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Journal of Ultrasound in Medicine, Vol 13, Issue 10 791-796, Copyright © 1994 by American Institute of Ultrasound in Medicine

CLINICAL TRIAL

Doppler analysis of hemodialysis grafts: resistive index as a predictor of stenosis

D. E. Baird, D. G. Omdal, S. C. Yuill, M. F. Hansen, L. H. Hassell, M. L. Cockerill and R. A. Bankhead
Department of Radiology, Tripler Army Medical Center, Honolulu, Hawaii 96859-5000.

A series of six hemodialysis vascular access patients was evaluated with duplex Doppler sonography and angiography to identify Doppler sonographic parameters that are predictors of venous outflow stenosis. This preliminary series indicates that no venous outflow stenosis was present angiographically when the resistive index gradient across the venous anastomosis is less than or equal to zero and a significant venous outflow stenosis (50 to 100%) was present when the resistive index gradient is 0.15 or greater (P = 0.002, r = 0.963). Doppler acquisition of resistive index gradients across regions of venous outflow is a promising, noninvasive means of rapid radiologic evaluation of hemodialysis graft patients, especially when the need for angiography is equivocal.


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M. C. Dumars, W. E. Thompson, E. I. Bluth, J. S. Lindberg, M. Yoselevitz, and C. R. B. Merritt
Management of Suspected Hemodialysis Graft Dysfunction: Usefulness of Diagnostic US
Radiology, January 1, 2002; 222(1): 103 - 107.
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Copyright © 1994 by the American Institute of Ultrasound in Medicine.