Ultrasound Doppler renal resistive index

Ultrasound Doppler renal resistive index: a useful tool for the management of the hypertensive patient

The Doppler-derived renal resistive index has been used for years in a variety of clinical settings such as the assessment of chronic renal allograft rejection, detection and management of renal artery stenosis, evaluation of progression risk in chronic kidney disease, differential diagnosis in acute and chronic obstructive renal disease, and more recently as a predictor of renal and global out...

Doppler ultrasound in renal transplantation.

resistive and pulsatility index (RI, PI ). Both are equally Introduction as useful although the RI is probably more commonly used. An RI <0.7 is normal, >0.9 abnormal, and Colour Doppler ultrasound facilitates not only a global between there is a large grey area. A PI <1.5 is assessment of the intrarenal vasculature but can also normal, and >1.8 abnormal. The higher the RI or PI be targetted to...

The Usefulness of Pulsatile Flow Detection in Measuring Resistive Index in Renal Doppler US

OBJECTIVE To assess the usefulness of pulsatile flow detection (PFD), a newly developed function of color Doppler US, in measuring resistive index (RI) in renal Doppler US and to compare it with conventional color Doppler (CCD). MATERIALS AND METHODS Fifty-six kidneys in 31 patients were randomly selected and divided into two groups. In group A, RI was measured first with the aid of CCD, and ...

Doppler resistive index to reflect regulation of renal vascular tone during sepsis and acute kidney injury

INTRODUCTION Renal resistive index (RI), determined by Doppler ultrasonography, directly reveals and quantifies modifications in renal vascular resistance. The aim of this study was to evaluate if mean arterial pressure (MAP) is determinant of renal RI in septic, critically ill patients suffering or not from acute kidney injury (AKI). METHODS This prospective observational study included 96 p...

Doppler sonography in renal artery stenosis--does the Resistive Index predict the success of intervention?