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Ann Thorac Surg 1994;58:222-225
© 1994 The Society of Thoracic Surgeons

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Articles

Fiberoptic cardioscopy under cardiopulmonary bypass: Potential for cardioscopic surgery?

Departments of Cardiology and Cardiochoracic Surgery, Green Lane Hospital, Auckland, New Zealand

Accepted for publication December 1, 1993.

^_* Address reprint requests to Dr Legget, Division of Cardiology, University of Washington Medical Center, AA-502 Heallh Sciences, RG-22, Seattle, WA 98195.

Attempts at cardioscopy have been hampered by the inability to see through blood. We describe a new method of intracardiac fiberscopic visualization performed in sheep using cardiopulmonary bypass, asanguineous cardjoplegic arrest, and replacement of intracardiac blood with a clear fluid. Right heart endoscopic visualization was achieved in 4 sheep using a method that could allow extrapolation to a percutaneous approach. Two of these animals were weaned successfully from cardiopulmonary bypass. Venting and flushing aspects of the procedure were of primary importance. Further development of this technique may open the way to percutaneous endoscopically guided intiacardiac operations in humans.

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