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The Annals of Thoracic Surgery, Vol 29, 57-62, Copyright © 1980 by The Society of Thoracic Surgeons

ARTICLES

Comparison of nonpulsatile and pulsatile extracorporeal circulation on renal cortical blood flow

JD Sink, WR Chitwood Jr, RC Hill and AS Wechsler

Radioactive microspheres were used to compare renal cortical blood flow with pulsatile and nonpulsatile extracorporeal perfusion in mongrel dogs. No difference was found in total renal cortical flow or in flow distribution using pulsatile compared with nonpulsatile perfusion when mean perfusion pressure was held constant at a high (80 mm Hg) or low (50 mm Hg) level. Although the present investigation does not resolve the question of whether pulsatile perfusion has advantages over nonpulsatile perfusion in maintaining renal function, the data indicate that any differences between the two techniques must be explained by a mechanism other than increased total cortical blood flow or by redistribution of cortical flow.




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Copyright © 1980 by The Society of Thoracic Surgeons.