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March 1973

Threshold Burning Effects on Distant MicrocirculationII. The Relationship of Area Burnt to Microvascular Size

Author Affiliations

Augusta, Ga
From the Department of Surgery, Medical College of Georgia and Veterans Administration Hospital, Forest Hills Division, Augusta, Ga.

Arch Surg. 1973;106(3):317-319. doi:10.1001/archsurg.1973.01350150051014

Following full-thickness 720 C contact burns of rabbits' flanks, omental micro-vessels were studied for 120 minutes. Area burnt ranged from 0.7% body surface area (BSA) to 30% BSA. Omental venular dilatation was a constant finding. Arteriolar constriction was a constant finding if the burned area exceeded ± 8% BSA. Microvascular size was generally inversely proportional to the BSA traumatized. These findings are consistent with clinically observed peripheral vasoconstriction, venostasis, and diminished cardiac output in the victim of major burn trauma.