Early postoperative spectral Doppler parameters of renal transplants: the effect of donor and recipient factors.
BACKGROUND
The objective of this study was to explore the donor and recipient factors related to the spectral Doppler parameters of the transplant kidney in the early posttransplantation period.


METHODS
This retrospective study included 76 patients who underwent renal transplantation assessed using Doppler ultrasonography (US) on the first postoperative day. We compared spectral Doppler parameters (peak systolic velocity [PSV] and resistive index [RI]) of the segmental artery of the transplant kidney according to the type of renal transplant, level of serum creatinine (SCr) of donor prior to organ donation, and donor/recipient age.


RESULTS
RI was significantly higher in deceased-donor kidney transplantation (DDKT) as compared with living-donor kidney transplantation (LDKT; 0.73 ± 0.10 vs 0.66 ± 0.11; P = .007). In the DDKT recipients, multivariate analysis showed donor SCr was the only factor affecting PSV (P = .023), whereas recipient age was the only factor affecting RI (P = .035). In the LDKT recipients, multivariate analysis showed recipient age was the only factor affecting both PSV (P = .009) and RI (P = .018).


CONCLUSIONS
Spectral Doppler parameters in the early posttransplantation period are related to the type of renal transplant, donor renal function, and recipient age. These factors should be taken into consideration when interpreting the results of spectral Doppler US.
Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan.
H-K
HK
Wang
S-Y
SY
Chiou
Y-C
YC
Lai
H-Y
HY
Cheng
N-C
NC
Lin
C-C
CC
Loong
H-J
HJ
Chiou
Y-H
YH
Chou
C-Y
CY
Chang
D000367:Age Factors; D015415:Biomarkers / Q000097:blood; D001783:Blood Flow Velocity; D003404:Creatinine / Q000097:blood; D006801:Humans; D007668:Kidney / Q000098:blood supply / Q000000981:diagnostic imaging / Q000601:surgery; D016030:Kidney Transplantation / Q000009:adverse effects; D016014:Linear Models; D019520:Living Donors; D008875:Middle Aged; D015999:Multivariate Analysis; D011237:Predictive Value of Tests; D012039:Regional Blood Flow; D012077:Renal Artery / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D012079:Renal Circulation; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D013624:Taiwan; D013997:Time Factors; D014019:Tissue Donors; D016896:Treatment Outcome; D018608:Ultrasonography, Doppler; D014655:Vascular Resistance
D015415:Biomarkers; D003404:Creatinine