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Shirley J. Fearn, PhD, FRCS, Andrew J. Picton, BSc, Andrew J

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Presentation on theme: "Shirley J. Fearn, PhD, FRCS, Andrew J. Picton, BSc, Andrew J"— Presentation transcript:

1 The contribution of the external carotid artery to cerebral perfusion in carotid disease 
Shirley J. Fearn, PhD, FRCS, Andrew J. Picton, BSc, Andrew J. Mortimer, MD, FRCA, Andrew D. Parry, MBChB, FRCS, Charles N. McCollum, MD, FRCS  Journal of Vascular Surgery  Volume 31, Issue 5, Pages (May 2000) DOI: /mva Copyright © 2000 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2 Fig. 1 Absolute fall in the percentage CsO2 on clamping the ECA and then on additional clamping of the ICA for each patient. Median and interquartile ranges are shown, and statistical comparison is by the nonparametric Mann-Whitney U test. CsO2, Cerebral oxygen saturation; ECA, external carotid artery; ICA, internal carotid artery. Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 2000 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3 Fig. 2 Percentage fall in middle cerebral artery blood flow velocity by TCD on clamping the ECA and then on additional clamping of the ICA for each patient. Results are expressed as median and interquartile ranges and demonstrate significant falls in middle cerebral blood flow on both ECA and ICA cross-clamp (Mann-Whitney U test). ECA, External carotid artery; ICA, internal carotid artery; TCD, transcranial Doppler sonography. Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 2000 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4 Fig. 3 Correlation between the fall in CsO2 and fall in middle cerebral blood flow velocity by TCD on ICA clamping (Spearman rank correlation coefficient, r = 0.62; P <.01). CsO2, Cerebral oxygen saturation; ICA, internal carotid artery; TCD, transcranial Doppler sonography. Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 2000 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

5 Fig. 4 Correlation between the fall in CsO2 and fall in middle cerebral blood flow velocity by TCD on ECA clamping (Spearman rank correlation coefficient, r = 0.32; P <.01). CsO2, Cerebral oxygen saturation; ECA, external carotid artery; TCD, transcranial Doppler sonography. Journal of Vascular Surgery  , DOI: ( /mva ) Copyright © 2000 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

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