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Renal Resistive Index clinical trials

View clinical trials related to Renal Resistive Index.

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NCT ID: NCT05577039 Completed - Clinical trials for Chronic Kidney Disease

Preoperative RRI and Long-term Risk for CKD

Start date: November 1, 2022
Phase:
Study type: Observational

Renal resistive index (RRI) is calculated from ultrasonographic Doppler measurements of flow velocities in intraparenchymal renal arteries. Normal values are around 0.60, and 0.70 is considered the upper normal threshold in adults. Both preoperative and postoperative elevation of RRI has shown promise in early detection of AKI after cardiac surgery. Further, elevated RRI before coronary angiography is associated with an increased risk of cardiovascular complications up to 1 year after the procedure. The role of preoperative RRI in predicting long-term renal and cardiovascular complications after elective surgery is however not known. The aim of this study is to assess the role of preoperative RRI to predict the risk of persistent renal dysfunction as well as renal- and cardiovascular complications up to 5 years after surgery.

NCT ID: NCT03597074 Completed - Sepsis Clinical Trials

Doppler Ultrasound for Prediction of Reversibility of Acute Kidney Injury in Septic ICU Patients

Start date: March 2, 2017
Phase:
Study type: Observational

Purpose: The aim of this study was to assess the ability of early discrimination between transient and persistent Acute Kidney Injury (AKI) using the color Doppler Ultrasound derived Renal Resistive Index (RI) and semi-quantitative evaluation of intra-renal vascularization in septic patients in an Intensive Care Unit (ICU). Methods: Prospective observational cohort study with unselected, with 32 adult consecutive septic patients. Patients were divided into 3 groups: Group 1: patients without progression to AKI, Group 2: transient AKI, Group 3: persistent AKI.

NCT ID: NCT02041403 Completed - Outcome Clinical Trials

RENAL RESISTIVE INDEX POST-OPERATIVE COMPLICATIONS IN MAJOR SURGERY?

Start date: June 2012
Phase: N/A
Study type: Observational

An observational trial aiming to verify whether does any relationship exist between renal resistive index and postoperative outcome in major high risk surgery