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Ann Thorac Surg 1997;64:1820-1822
© 1997 The Society of Thoracic Surgeons

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Case Report

Cerebral Effects in Superior Vena Caval Cannula Obstruction: The Role of Brain Monitoring

Division of Cardiovascular Surgery, Department of Surgery, and Department of Anaesthesia, Children's Hospital of Eastern Ontario and University of Ottawa, Ottawa, Ontario, Canada

Accepted for publication July 14, 1997.

A pediatric cardiac case of transient obstruction of the superior vena cava by the venous cannula before cardiopulmonary bypass is presented. With venous obstruction and increase in central venous pressure, reduced cerebral blood flow velocities and absence of diastolic Doppler flow were detected. This was followed by regional cerebral venous oxygen desaturation and global electroencephalographic slowing. Reposition of the venous cannula led to the recovery of these physiologic indicators and a noncomplicated clinical outcome.

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