Concordance Between Central Blood PRessure dEvices In Nephrology Patients (CBP-REIN)

February 10, 2025 updated by: Centre Integre Universitaire de Sante et Services Sociaux du Nord de l'ile de Montreal

Concordance Between Central Blood PRessure dEvices In Nephrology Patients (CBP-REIN)

The most accurate way to determine intra-aortic BP is to obtain invasive measures by vascular catheterization, which is not possible to perform routinely during the regular follow-up of patients. However, in recent years, devices used to estimate central BP have been designed and approved for clinical use. These devices can determine aortic BP in a non-invasive way using various techniques and algorithms and offer a high degree of precision when compared to invasive measurements of intraaortic BP. On the other hand, certain characteristics specific to the different devices mean that the central BP values obtained may not be interchangeable. It is therefore important to determine the degree of agreement of central BP values obtained using commercially available devices.

This study aims to determine the degree of agreement between central BP measurements obtained using 4 devices commonly used to measure central blood pressure, i.e. Mobil-o-Graph NG (IEM, Germany), WatchBP Office (Microlife, Taiwan), Oscar 2 with SphygmoCor inside (SunTech, USA) and BP+ (Uscom, Australia). These four devices record the shape of the pulsatile wave and then derive the central BP using an algorithm. The main differences between these devices lie in this algorithm, or "transfer function,", which is unique to each and the calibration used. All use a brachial cuff to capture the pulse waveform and can easily be used in clinical practice.

Study Overview

Status

Status

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

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.

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.
Interventional

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.
119

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Canada
    • Quebec
      • Montréal, Quebec, Canada, H4J1C5
        • Hôpital du Sacré-Cœur de Montréal

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

- Age 18-80 years old

Exclusion Criteria:

  • Ongoing atrial fibrillation
  • Arm circumference incompatible with the blood pressure cuffs for all devices (<18 cm or > 50 cm)
  • Incapacity to give consent

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

  • Primary Purpose: Diagnostic
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
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.
Experimental: Advanced CKD group
Patients with eGFR < 30 ml/min/1.73m2 not on dialysis
Device: Brachial and Central BP measurements with Mobil-o-Graph NG device (IEM), WatchBP Office device (Microlife), BP+ device (Uscom) and Oscar 2 with SphygmoCor inside device (SunTech)
All participants will have three readings at 1-min interval after a 5-min seated rest with each device. The order in which each device will be tested is randomized.
Experimental: Dialysis groups
Patients on hemodialysis or peritoneal dialysis
Device: Brachial and Central BP measurements with Mobil-o-Graph NG device (IEM), WatchBP Office device (Microlife), BP+ device (Uscom) and Oscar 2 with SphygmoCor inside device (SunTech)
All participants will have three readings at 1-min interval after a 5-min seated rest with each device. The order in which each device will be tested is randomized.
Experimental: Hypertension group
Patients with BP > 135/85 mmHg or taking any antihypertensive medication with normal kidney function (eGFR > 60 ml/min/1.73m2)
Device: Brachial and Central BP measurements with Mobil-o-Graph NG device (IEM), WatchBP Office device (Microlife), BP+ device (Uscom) and Oscar 2 with SphygmoCor inside device (SunTech)
All participants will have three readings at 1-min interval after a 5-min seated rest with each device. The order in which each device will be tested is randomized.
Active Comparator: Control group
Normotensive patients without any antihypertensive drugs or chronic kidney disease
Device: Brachial and Central BP measurements with Mobil-o-Graph NG device (IEM), WatchBP Office device (Microlife), BP+ device (Uscom) and Oscar 2 with SphygmoCor inside device (SunTech)
All participants will have three readings at 1-min interval after a 5-min seated rest with each device. The order in which each device will be tested is randomized.

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
Central SBP difference
Time Frame: at enrollment (time 0)
Differences in the central SBP measured by each device
at enrollment (time 0)

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
Brachial SBP difference
Time Frame: at enrollment (time 0)
Differences in the brachial cuff SBP measured by each device
at enrollment (time 0)
Central DBP difference
Time Frame: at enrollment (time 0)
Differences in the central DBP measured by each device
at enrollment (time 0)
Brachial DBP difference
Time Frame: at enrollment (time 0)
Differences in the brachial cuff DBP measured by each device
at enrollment (time 0)

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.
Centre Integre Universitaire de Sante et Services Sociaux du Nord de l'ile de Montreal

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.
April 26, 2021

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.
November 12, 2024

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.
November 12, 2024

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).
May 12, 2023

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 25, 2023

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 27, 2023

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.
March 25, 2025

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.
February 10, 2025

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.
February 1, 2025

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.
  • CBP-REIN

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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