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The Annals of Thoracic Surgery, Vol 55, 534-537, Copyright © 1993 by The Society of Thoracic Surgeons

ARTICLES

Use of a heat exchanger to prevent hypothermia during thoracic and thoracoabdominal aneurysm repairs

KW Ireland, DM Follette, J Iguidbashian, ME Pollock, R Yoshikawa, J Sam and HA Berkoff
Division of Cardiothoracic Surgery, University of California, Davis Medical Center, Sacramento 95817.

Hypothermia is a common unplanned occurrence in many patients undergoing repair of thoracic and thoracoabdominal aneurysms. Many undesirable side effects of hypothermia have been documented, including decreased cardiac output, conduction abnormalities, and blood coagulopathies. We have developed a simple system that incorporates a Sci-Med Biotherm heat exchanger into our left heart bypass circuit. This provides us with the ability to actively rewarm the patient safely and efficiently. This study looks at 16 consecutive patients undergoing repair of thoracic or thoracoabdominal aneurysms. In the 9 patients in whom the heat exchanger was used, there were no adverse effects related to the heat exchanger. All patients had significantly higher temperatures at the conclusion of the procedure than the 7 patients in whom the heat exchanger was not used.

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