title: Relation of resistive and pulsatility indices with graft function after renal transplant.
abstract: OBJECTIVE
  There are conflicting data regarding the use of some measured indices by Doppler ultrasound such as the resistive index and the pulsatility index in predicting renal allograft dysfunction. This study sought to evaluate the association of early postoperative Doppler indices and 3-month serum creatinine levels in renal transplant recipients.
  
  
  METHODS
  During a 1-year period, all patients who underwent renal transplant at our hospital were recruited into a prospective study. Doppler ultrasound was performed on all patients 6 days and 3 months after the transplant and the resistive index and the pulsatility index were calculated for each patient. Then, the association between these indices and 3-month outcomes of patients were investigated.
  
  
  RESULTS
  Thirty-eight patients including 21 men (mean age, 36.6 ± 13.1 y) were evaluated. There was a positive correlation between the resistive index and the pulsatility index at 6 days after transplant and the serum creatinine measured at the same day (P < .001 and r=0.570 for resistive index; P < .001 and r=0.547 for pulsatility index). There was also a positive correlation between the pulsatility index and the resistive index at 6 days after transplant and 3-month serum creatinine level (P = .009 and r=0.420 for resistive index; P = .009 and r=0.417 for pulsatility index). There were negative correlations between the resistive index and the pulsatility index on the sixth day after surgery and creatinine clearance measured at 6 days and 3 months after transplant.
  
  
  CONCLUSIONS
  This study reveals a strong-to-medium correlation between the resistive index and the pulsatility index, serum creatinine level, measured 6 days after transplant.
authors.affiliation: Department of Nephrology, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. dralighorbani@yahoo.com
authors.forename: Ali
authors.initials: A
authors.lastname: Ghorbani
authors.forename: Ahmad Soltani
authors.initials: AS
authors.lastname: Shirazi
authors.forename: Mozhgan
authors.initials: M
authors.lastname: Sametzadeh
authors.forename: Pooria
authors.initials: P
authors.lastname: Mansoori
authors.forename: Azade
authors.initials: A
authors.lastname: Taheri
mesh_terms: D000328:Adult; D003404:Creatinine / Q000097:blood*; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging*; D016030:Kidney Transplantation / Q000000981:diagnostic imaging; D008297:Male; D011446:Prospective Studies
chemical_list: D003404:Creatinine