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  • Title: Analysis of radiocontrast-induced nephropathy by dual-labeled radionuclide clearance.
    Author: Albert SG, Shapiro MJ, Brown WW, Goodgold H, Zuckerman D, Durham R, Kern M, Fletcher J, Wolverson M, Plummer ES.
    Journal: Invest Radiol; 1994 Jun; 29(6):618-23. PubMed ID: 8088970.
    Abstract:
    RATIONALE AND OBJECTIVES: This study was devised to develop a method of measuring the acute effects of radiocontrast media on renal function and assessing the relationship of the dose of radiocontrast media infused with the incidence of radiocontrast-induced renal failure. In addition, the drug adenosine phosphate-magnesium chloride (ATP-MgCl2) was evaluated as a renoprotective agent. METHODS: Eighteen patients with pre-existing renal impairment, (serum creatinine greater than 133 mumol/L) were randomized to receive a continuous infusion of ATP-MgCl2 or placebo before and during a radiocontrast procedure. Subjects were monitored with daily serum creatinine and with radionuclide renal clearance studies at baseline, during, and 24 hours after the radiocontrast procedure. RESULTS: There was an initial deterioration in renal clearance in the entire study group (from 44.2 +/- 4.6 to 32.6 +/- 3.9 mL/min, P = .001) which was independent of the dose of radiocontrast infused. There was a persistent deterioration in renal clearance only in those who received greater than 135 mL of contrast media (from 48.6 +/- 7.8 to 37.1 +/- 3.9 mL/min, P = .05). There also was an increase in serum creatinine that persisted only in those subjects who received greater than 135 mL of contrast media (230 +/- 27 to 283 +/- 44 mumol/L, P = .01). CONCLUSION: Persistent deterioration in renal function after radiocontrast administration appears to be dose-dependent and is not prevented by the use of ATP-MgCl2. Radionuclide techniques are useful in monitoring acute changes in renal function during radiocontrast procedures and may be of value in assessing renal impairment in future intervention studies.
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