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

July 12, 2018 updated by: Evangelos Kaimakamis, Aristotle University Of Thessaloniki

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

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.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Purpose: The aim of this study was to assess the ability of early discrimination between transient and persistent 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). Additionally, the investigators aimed to identify whether these indexes are early predictors of the prognosis of renal function in this group of patients. And compare the diagnostic accuracy of those and other renal indexes for the identification of AKI reversibility.

Methods: This was a prospective observational cohort study with unselected, consecutive septic patients included. Thirty-two adult septic patients hospitalized in a general ICU were studied. After the determination of sepsis, patients were divided into 3 groups: Group 1 included patients without progression to AKI, Group 2 included patients with transient AKI and Group 3 patients with persistent AKI.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
32

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Greece
      • Thessaloniki, Greece, 57010
        • 1st ICU, "G.Papanikolaou" General Hospital of Thessaloniki, Greece

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Subjects were included if they developed sepsis plus AKI during their hospitalization in the ICU, regardless of the underlying cause. The presence of Acute Kidney Injury was determined according to the KDIGO guidelines, i.e. at least stage 1 AKI. The categorization of AKI as transient or persistent was determined by the normalization of the kidney function after the administration of appropriate therapy and support in the ICU environment and after 3 days of hospitalization. All consecutive patients with sepsis were included, with the exception of those surviving less than three days, to determine whether they had AKI

Description

Inclusion Criteria:

  • Septic patients in ICU
  • Age 18 years or older

Exclusion Criteria:

  • ICU stay less than 3 days

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
1
Patients without AKI progression Use of color Doppler Ultrasound derived Renal Resistive Index (RI) and semi-quantitative evaluation of intra-renal vascularization for early prognosis of AKI progression
Diagnostic test: color Doppler Ultrasound derived RI and semi-quantitative evaluation of intra-renal vascularization
Use of color Doppler Ultrasound derived Renal Resistive Index (RI) and semi-quantitative evaluation of intra-renal vascularization for early prognosis of AKI progression
2
Patients with Transient AKI Use of color Doppler Ultrasound derived Renal Resistive Index (RI) and semi-quantitative evaluation of intra-renal vascularization for early prognosis of AKI progression
Diagnostic test: color Doppler Ultrasound derived RI and semi-quantitative evaluation of intra-renal vascularization
Use of color Doppler Ultrasound derived Renal Resistive Index (RI) and semi-quantitative evaluation of intra-renal vascularization for early prognosis of AKI progression
3
Patients with Persistent AKI Use of color Doppler Ultrasound derived Renal Resistive Index (RI) and semi-quantitative evaluation of intra-renal vascularization for early prognosis of AKI progression
Diagnostic test: color Doppler Ultrasound derived RI and semi-quantitative evaluation of intra-renal vascularization
Use of color Doppler Ultrasound derived Renal Resistive Index (RI) and semi-quantitative evaluation of intra-renal vascularization for early prognosis of AKI progression

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
RI as a prognostic factor for AKI persistence
Time Frame: 3 days
without units (range 0 to 1)
3 days

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
semi-quantitative US evaluation of renal vasculature
Time Frame: 3 days
without units (score from 1 to 4)
3 days
FENa (Fractional Excretion of Sodium)
Time Frame: 3 days
% percentage
3 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Aristotle University Of Thessaloniki

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
George Papanicolaou Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Militsa Bitzani, MD, PhD, 1st ICU, "G.Papanikolaou" General Hospital of Thessaloniki, Greece

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 2, 2017

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 31, 2017

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 2, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 27, 2018

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 12, 2018

First Posted (ACTUAL)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 24, 2018

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 24, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 12, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • NT001

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Data sheet can be shared with other researchers as soon as a publication of the results is achieved.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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