bypass graft during no pulse and pulse situations: Effects of an anastomotic angle and characteristics of fluid

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Abstract

Coronary heart disease (CHD) is a fatal condition caused by atherosclerosis or plaque on the arterial walls resulting in its breakage. Curing this disease effectively can be conducted through bypass graft surgery, which helps to restore the blood flow. However, some patients have required repeated surgery because of frequent failures of an implanted bypass graft. In this study, the stenosed coronary artery bypass graft including an analysis of the blood flow phenomena and wall shear stress, based on a three-dimensional computer model, was analyzed and developed to approach a realistic situation, inlet pulse and non-Newtonian behavior. The effects of the anastomotic angles (45°, 60° and 90°), blood characteristics (Newtonian and non-Newtonian) and inlet situations (with and without pulse) were taken into consideration. The results demonstrated that the anastomosis of 45° was the most appropriate for resolving the CHD problem and could act as a guide for medical treatment as well.

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Authors and Affiliations

  1. Center of Excellence in Electromagnetic Energy Utilization in Engineering (C.E.E.E.), Department of Mechanical Engineering, Faculty of Engineering, Thammasat University (Rangsit Campus), Pathumthani, 12120, Thailand

    Satiraporn Koksungnoen, Phadungsak Rattanadecho & Patcharaporn Wongchadakul

Authors
  1. Satiraporn Koksungnoen
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  2. Phadungsak Rattanadecho
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  3. Patcharaporn Wongchadakul
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Corresponding author

Correspondence to Phadungsak Rattanadecho.

Additional information

Recommended by Associate Editor Sung Yang

S. Koksungnoen is currently pursuing her Master degree in the Department of Mechanical Engineering of Thammasat University, Thailand. Her research field is about a numerical investigation of fluid flow, heat and mass transfer in a blood vessel.

P. Rattanadecho earned his Ph.D. in Mechanical Engineering from Nagaoka University of Technology, Japan. He is currently a Professor at the Department of Mechanical Engineering of Thammasat University, Thailand. He is particularly interested in interdisciplinary research and modern computational techniques, research on heat and mass transferring in electromagnetic waves, and biomechanics.

P. Wongchadakul received Ph.D. in Medical Engineering from Thammasat University, Thailand. Presently, she is a lecturer at HRH Princess Chulabhorn College of Medical Science, Thailand. Her research interests are a computerized simulation on heat and mass transferring from a medicinal laser in biological tissue.

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Koksungnoen, S., Rattanadecho, P. & Wongchadakul, P. 3D numerical model of blood flow in the coronary artery bypass graft during no pulse and pulse situations: Effects of an anastomotic angle and characteristics of fluid. J Mech Sci Technol 32, 4545–4552 (2018). https://doi.org/10.1007/s12206-018-0851-z

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  • DOI: https://doi.org/10.1007/s12206-018-0851-z

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