Relationship of pressure to blood flow in the dog kidney

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Abstract
Perfusion of the dog kidney via the aorta with no interruption of renal blood flow or disturbance of the kidney or its immediate physical surroundings revealed perfusion pressure-blood flow relationships similar to those previously reported for semi-isolated and isolated kidneys. This suggests that the kidney in the completely intact animal has a local mechanism for holding its blood flow constant despite changes of arterial pressure over the approximate range 70–200 mm Hg.