The influence of the instabilities in modelling arteriovenous junction haemodynamics

Broderick, Stephen P.; Houston, J. Graeme; Walsh, Michael T.

doi:10.1016/j.jbiomech.2015.07.038

Cited by 6 publications

(1 citation statement)

References 33 publications

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“…This is due to the differential compliance between the vein graft and the artery. This variable laminar flow can subsequently lead to local turbulence (Broderick, Houston, & Walsh, 2015; Lopez-Monjardin & de la Pena-Salcedo, 2000). Thus, variations in compliance at the anastomotic site contribute to local turbulence across the anastomosis (Matsumoto, Naiki, & Hayashi, 1992;Stewart & Lyman, 1992;Weston, Rhee, & Tarbell, 1996).…”

Section: Discussionmentioning

confidence: 99%

The superficial and deep inferior epigastric artery composite perforator flap for breast reconstruction: A case report

et al. 2018

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The superficial inferior epigastric artery (SIEA) flap and the deep inferior epigastric perforator (DIEP) flap have been increasingly adopted for breast reconstruction; however, each have its own set of advantages and disadvantages. In the select subset of patients that cannot tolerate minimal abdominal fasciotomy that occurs with DIEP harvest and do not have adequate pedicle length that often occurs after SIEA harvest, we suggest another option for abdominally‐based free flap breast reconstruction. Here, we describe the formation of a composite perforator based on the pedicle of the retro‐rectus deep inferior epigastric vessels and the superficial inferior epigastric vessels, known as a superficial and deep inferior epigastric artery (SADIE) flap, which allows for a more compatible anastomotic size match than the SIEA and elongation of the vascular pedicle with minimal dissection of the anterior rectus fascia. Our patient is a 36 year‐old female (BMI = 24) with a history of breast cancer who subsequently underwent skin‐sparing mastectomy with tissue expander, chemotherapy, and eventual superior and deep inferior epigastric artery (SADIE) composite flap. The patient had an uncomplicated postoperative course at 6‐month follow‐up with excellent cosmesis. This modification in surgical technique has not been previously described in the literature and represents a suitable option for those desiring breast reconstruction, but have short pedicle length at harvest and cannot tolerate abdominal fasciotomy.

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Section: Discussionmentioning

confidence: 99%

The superficial and deep inferior epigastric artery composite perforator flap for breast reconstruction: A case report

et al. 2018

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Blood Flow in Idealized Vascular Access for Hemodialysis: A Review of Computational Studies

Ene-Iordache

Remuzzi

2017

Cardiovasc Eng Tech

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Although our understanding of the failure mechanism of vascular access for hemodialysis has increased substantially, this knowledge has not translated into successful therapies. Despite advances in technology, it is recognized that vascular access is difficult to maintain, due to complications such as intimal hyperplasia. Computational studies have been used to estimate hemodynamic changes induced by vascular access creation. Due to the heterogeneity of patient-specific geometries, and difficulties with obtaining reliable models of access vessels, idealized models were often employed. In this review we analyze the knowledge gained with the use of computational such simplified models. A review of the literature was conducted, considering studies employing a computational fluid dynamics approach to gain insights into the flow field phenotype that develops in idealized models of vascular access. Several important discoveries have originated from idealized model studies, including the detrimental role of disturbed flow and turbulent flow, and the beneficial role of spiral flow in intimal hyperplasia. The general flow phenotype was consistent among studies, but findings were not treated homogeneously since they paralleled achievements in cardiovascular biomechanics which spanned over the last two decades. Computational studies in idealized models are important for studying local blood flow features and evaluating new concepts that may improve the patency of vascular access for hemodialysis. For future studies we strongly recommend numerical modelling targeted at accurately characterizing turbulent flows and multidirectional wall shear disturbances.

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Computational Analysis of Turbulent Hemodynamics in Radiocephalic Arteriovenous Fistulas to Determine the Best Anastomotic Angles

Prouse

Stella

Vergara

et al. 2020

Annals of Vascular Surgery

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The influence of the instabilities in modelling arteriovenous junction haemodynamics

Cited by 6 publications

References 33 publications

The superficial and deep inferior epigastric artery composite perforator flap for breast reconstruction: A case report

The superficial and deep inferior epigastric artery composite perforator flap for breast reconstruction: A case report

Blood Flow in Idealized Vascular Access for Hemodialysis: A Review of Computational Studies

Computational Analysis of Turbulent Hemodynamics in Radiocephalic Arteriovenous Fistulas to Determine the Best Anastomotic Angles

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