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Ann Thorac Surg 1993;55:534-537
© 1993 The Society of Thoracic Surgeons
Division of Cardiothoracic Surgery, University of California, Davis Medical Center, Sacramento, California USA
Accepted for publication September 24, 1992.
* Address reprint requests to Dr Follette, Division of Cardiothoracic Surgery, UC Davis Medical Center, 4301 X St, Rm 2250, Sacramento, CA 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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