Renal Resistive Index

The prognostic significance of renal resistive index in essential hypertension.

To the Editor: I read with great interest the paper by Doi et al that was very recently published in Hypertension. The authors demonstrated that, after a mean follow-up period of 3.1 years, renal resistive index (RI) has been found to be an independent predictor of worse cardiovascular and renal outcomes in essential hypertensive patients. Although the study is informative, some additional data...

Renal resistive index and mortality in chronic kidney disease.

Renal resistive index (RRI) measured by Doppler ultrasonography is associated with cardiovascular events and mortality in hypertensive, diabetic, and elderly patients. We studied the factors associated with high RRI (≥0.70) and its associations with mortality in chronic kidney disease patients without renal artery stenosis. We included 1962 patients with an estimated glomerular filtration rate ...

Renal resistive index: a case of mistaken identity.

Determinants and Prognostic Significance of the Renal Resistive Index

Background: The noninvasive assessment of renal hemodynamics is currently possible by assessing the renal resistive index (RRI) derived from intrarenal Doppler arterial waveforms as (peak systolic velocity – end-diastolic velocity)/peak systolic velocity. In this review, we outline the important determinants of the RRI to clarify the true identity of the RRI and highlight its potential diagnost...

Significant Correlation between Brachial Pulse Pressure Index and Renal Resistive Index.

BACKGROUND The renal resistive index (RI) is calculated as (peak systolic velocity - minimum diastolic velocity)/peak systolic velocity, and has been significantly associated with renal function. Pulse pressure index (PPI) is derived from a formula similar to renal RI, i.e. (systolic blood pressure - diastolic blood pressure)/systolic blood pressure. The purpose of this study was to investigate...