Abstract
Functioning collateral channels were uniformly shown following temporary unilateral renal artery occlusion lasting 30–90 minutes in nephrectomized dogs. The kidneys decreased in size, with slower blood flow, a protracted, irregular nephrogram, and early visualization of veins. Contrast injection during occlusion was associated with profound renal damage in the dogs studied. Unintentional renal artery occlusion in man during selective renal arteriography is equally hazardous. It may be avoided by careful, continuous monitoring of blood pressure through the selective catheter, visual evidence of rapid disappearance of the test injectate, and demonstration of good backflow from the catheter.
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