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Cerebral Effects in Superior Vena Caval Cannula Obstruction: The Role of Brain Monitoring  Rosendo A Rodriguez, Garry Cornel, Lloyd Semelhago, William.

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Presentation on theme: "Cerebral Effects in Superior Vena Caval Cannula Obstruction: The Role of Brain Monitoring  Rosendo A Rodriguez, Garry Cornel, Lloyd Semelhago, William."— Presentation transcript:

1 Cerebral Effects in Superior Vena Caval Cannula Obstruction: The Role of Brain Monitoring 
Rosendo A Rodriguez, Garry Cornel, Lloyd Semelhago, William M Splinter, Nihal A Weerasena  The Annals of Thoracic Surgery  Volume 64, Issue 6, Pages (December 1997) DOI: /S (97)

2 Fig. 1 Electroencephalogram (EEG) recorded during a transient episode of obstruction in the superior vena cava (SVC) by the venous cannula. The “faster” EEG activity from before (A) is substituted by large-amplitude “slow” delta waves distributed in all derivations during the obstruction (B). Release of the obstruction (C) gradually returned the high-frequency components of the EEG and decreased the proportion of low-frequency activity. The Annals of Thoracic Surgery  , DOI: ( /S (97) )

3 Fig. 2 Transcranial Doppler waveforms before (A) and during superior vena caval (SVC) obstruction and cannula reposition (B). An arrow indicates the change in flow velocity pattern in the middle cerebral artery due to the release of the obstruction. Absence of diastolic flow is the first sign of transient obstruction detected before the reposition of the cannula (B). The Annals of Thoracic Surgery  , DOI: ( /S (97) )

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