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Evaluation of posterior cerebral artery blood flow with transcranial Doppler sonography: value and risk of common carotid artery compression.
(Sahlgrenska University Hospital, Göteborg)
Linköping University, Department of Medical and Health Sciences, Clinical Physiology. Linköping University, Faculty of Health Sciences. Linköping University, Center for Medical Image Science and Visualization (CMIV). Östergötlands Läns Landsting, Heart and Medicine Center, Department of Clinical Physiology in Linköping.
(Sahlgrenska University Hospital, Göteborg)
(Sahlgrenska University Hospital, Göteborg)
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2000 (English)In: Journal of Clinical Ultrasound, ISSN 0091-2751, E-ISSN 1097-0096, Vol. 28, no 9, 452-460 p.Article in journal (Refereed) Published
Abstract [en]

PURPOSE: Investigations of the posterior cerebral arteries (PCA) by transcranial Doppler sonography (TCD) may be less reliable than investigations of the anterior part of the circle of Willis. Nevertheless, a true PCA may be identified by manual compression of the proximal common carotid artery (CCA) during TCD. Therefore, we used CCA compression in clinically indicated TCD studies and assessed retrospectively its risks and prospectively its benefits for PCA evaluations.

METHODS: Using the transtemporal approach, we prospectively assessed flow velocities in posteriorly located blood vessels in 180 consecutive patients before and during CCA compression. The complications of CCA compression were retrospectively reviewed in all 3,383 clinical TCD investigations performed over an 8-year period.

RESULTS: Decreased flow velocities during ipsilateral CCA compression occurred in 17% of patients. A PCA-like vessel with perfusion from the carotid artery or PCA supply from the carotid circulation was unmasked. Mixed distal PCA support by the posterior communicating artery and proximal PCA could not be shown by TCD. Transient cerebral symptoms occurred in less than 0.4% of the 3,383 retrospectively reviewed TCD investigations; no other adverse effects were seen.

CONCLUSIONS: TCD without CCA compression may lead to false identification of the PCA. Since transient cerebral symptoms during CCA compression are rare, CCA compression can be used when a clinical TCD investigation of intracranial collateral blood flow compensation is indicated or when the identification of a cerebral artery is uncertain.

Place, publisher, year, edition, pages
2000. Vol. 28, no 9, 452-460 p.
National Category
Clinical Medicine
URN: urn:nbn:se:liu:diva-113413PubMedID: 11056022OAI: diva2:781771
Available from: 2015-01-19 Created: 2015-01-19 Last updated: 2015-01-26

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Zachrisson, Helene
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Clinical PhysiologyFaculty of Health SciencesCenter for Medical Image Science and Visualization (CMIV)Department of Clinical Physiology in Linköping
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Journal of Clinical Ultrasound
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