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The Role of Collateral Circulation

James R. Lohse, MD; Richard M. Shore, MD; Folkert O. Beizer, MD

Arch Surg. 1982;117(6):801-804.

Abstract
• It is not known if or when the probability of success is sufficient to warrant emergency revascularization of acute renal artery occlusion. This probability depends on the ability of collateral circulation to maintain viability. The role of collateral circulation in maintaining renal viability during six and 48 hours of renal artery occlusion has been studied in mongrel dogs. Collateral circulation is sufficient to maintain renal viability beyond the three hours of warm complete ischemia known to cause infarction. It is not sufficient to prevent progressive loss of renal function. Hypertension frequently results. Emergency revascularization of acute bilateral renal artery occlusion, therefore, is indicated. It is not indicated for unilateral occlusion with adequate contralateral function because of the high probability of resulting hypertension.

(Arch Surg 1982;117:801-804)

Author Affiliations
From the Department of Surgery, University of Wisconsin, Madison. Dr Lohse is now with the Gloucestershire Royal Hospital, Gloucester, England.

Footnotes
Accepted for publication July 10, 1981.

Reprint requests to Department of Surgery, University of Wisconsin Hospitals, 600 Highland Ave, Madison, WI 53792 (Dr Belzer).

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