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- W30109788 abstract "Non-occlusive ureteral catheters were placed bilaterally in the renal pelves of 30 patients known to have hypertension. Samples of urine were collected under conditions of normal hydration, of urea-PAH-saline diuresis and, in some cases, mannitol diuresis. The samples were analyzed for indications of impaired flow of blood to the kidneys. Aortograms were obtained in all cases. This placement of non-occlusive catheters up into the renal pelves was felt to have caused only minimal disturbance of renal function, and was not accompanied by ureteral edema with the concomitant complications caused by occlusive catheters. Under conditions of normal hydration, leakage was insignificant. Of the 20 patients in whom urea-PAH-saline infusion revealed an ischemic pattern, 19 had an ischemic pattern under conditions of normal hydration. Since in the one exception an aortographic examination did not show a surgically reparable renal lesion, it may be inferred that the use of urea-PAH-saline diuresis is not essential in the preoperative evaluation of hypertensive renal disease. Correlation of the results of differential renal function studies and aortographic findings was possible in 19 of the 30 patients. Lack of correlation in the remaining 11 patients emphasized the importance of obtaining both types of study. Aortographic examination combined with differential renal function studies, using small ureteral catheters under conditions of normal hydration, should give the urologist a practical and yet accurate method of determining differential renal blood flow. If desired, further verification could be obtained by administering contrast medium and performing serial measurements of urine density." @default.
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- W30109788 title "DIFFERENTIAL RENAL FUNCTION STUDY: AN AID IN PREOPERATIVE EVALUATION OF HYPERTENSIVE PATIENTS." @default.
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