Transcranial Doppler ultrasonography during cardiopulmonary bypass in patients with severe carotid stenosis or occlusion

Stroke; a Journal of Cerebral Circulation
G M von ReuternV Schlosser

Abstract

Blood flow velocity of the middle cerebral artery was monitored during cardiopulmonary bypass procedures by means of transcranial Doppler ultrasonography. Our investigation was carried out in a group of 16 patients with severe carotid stenosis or occlusion and in a control group of 42 patients with no or stenosis of less than 50% local diameter reduction. After onset of cardiopulmonary bypass, both groups showed a short unstable phase followed by increased blood flow velocity (10% increase ipsilateral to the obstruction, 27% increase in the control group). Just before rewarming, blood flow velocity was still comparable to (control group -3%) or higher than (ipsilateral to obstructions +14%) prebypass values. Analysis of three patients with postoperative diffuse encephalopathy did not reveal reduced blood flow during cardiopulmonary bypass as a relevant factor. Two of the three showed luxury perfusion. Reduced perfusion due to carotid obstruction was not observed during cardiopulmonary bypass and therefore cannot be considered a significant risk factor for the development of intraoperative stroke.

References

May 1, 1979·Stroke; a Journal of Cerebral Circulation·M P Spencer, J M Reid
Jul 1, 1975·Anesthesia and Analgesia·R J GordonR E Rawitscher
Feb 1, 1986·Ultrasound in Medicine & Biology·B J Arnolds, G M von Reutern
Aug 1, 1985·The Annals of Thoracic Surgery·T LundarH Nornes
May 1, 1973·Neurology·J J StockardJ F Schauble
Feb 1, 1984·The Journal of Thoracic and Cardiovascular Surgery·T D IveyA P Kruse
Mar 1, 1983·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·J J Grome, A M Harper
Sep 1, 1980·Annals of Surgery·W D TurnipseedF O Belzer

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Citations

Oct 1, 1991·Journal of Clinical Pharmacology·R L BondarK W Johnston
May 1, 1991·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·D H Wong
Jan 23, 2010·Perfusion·James L RudolphEdward R Marcantonio
Oct 1, 1993·Neurosurgery·N A MartinM Caron
Jun 1, 1990·Journal of Neurosurgery·C A GillerH H Batjer
Mar 1, 1993·Journal of Cardiac Surgery·D M Razi
Jun 23, 2009·Ultrasound in Medicine & Biology·James L RudolphViken L Babikian
Jan 1, 1991·Ultrasound in Medicine & Biology·F TranquartL Pourcelot
Feb 1, 1994·Journal of Cardiothoracic and Vascular Anesthesia·N A Nussmeier
Jan 1, 1990·Journal of Clinical Anesthesia·J A van der LindenH Tydén
Jan 1, 1996·Journal of Cardiothoracic and Vascular Anesthesia·D D Doblar
Apr 6, 1989·The New England Journal of Medicine
Feb 1, 1990·Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Für Medizinische Physik and the European Federation of Organisations for Medical Physics·P R Hoskins
May 23, 2016·Calcified Tissue International·Amy CreecyJeffry S Nyman
May 9, 2000·Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging·V L BabikianA V Alexandrov

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