Abdominal aortic aneurysm repair in a patient with a cardiac transplant. 1991

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.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001012 Aorta, Abdominal The aorta from the DIAPHRAGM to the bifurcation into the right and left common iliac arteries. Abdominal Aorta,Abdominal Aortas,Aortas, Abdominal
D001014 Aortic Aneurysm An abnormal balloon- or sac-like dilatation in the wall of AORTA. Aneurysm, Aortic,Aneurysms, Aortic,Aortic Aneurysms
D016027 Heart Transplantation The transference of a heart from one human or animal to another. Cardiac Transplantation,Grafting, Heart,Transplantation, Cardiac,Transplantation, Heart,Cardiac Transplantations,Graftings, Heart,Heart Grafting,Heart Graftings,Heart Transplantations,Transplantations, Cardiac,Transplantations, Heart

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