Secondary recurrent carotid stenosis

Rosenthal, David; Archie, Joseph P.; Avila, Mario; Bandyk, Dennis F.; Carmichael, Josie; Clagett, G. Patrick; Hamman, Jack L.; Lee, Hyung M.; Liebman, Paul R.; Mills, Joseph L.; Minken, Stanley L.; Plonk, Georgia W.; Posner, Marc P.; Smith, Robert B.; String, S.Timothy

doi:10.1016/s0741-5214(96)70198-2

Cited by 25 publications

(19 citation statements)

References 14 publications

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“…Second, the mismatch in properties between the PTFE patch and the host arterial wall produces high-stress concentrations at the patch-artery interface and causes the more compliant posterior native arterial wall to bulge out, resulting in high ES. The finding of highstress concentrations with CEAP is consistent with the clinical findings of Rosenthal et al(50), who demonstrated higher incidence of post-CEA restenosis at the level of the bulb in patients with CEAP.…”

supporting

confidence: 91%

A mathematical evaluation of hemodynamic parameters after carotid eversion and conventional patch angioplasty

Kamenskiy

Pipinos

Dzenis

et al. 2013

American Journal of Physiology-Heart and Circulatory Physiology

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Carotid endarterectomy has a long history in stroke prevention, yet controversy remains concerning optimal techniques. Two methods frequently used are endarterectomy with patch angioplasty (CEAP) and eversion endarterectomy (CEE). The objective of this study was to compare hemodynamics-related stress and strain distributions between arteries repaired using CEAP and CEE. Mathematical models were based on in vivo three-dimensional arterial geometry, pulsatile velocity profiles, and intraluminal pressure inputs obtained from 16 patients with carotid artery disease. These data were combined with experimentally derived nonlinear, anisotropic carotid artery mechanical properties to create fluid-structure interaction models of CEAP and CEE. These models were then used to calculate hemodynamic parameters thought to promote recurrent disease and restenosis. Combining calculations of stress and strain into a composite risk index, called the integral abnormality factor, allowed for an overall comparison between CEAP and CEE. CEE demonstrated lower mechanical stresses in the arterial wall, whereas CEAP straightened the artery and caused high stress and strain concentrations at the suture-artery interface. CEAP produced a larger continuous region of oscillatory, low-shear, vortical flow in the carotid bulb. There was a more than two-fold difference in the integral abnormality factor, favoring CEE. In conclusion, in a realistically simulated carotid artery, fluid-structure interaction modeling demonstrated CEE to produce less mechanical wall stress and improved flow patterns compared with CEAP. Clinical validation with larger numbers of individual patients will ultimately be required to support modeling approaches to help predict arterial disease progression and comparative effectiveness of reconstruction methods and devices.

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supporting

confidence: 91%

A mathematical evaluation of hemodynamic parameters after carotid eversion and conventional patch angioplasty

Kamenskiy

Pipinos

Dzenis

et al. 2013

American Journal of Physiology-Heart and Circulatory Physiology

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“…17,19,21,23,26 Most restenotic lesions (70%) are localized in the origin of the ICA. 3,32,48 In agreement with these findings, our results and pooled data from four reports that provided location data 17,21,23,43 counted a 30% incidence of major restenosis being located in the distal CCA.…”

Section: Discussionmentioning

confidence: 99%

“…There are only six reports of Ͼ100 procedures, 6,13,16,30,33,36 10 reports of 50 to 99 procedures, 7,14,15,17,19,23,24,27,34,35 and 14 reports of Ͻ49 procedures. 5,18,[20][21][22]25,26,28,29,31,32,37,38 The reported 30-day stroke and death rates range from 0% to 5.4% (Table I). The most important flaw of most of these reports is the lack of follow-up.…”

Section: Discussionmentioning

confidence: 99%

Durability of surgery for restenosis after carotid endarterectomy

Borst

Zanen

Vries

et al. 2008

Journal of Vascular Surgery

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“…These results compare favorably with those of other reports. 11,14,15 Fry et al 9 reported a combined perioperative stroke and death rate of 5% in a group of 20 subclavian-carotid bypasses. A similar perioperative stroke and death rate (4.3%-6.3%) was reported by Berguer et al 13,16 in 2 recent series of cervical bypasses.…”

Section: Commentmentioning

confidence: 99%