Correlation between renal artery resistance index and serum creatinine in acute rejection of renal transplant

Objective: To correlate renal artery resistance indices (RI) and serum creatinine in patients with acute rejection after renal transplantation. Methods: Color Doppler ultrasound was performed on 32 patients with acute rejection at 1, 3, 5, 7, 9 days (T₁, T₃, T₅, T₇, T₉) after renal transplantation. The renal artery RI were measured and correlated with serum creatinine obtained simultaneously. Results: Renal artery RI rise earlier than serum creatinine. There was significant positive correlation (P < 0.05) between the renal artery RI and serum creatinine. Conclusions: Renal artery RI correlate well with serum creatinine and can aid detection of early acute rejection after renal transplantation. (authors)