| Effect of carotid angioplasty and stenting on duplex velocity measurements in a porcine model. | |
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MedLine Citation:
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PMID: 19090631 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To evaluate if there are any differences in duplex ultrasound velocity measurements between native and stented carotid arteries using duplex ultrasound in an animal model. METHODS: The common carotid artery of 5 pigs was exposed bilaterally (10 arteries). Diameters and velocities were measured by ultrasound in the proximal, mid, and distal native artery at the intended site of stent implantation. Measurements were repeated after bilateral stent placement (Wallstent versus Precise) under angiographic control. Outcomes of native versus stented arteries and Wallstent versus Precise were statistically compared. RESULTS: Angiographic measurements matched well with duplex-measured diameters. The mean proximal stent diameter (3.5+/-0.5 mm) was significantly smaller than the native proximal artery diameter (4.2+/-0.4 mm, p = 0.004), mostly due to narrowing of the Wallstent diameter to 3.2+/-0.5 mm (p = 0.009). Proximal, mid, and distal segments of the Wallstents were narrower than those of the Precise stent, and associated peak systolic velocities (PSV) were higher at the 3 locations versus the Precise stent, although the differences were not statistically significant. Wallstent PSVs were higher than in the native artery at the proximal, mid, and distal segments, respectively; again, the differences were not statistically significant. CONCLUSION: Stent placement caused anatomical and hemodynamic alterations. Narrowings and associated increased velocities were noted. Such alterations, however, were stent-type dependent and did not justify a general approach to new velocity criteria indiscriminately applied to all stents. |
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Authors:
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Gert J de Borst; Rudy Meijer; Rob H Lo; Hans W G Vosmeer; Rob G A Ackerstaff; Frans L Moll |
Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists Volume: 15 ISSN: 1526-6028 ISO Abbreviation: J. Endovasc. Ther. Publication Date: 2008 Dec |
Date Detail:
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Created Date: 2008-12-18 Completed Date: 2009-03-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100896915 Medline TA: J Endovasc Ther Country: United States |
Other Details:
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Languages: eng Pagination: 672-9 Citation Subset: IM |
Affiliation:
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Department of Vascular Surgery, University Medical Center Utrecht, Utrecht, The Netherlands. G.J.deBorst-2@umcutrecht.nl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Angioplasty
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adverse effects,
instrumentation* Animals Blood Flow Velocity Carotid Artery, Common / physiopathology, surgery*, ultrasonography* Female Hemodynamics* Laser-Doppler Flowmetry* Models, Animal Prosthesis Design Radiography, Interventional Regional Blood Flow Stents* Swine Treatment Outcome Ultrasonography, Doppler, Duplex* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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