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October 1969

Erythropoietin Release After Aortic Coarctation in the Baboon

Author Affiliations

Cape Province, South Africa
From Roswell Park Memorial Institute, New York State Department of Health; and the departments of urology and biochemical pharmacology, State University of New York at Buffalo, School of Medicine, Buffalo (Drs. Murphy and Mirand); and the Department of Surgery, Faculty of Medicine, University of Stellenbosch and the Karl Bremer Hospital, Bellville, Cape Province, South Africa (Drs. Groenewald and van Zyl).

Arch Surg. 1969;99(4):524-528. doi:10.1001/archsurg.1969.01340160104024

There has been considerable disagreement as to whether the changes in blood pressure observed in coarctation of the aorta can be explained solely by the mechanical effects of the lesion.1 Barcroft,2,3 Brotchner,4 and Page5 have previously shown that after acute aortic constriction in dogs, there is an immediate elevation of the blood pressure which is proportional to the amount of obstruction to the blood flow. However, as has long been appreciated, the results in many experimental situations are not strictly analogous to human coarctation.1,5 Clinical studies of renal function before and after operative correction of long-standing aortic coarctation have failed to show consistent or uniform improvement in renal hemodynamics.1,6,7 The relationship of renal ischemia to the observed hypertension has also not been completely accepted.15 Others have suggested, previously, that renin is released in response to the clinical or experimental coarctation.8-10 The resultant