Clinical and Urgent Colonoscopy Outcomes Using the Pure-Vu® Cleansing System

June 21, 2023 updated by: Brian Baggott, The Cleveland Clinic

Clinical and Urgent Colonoscopy Outcomes Using the Pure-Vu® Cleansing System in Hospitalized Patients With Lower Gastrointestinal Bleeding: A Single-Center Prospective Pilot Study

The Pure-Vu® System can be effectively used as a cleansing device in patients admitted with acute LGIB to the intensive care unit and the regular nurse floor (RNF) bypassing the need to administer an oral bowel preparation for adequate visualization and hence decreasing time to colonoscopy and improving diagnostic and therapeutic yield.

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.

Detailed Description

Acute lower gastrointestinal bleeding (LGIB), while generally defined as gastrointestinal bleeding distal to the ligament of Treitz, can be categorized into small bowel and colorectal bleeding, two sites with distinct presentations as well as diagnostic and management options (1). Acute LGIB secondary to a colorectal source usually presents with sudden onset hematochezia with or without acute blood loss anemia and hemodynamic instability, and usually leads to multiple invasive procedures and hospitalizations. It accounts for up to one-third of all hospitalizations related to GIB (2). The current guidelines recommend urgent colonoscopy to be performed within 8 to 24 hours of presentation and after adequate colon preparation to improve visualization and diagnostic/therapeutic yield (1). While studies looking at optimal timing of colonoscopy are limited for patients with acute LGIB, a study comparing 48 patients with diverticular bleeding who underwent colonoscopy after rapid polyethylene glycol (PEG) preparation and within 12 hours of presentation with endoscopic hemostasis compared to 73 controls without endoscopic hemostasis, found a significant improvement in outcomes in the group that underwent hemostasis, including bleeding (0% vs. 53%) and hospital length (median of 2 days vs. 5 days) (3). In another RCT of 100 patients presenting with LGIB, colonoscopy within 8 hours of presentation after rapid preparation lead to a more definite diagnosis compared to patients who underwent elective colonoscopy within 96 hours of presentation (4). Urgent colonoscopy however requires the rapid administration of a large volume bowel preparation over 3-4 hours until the rectal effluent is clear (1). Purge preparation can be challenging in critically ill patients and frequently requires the placement of a nasogastric tube for administration of the preparation which could place the patient at risk of aspiration, poor tolerance, and rarely, electrolyte imbalances (1). Moreover, bleeding can subside while awaiting resuscitation and bowel preparation prior to endoscopic intervention, which could lead to a decreased diagnostic and therapeutic yield. The guidelines recommend against unprepped colonoscopy due to poor visualization and increased perforation risk (1). A pilot study looked at the effect of "hydroflush colonoscopy" in acute LGIB with minimally prepped colons (tap water enema without oral preparation). "Hydroflush colonoscopy" was defined as colonoscopy using a combination of a water jet pump irrigation and a mechanical endoscope suction device (BioVac direct suction device). Out of the 12 patients included, the cecum was reached 69% of the time and endoscopic visualization was found to be adequate to find the source of bleeding in all procedures (5). The Pure-Vu® System (MotusGI Ltd.), a novel Food and Drug Administration (FDA) 510k cleared intra-procedural cleansing device, has been recently introduced. The Pure-Vu® System integrates with the colonoscope and generates a pulsed vortex mixture of water and air in order to remove debris and is active at the time of cleansing to evacuate colonic contents simultaneously (6). Its effectiveness has been studied in colonoscopies requiring minimal preparation regimens with excellent and safe results (7,8). A multicenter European feasibility study looked at 47 patients referred for colonoscopy who received a limited bowel preparation and found significant improvement in the proportion of patients with adequate preparation, with a median Boston bowel preparation score (BBPS) increased from 3[0-5] to 9 [8-9] (8). The REDUCE trial (9), another multicenter, single-arm study, was the first trial to study Pure-Vu® in the inpatient setting, which enrolled 95 hospitalized subjects. Adequate bowel preparation improved from 38% (95% CI 28,49) to 96% (CI 90-99) in the evaluated segments. The mean BBPS improved from 1.74 in the left colon, 1.74 in the transverse colon, 1.5 in the right colon to 2.89, 2.91 and 2.86 respectively (p<0.001) (9).

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.
6

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 Locations

  • United States
    • Ohio
      • Cleveland, Ohio, United States, 44195
        • Cleveland Clinic

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

22 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Hospitalized patients in the ICU or the RNF with acute LGIB (defined as maroon-colored stool or bright red blood per rectum with suspicion of acute blood loss anemia, and hemodynamically stable and/or stabilized at the time of procedure . Hospitalized patients include:

    • Patients who develop LGIB while admitted for different reasons
    • Patients transferred from an outside hospital for further management of acute LGIB
    • Patients admitted through the emergency room for management of acute LGIB
  • At least 22 years old
  • Undergoing urgent colonoscopy under monitored anesthesia care or conscious sedation

Exclusion Criteria:

  • Suspicion for bowel obstruction/ stricture
  • Toxic megacolon or severe colitis (determined by degree of colitis on imaging and clinical condition including pain, fevers, abdominal exam, elevated inflammatory markers)
  • Active Diverticulitis

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: Device Feasibility
  • Allocation: N/A
  • Interventional Model: Single Group 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: Pure-Vu Treatment
Participants in this arm will undergo colonoscopy using the Pure-Vu cleansing device.
Device: Pure-Vu Cleansing Device
The Pure-Vu device attaches to the colonoscope and provides colonic cleansing during urgent colonoscopy without the need for a bowel preparation

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
Adequate Bowel Preparation
Time Frame: During the colonoscopy procedure, typically less than 1 hour
The proportion of participants who achieve an adequate bowel preparation to identify bleeding lesions
During the colonoscopy procedure, typically less than 1 hour

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
Diagnostic yield
Time Frame: During the colonoscopy procedure, typically less than 1 hour
The frequency with which investigators are able to successfully identify the source of bleeding.
During the colonoscopy procedure, typically less than 1 hour
Therapeutic Yield
Time Frame: During the colonoscopy procedure, typically less than 1 hour
The frequency with which investigators are able to successfully control bleeding through endoscopic intervention
During the colonoscopy procedure, typically less than 1 hour
Re-bleeding rate
Time Frame: 48 hours post-colonoscopy
The proportion of participants who experience recurrence of bleeding
48 hours post-colonoscopy

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.
The Cleveland Clinic

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.
Motus GI Medical Technologies Ltd

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.
  • Principal Investigator: Brian Baggott, MD, The Cleveland Clinic

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 3, 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.
April 6, 2022

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.
April 6, 2022

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).
January 25, 2021

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.
January 25, 2021

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.
January 29, 2021

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.
June 23, 2023

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.
June 21, 2023

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.
June 1, 2023

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.
  • 20-884

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

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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Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

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