Using renal resistive index to predict acute kidney injury progression in ICU patients

The Role of Renal Resistive Index (RI) in Predicting Acute Kidney Injury Progression and Need for Renal Replacement Therapy in Patients Followed in the Intensive Care Clinic

Observational Gulhane Training and Research Hospital · NCT06995222

This study is testing if a special ultrasound measurement can help doctors predict how acute kidney injury will progress in ICU patients.

Quick facts

Study typeObservational
Enrollment120 (estimated)
Ages18 Years and up
SexAll
SponsorGulhane Training and Research Hospital Government
Locations1 site (Ankara, Türkiye)
Trial IDNCT06995222 on ClinicalTrials.gov

What this trial studies

This observational study investigates the role of renal resistive index (RRI) in predicting the progression of acute kidney injury (AKI) in patients admitted to the intensive care unit (ICU). It aims to evaluate the effectiveness of RRI, measured through Doppler ultrasound, as a biomarker for early detection of AKI and its potential outcomes. The study will include patients over 18 years old who meet specific KDIGO criteria for AKI within the first 24 hours of ICU admission. By analyzing RRI data, the researchers hope to improve understanding of renal perfusion and its implications for patient management in critical care settings.

Who should consider this trial

Good fit: Ideal candidates for this study are adults over 18 years old who have been diagnosed with stage 1 or stage 2 acute kidney injury within the first 24 hours of ICU admission.

Not a fit: Patients with chronic kidney disease, those who are pregnant, or individuals with postrenal acute kidney injury will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to earlier detection and better management of acute kidney injury in critically ill patients.

How similar studies have performed: Previous studies have shown that renal resistive index is a promising marker for early detection of renal injury, indicating potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Being over 18 years of age
2. Having KDIGO stage 1 or stage 2 acute kidney injury within the first 24 hours of admission

Exclusion Criteria:

* 1\. Patients who did not provide a consent form for participation in the study 2. Patients under 18 years of age 3. Pregnant women 4. Patients with postrenal acute kidney injury 5. Patients 24 hours after the diagnosis of acute kidney injury 6. Patients with acute kidney injury in the recovery period 7. Patients who were evaluated as KDIGO ABH stage 3 during hospitalization 8. Patients with a known history of renal artery stenosis 9. Patients with a diagnosis of cardiac arrhythmia 10. Patients with a diagnosis of chronic kidney disease and a glomerular filtration rate below 30 ml/min/1.73m2 11. Patients with intra-abdominal pressure above 20 mmHg 12. Patients with a hospitalization period of less than 24 hours

Where this trial is running

Ankara, Türkiye

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Akut Kidney InjuryRenal Replacement Therapy for Acute Kidney Injury in ICUakut kidney injuryrenal resistive indexrenal replacement therapyintensive care
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.