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Ann Thorac Surg 1976;21:138-143
© 1976 The Society of Thoracic Surgeons
From the Intensive Care Unit, The Hospital for Sick Children, Toronto, Ont, Canada
Accepted for publication September 16, 1975.
* Address reprint requests to Dr. Edmonds, Intensive Care Unit, The Hospital for Sick Children, 555 University Ave, Toronto, Ont, Canada M5G 1x8
The proper siting of cannulas to return oxygenated blood to patients on long-term membrane oxygenator support is as yet undecided. This experimental study on adult sheep shows the problems of obtaining perfusion of the coronary arterial tree when blood is returned to the ascending aorta. Our 11 experiments demonstrate that the coronary arterial tree is perfused with blood ejected from the left ventricle except during very high bypass flows (85% bypass) or when the aortic valve is rendered incompetent.
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