Comparison of morphological and rheological conditions between conventional and eversion carotid endarterectomy using computational fluid dynamics - a pilot study

Demirel, S; Chen, D; Mei, Y; Partovi, S; von Tengg-Kobligk, Hendrik; Dadrich, M; Böckler, D; Kauczor, Hu; Müller-Eschner, M (2015). Comparison of morphological and rheological conditions between conventional and eversion carotid endarterectomy using computational fluid dynamics - a pilot study. Vascular, 23(5), pp. 474-482. Sage Publications 10.1177/1708538114552836

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PURPOSE

To compare postoperative morphological and rheological conditions after eversion carotid endarterectomy versus conventional carotid endarterectomy using computational fluid dynamics.

BASIC METHODS

Hemodynamic metrics (velocity, wall shear stress, time-averaged wall shear stress and temporal gradient wall shear stress) in the carotid arteries were simulated in one patient after conventional carotid endarterectomy and one patient after eversion carotid endarterectomy by computational fluid dynamics analysis based on patient specific data.

PRINCIPAL FINDINGS

Systolic peak of the eversion carotid endarterectomy model showed a gradually decreased pressure along the stream path, the conventional carotid endarterectomy model revealed high pressure (about 180 Pa) at the carotid bulb. Regions of low wall shear stress in the conventional carotid endarterectomy model were much larger than that in the eversion carotid endarterectomy model and with lower time-averaged wall shear stress values (conventional carotid endarterectomy: 0.03-5.46 Pa vs. eversion carotid endarterectomy: 0.12-5.22 Pa).

CONCLUSIONS

Computational fluid dynamics after conventional carotid endarterectomy and eversion carotid endarterectomy disclosed differences in hemodynamic patterns. Larger studies are necessary to assess whether these differences are consistent and might explain different rates of restenosis in both techniques.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Institute of Diagnostic, Interventional and Paediatric Radiology
UniBE Contributor:	von Tengg-Kobligk, Hendrik
Subjects:	600 Technology > 610 Medicine & health
ISSN:	1708-5381
Publisher:	Sage Publications
Language:	English
Submitter:	Aisha Stefania Mzinga
Date Deposited:	01 May 2015 14:59
Last Modified:	05 Dec 2022 14:45
Publisher DOI:	10.1177/1708538114552836
PubMed ID:	25298137
Uncontrolled Keywords:	Computational fluid dynamics, carotid endarterectomy, eversion carotid endarterectomy, conventional carotid endarterectomy, rheology, carotid artery stenosis
URI:	https://boris.unibe.ch/id/eprint/66782