[Color Doppler ultrasound of kidney transplants. Does the resistance index facilitate diagnosis of chronic kidney failure?].
The retrospective study under report assessed the diagnostic capability of colour Doppler sonography (CDS) with measurement of the resistive index (RI) in the long-term follow-up of patients with renal allografts. 210 CDS examinations were performed in 115 patients. The time since transplantation ranged from 6 months to 22 years. The RI was correlated to laboratory parameters of renal allograft function (serum creatinine, urinary protein levels and serum-cyclosporine). In 97 of 210 examinations, serum creatinine was elevated (> 1.5 mg% or an increase of more then 0.3 mg% within the last 6 months). In 35 out of these examinations RI was > 70%, in 62 RI was < or = 70%. Thus, with a threshold RI of 70%, sensitivity of the RI in the diagnosis of renal allograft dysfunction is 36% and specificity 62%, respectively. There was no significant difference in the RI between examinations of allografts with normal function (68.2% +/- 7.5%) and those with dysfunction (68.5% +/- 8.5%). Furthermore, there was no significant correlation between the RI and any of the laboratory parameters. CDS with calculation of the RI cannot differentiate in the long-term follow-up between allografts with normal function and those with dysfunction.
Breitenseher
M
M
Univ.-Klinik f. Radiodiagnostik, Wien.
Helbich
T
T
Kainberger
F
F
Hübsch
P
P
Trattnig
S
S
Traindl
O
O
Mostbeck
G
G
D000293:Adolescent; D000328:Adult; D000368:Aged; D001783:Blood Flow Velocity / Q000502:physiology; D005260:Female; D006801:Humans; D007668:Kidney / Q000098:blood supply*; D007676:Kidney Failure, Chronic / Q000000981:diagnostic imaging*; D007677:Kidney Function Tests; D016030:Kidney Transplantation / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D014463:Ultrasonography; D014655:Vascular Resistance / Q000502:physiology*
Farbdopplersonographie von Nierentransplantaten. Ermöglicht der Resistive Index die Diagnose der chronischen Funktionsstörung?