| Collateral flow changes through the anterior communicating artery during carotid endarterectomy. | |
| | |
MedLine Citation:
|
PMID: 8791239 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
To evaluate early changes in collateral flow through the anterior communicating artery, 11 patients undergoing carotid endarterectomy were monitored. All had angiographically demonstrated collateral flow towards the hemisphere on the side of surgery. The middle cerebral artery ipsilateral to the operated side and the contralateral anterior cerebral artery were simultaneously insonated with a transcranial Doppler instrument equipped with dual transducers, and flow velocity values were obtained at specific surgical stages. Mean flow velocity in the contralateral anterior cerebral artery's A1 segment increased at clamp placement (p = 0.036), did not change during clamping, and decreased at clamp release (p = 0.004). The rise in velocity occurred within seconds of clamp placement in all patients with an increase, reaching the 10 cm/s threshold within 1 min. No consistent increase was detected after 5 min. A decrease in pulsatility index, indicating a drop in resistance, was detected at clamp placement in the middle cerebral artery on the side of surgery (p = 0.012). The index did not change during clamping, but increased at clamp release (p = 0.002). Our findings indicate that significant changes in anterior communicating artery collateral flow occur during carotid endarterectomy, starting within seconds of carotid artery clamping. These changes are associated with arterial resistance alterations in the territory of the middle cerebral artery on the endarterectomy side. Our observations should be useful to assess intracranial early collateral flow changes in surgical and non-surgical settings. |
| | |
Authors:
|
V L Babikian; J J Schwarze; N L Cantelmo; V Pochay; M Winter |
Related Documents
:
|
10724779 - The god of small things: the biology of intimal hyperplasia. 3311279 - Prospective assessment of carotid endarterectomy by clinical and ultrasonic methods. 9949349 - Tracheal transplantation: defining the vascular territory of the canine cranial thyroid... 15343559 - Carotid stenting with a new system for distal embolic protection and stenting in high-r... 17629859 - Short-term tissue response of lapine carotid artery microanastomoses to bioglue. 8202969 - Angiographic detection of carotid plaque ulceration. comparison with surgical observati... 23198269 - Catheter-induced thrombosis of the superior vena cava. 15079769 - Treatment of short-necked infrarenal aortic aneurysms with fenestrated stent-grafts: sh... 10724779 - The god of small things: the biology of intimal hyperplasia. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of the neurological sciences Volume: 138 ISSN: 0022-510X ISO Abbreviation: J. Neurol. Sci. Publication Date: 1996 Jun |
Date Detail:
|
Created Date: 1996-12-03 Completed Date: 1996-12-03 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 0375403 Medline TA: J Neurol Sci Country: NETHERLANDS |
Other Details:
|
Languages: eng Pagination: 53-9 Citation Subset: IM |
Affiliation:
|
Department of Neurology, Boston University School of Medicine, MA, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aged Blood Flow Velocity Cerebral Arteries / radiography* Cerebrovascular Circulation / physiology* Collateral Circulation / physiology* Electroencephalography Endarterectomy, Carotid* Humans Male Middle Aged |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Dysphagia in elderly men with myasthenia gravis.
Next Document: Changes in cerebral blood flow velocity after treatment with sumatriptan or placebo and implications...