Application of renal Doppler sonography in the diagnosis of obstructive uropathy in patients with spinal cord injury

Archives of Physical Medicine and Rehabilitation
Fan-Fei TsengYaw-Zen Chen

Abstract

To assess renal resistive index (RI) changes in patients with spinal cord injury (SCI) who have obstructive uropathy and to determine if an RI of 0.7 or more is useful in identifying such patients. Prospective cross-sectional study. Rehabilitation hospital affiliated with a medical university. A convenience sample of 99 kidneys of 51 SCI patients (38 men, 13 women; mean age, 38.8+/-14.0 y) with neuropathic bladder dysfunction. Ultrasonic examination to assess the degree of hydronephrosis, Doppler sonography to calculate renal vascular RIs, and radioisotopic renography to assess renal function and to determine excretory curves. Kidneys were assigned to control or obstructive uropathy groups, and RIs were compared for statistical significance (Student t test) and to assess whether an RI of 0.7 is a distinguishing criterion. RI and sensitivity. Average RIs were .58+/-.07 in the control group (71 kidneys) and .65+/-.08 in the uropathy group (28 kidneys) (P<.001). The sensitivity of using an RI of 0.7 or more to identify patients with obstructive uropathy was 39%. The c statistic of the receiver operating characteristic curve was .72. RIs increased in SCI patients with obstructive uropathy. In patients with SCI, urinary findings fit...Continue Reading

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Citations

Dec 20, 2011·The Journal of Urology·Anne P CameronKatherine G Schomer

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