1994
DOI: 10.1055/s-2007-1016524 View full text |Buy / Rent full text
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Abstract: Paten cy of the intern al carotid artery in cas e of common carotid arter y occlusion is usually maintain ed by a flow of blood from th e external caroti d into the intern al carotid artery. A cas e whe re a reversed flow of blood was established from the cerebral circ ulation into the internal carotid artery and eventua lly into the external carotid artery is pr esent ed. Car eful read ing of the cerebral views of th e standard carotid angiogram allowed detection of a retr ograd e flow into the internal carot… Show more

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“…Occasionally, reversal may be seen, with the ICA flowing retrograde and into the ECA. 54 Flow in the ICA can be readily detected by CD. This dynamic information regarding flow within the ICA and ECA distal to the CCA occlusion provides complementary information for cerebral angiography.…”
Section: Discussionmentioning
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“…Occasionally, reversal may be seen, with the ICA flowing retrograde and into the ECA. 54 Flow in the ICA can be readily detected by CD. This dynamic information regarding flow within the ICA and ECA distal to the CCA occlusion provides complementary information for cerebral angiography.…”
Section: Discussionmentioning
“…We presume that after endarterectomy, the blood flow to the brain from the left side increased, perhaps creating a pressure gradient through the collateral pathway of the circle of Willis that was sufficient to overcome the resistance of the right side and produce reversed flow in the ICA. 4,9 The high-resistance flow pattern in the right ICA probably resulted from the direction of flow toward the occluded CCA and the high-resistance arterial network of the ECA.…”
Section: Discussionmentioning
“…1 It is also very useful in evaluating the patency of vessels distal to the occluded CCA. 2,3 In 1 reported case of CCA occlusion, 4 angiography depicted reversed flow in the ipsilateral internal carotid artery (ICA), but color duplex sonography detected no flow signals in the extracranial ICA. To our knowledge, only 1 report has described color duplex sonography of reversed flow in the extracranial ICA.…”
mentioning
“…The extra cranial collateral vessels fill the ECA in a retrograde manner and maintain the anterograde flow in the ICA. The extra cranial collateral flow originates from the ipsilateral subclavian artery via the costocervical or thyrocervical trunks and the vertebral artery and, to a lesser degree, from the contralateral ECA through the superior thyroid and lingual, facial, and occipital branches [4,5,6]. The flow is maintained intracranially through the circle of Willis via the anterior and posterior communicating arteries.…”
Section: Discussion and Reviewmentioning