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Significant Increase in 1-Year Posttransplant Renal Arterial Index Predicts Graft Loss.

Abstract : BACKGROUND AND OBJECTIVES: Conflicting data have been reported concerning the use of kidney graft arterial resistance index (RI) measured by Doppler to predict death-censored graft loss. We hypothesized that changes in RI values could carry better information than a single measure of RI. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Four hundred twenty-five renal transplant recipients were included in the study. We tested whether changes in renal arterial resistance index between 4 and 12 months after transplant (DeltaRI(4-->12)) were predictive of graft loss. RESULTS: Neither 4-month nor 1-year RI predicted graft loss. The area under the receiver operating characteristics curve of DeltaRI(4-->12) for graft loss was 0.75. A DeltaRI(4-->12) >/=10% had the best sensitivity and specificity. One year after transplant, 22% of the study population had DeltaRI(4-->12) >/=10%. Fifty-five patients (12.9%) experienced graft loss during follow-up. The annual incidence of graft loss was higher in patients with DeltaRI(4-->12) >/=10% (3.5 versus 1.3%; P = 0.009). In multivariate analysis, patients with DeltaRI(4-->12) >/=10% had an increased risk of graft loss (hazard ratio, 6.21; 95% confidence interval, 1.99 to 22.15; P = 0.002). CONCLUSIONS: A variation in RI >/=10% in the first year after transplant is an independent risk factor for death-censored graft loss in renal transplant recipients.
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Contributor : Philippe Saas <>
Submitted on : Monday, August 2, 2010 - 2:53:57 PM
Last modification on : Thursday, January 21, 2021 - 2:10:03 PM

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Mélanie Terebus Loock, Jamal Bamoulid, Cécile Courivaud, Philippe Manzoni, Dominique Simula-Faivre, et al.. Significant Increase in 1-Year Posttransplant Renal Arterial Index Predicts Graft Loss.. Clinical Journal of the American Society of Nephrology, American Society of Nephrology, 2010, epub ahead of print. ⟨10.2215/CJN.01210210⟩. ⟨inserm-00508043⟩



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