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Canadian Journal of Anesthesia, Vol 38, 926-930, Copyright © 1991 by Canadian Anesthesiologists' Society

ARTICLES

Abdominal aortic aneurysm repair in a patient with a cardiac transplant

A MacIntyre and L Garnett
Department of Anesthesia, Ottawa Civic Hospital, Ontario.

We describe successful elective abdominal aneurysm repair in a patient with a cardiac transplant. In light of the unique physiology and pharmacology of the denervated heart, this presented an unusual combination of complex problems. Whereas the normally innervated heart increases cardiac output via neural stimuli, the denervated heart relies primarily on the Frank Starling mechanism which is dependent on preload and myocardial contractility. Thus, rapidly changing haemodynamic variables associated with aortic cross-clamping require scrupulous attention to the maintenance of adequate preload as well as myocardial function which can only be manipulated by direct-acting agents. We conclude that the denervated heart will readily compensate for the haemodynamic changes brought about by infrarenal aortic crossclamping if a high-normal preload is maintained and if the transplanted donor heart is free of pathology with good inherent myocardial contractility.


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S. Fazel, D. K. Lawlor, and T. L. Forbes
Abdominal Aortic Aneurysms Following Orthotopic Heart Transplantation
Vascular and Endovascular Surgery, March 1, 2004; 38(2): 149 - 155.
[Abstract] [PDF]


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Copyright © 1991 by the Canadian Anesthesiologists' Society.