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Related Concept Videos

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In human anatomy, anastomosis refers to a connection or opening between two things, particularly between blood vessels or other tubular structures. The term is derived from the Greek term 'anastomosis,' which means 'outlet' or 'opening.' This natural network of connections plays a critical role in the survival and functionality of the human body.
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The vascular system, an integral part of the circulatory system, comprises various blood vessels that play crucial roles in maintaining the body's homeostasis. These blood vessels form a complex and efficient circulatory network. The three primary categories of blood vessels are the arteries, veins, and capillaries.
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Related Experiment Video

Updated: May 1, 2026

Development of a Murine Model for Femoral Artery Anastomotic Stenosis
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794

Blood flow through sutured and coupled microvascular anastomoses: a comparative computational study.

Richard A J Wain1, Justin P M Whitty2, Milind D Dalal3

  • 1Department of Plastic & Reconstructive Surgery, Christie Hospital NHS Foundation Trust, Wilmslow Road, Manchester M20 4BX, UK; School of Computing, Engineering and Physical Sciences, University of Central Lancashire, Fylde Road, Preston, Lancashire PR1 2HE, UK; Department of Plastic & Reconstructive Surgery, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Foundation Trust, Sharoe Green Lane, Preston, Lancashire PR2 9HT, UK.

Journal of Plastic, Reconstructive & Aesthetic Surgery : JPRAS
|April 16, 2014
PubMed
Summary

Sutured arterial anastomoses show higher thrombogenic potential than coupled anastomoses due to unfavorable blood flow dynamics, including altered velocity profiles and elevated wall shear stress.

Keywords:
AnastomosisComputational modellingCoupledCouplerMicrovascularSutured

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Fluid Dynamics

Background:

  • Arterial anastomoses are crucial in vascular surgery.
  • Sutured and coupled techniques are common, but their impact on blood flow and thrombosis risk is debated.

Purpose of the Study:

  • To compare blood flow characteristics in idealized sutured versus coupled arterial anastomoses.
  • To investigate flow parameters potentially linked to thrombus formation.

Main Methods:

  • Computational fluid dynamics (CFD) modeling of blood flow in non-compliant arterial models.
  • Simulation of Newtonian fluid flow in sutured and coupled anastomosis geometries.
  • Analysis of velocity profiles, wall shear stress (WSS), and shear strain rate (SSR).

Main Results:

  • Sutured anastomoses exhibited reduced boundary velocity, high WSS, and high SSR at suture sites.
  • Coupled anastomoses showed a minor increase in WSS, significantly less than sutured models.
  • Average WSS in coupled anastomoses was comparable to pristine vessels.

Conclusions:

  • Sutured arterial anastomoses present a theoretically more thrombogenic profile compared to coupled anastomoses.
  • Coupled anastomosis flow dynamics closely resemble those of a healthy, uninjured vessel.
  • CFD analysis suggests sutured methods may carry a higher risk of thrombus formation.