AzTrials
AzTrials

VAP - Ventilator Associated PneumoniaNCT05176353

Ventilator-associated Pneumonia (VAP) Diagnostic Stewardship Trial

A study testing VAP diagnostic stewardship bundle in people with VAP - Ventilator Associated Pneumonia, run by University of Michigan at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This is a prospective pilot/feasibility trial of a bundled diagnostic stewardship intervention at the level of the microbiologic testing pathway in ventilator-associated pneumonia (VAP). Read more about this study

Who is it for?
Any age
Conditions the study is for
VAP - Ventilator Associated Pneumonia
What is being tested?
VAP diagnostic stewardship bundle
Could I receive a placebo?
No, everyone receives an active treatment
How many people
4,892 participants
Where
1 siteUnited States
Study dates
11 Feb 2022to 14 Mar 2023
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • All patients hospitalized within the Michigan Medicine Cardiac Care Unit (CCU, 7D) and the Michigan Medicine Critical Care Medicine Unit (CCMU, 6D)
  • healthcare providers working in units (CCU and CCMU) as part of routine clinical care.

Who cannot join

  • For the study intervention requiring performance of bronchoalveolar lavage rather than endotracheal aspirate for respiratory culture collection, the following are exclusion criteria for performance of bronchoalveolar lavage:
  • international normalized ratio (INR)>2,
  • platelet count <50,
  • gross blood in endotracheal secretions,
  • ratio of arterial oxygen partial pressure (PaO2 in mmHg) to fractional inspired oxygen (FiO2), ratio (P/F ratio)<80,
  • major lung surgery within prior 30 days.
  • healthcare providers that are not as part of routine care in CCU and CCMU

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Michigan

    Ann Arbor, Michigan, 48170

Other trials in United States

About this study

Official title: Implementation of a Diagnostic Stewardship Bundle for Ventilator-associated Pneumonia Among Mechanically-ventilated Patients

This is a prospective pilot/feasibility trial of a bundled diagnostic stewardship intervention at the level of the microbiologic testing pathway in ventilator-associated pneumonia (VAP). The study utilized a pre/post design and was initially registered as a single-arm trial because the study intervention could only be applied prospectively to a single group (all patients hospitalized in study ICUs requiring ventilation during the trial intervention period). The study objectives are to safely and effectively reduce antibiotic overuse and its attendant hazards (adverse drug events, Clostridioides difficile diarrhea and generation of multidrug-resistant organisms) among mechanically-ventilated patients. Participating ICUs will have the following three modifications made in their respiratory culture workflows for mechanically-ventilated patients: 1) providers will be required to select a valid indication for respiratory culture performance (worsening ventilator requirements, purulent sputum production, and/or new radiographic infiltrate on chest imaging); 2) respiratory cultures will be preferentially obtained via bronchoscopic or nonbronchoscopic BAL (by respiratory therapists) rather than via endotracheal aspiration; and 3) BAL samples will be sent for cell count and differentials, and respiratory culture results will not be released for samples with <50% neutrophils. The study will carefully monitor adherence to study interventions, ICU-specific antibiotic utilization rates, and important safety metrics including rates of mortality, ventilator-dependence and ventilator-associated events.

The trial hypotheses are:

  • Implementation of a VAP diagnostic stewardship bundle will be successfully implemented without significant increases in mortality or ventilator-associated events.
  • Implementation of a VAP diagnostic stewardship bundle will be associated with a reduction in ICU-specific antibiotic utilization rates
Read the detailed description

Overdiagnosis of ventilator-associated pneumonia (VAP) is common among mechanically-ventilated patients and contributes to antibiotic overuse and the generation of multidrug resistant organisms within intensive care units (ICUs). Identification of interventions that safely and effectively lower VAP overdiagnosis and antibiotic overuse are important for antimicrobial stewardship programs. Antibiotic stewardship interventions targeting VAP have heretofore focused on therapeutic interventions-antibiotic de-escalation or discontinuation-in established VAP cases, but have not leveraged interventions at the level of the VAP diagnostic testing pathway to minimize overdiagnosis in the first place. Current microbiologic testing practices-specifically, indiscriminate ordering, collection and interpretation of respiratory cultures-incents VAP overdiagnosis and antibiotic overuse.

This is a prospective pilot/feasibility trial of a bundled diagnostic stewardship intervention targeting the microbiologic diagnostic testing pathway among mechanically-ventilated patients. The study utilized a pre/post design and was initially registered as a single-arm trial because the study intervention could only be applied prospectively to a single group (all patients hospitalized in study ICUs requiring ventilation during the trial intervention period). This pilot/feasibility trial will implement system-based changes within ICUs in microbiologic diagnostic testing workflows with the goal of safely lowering antibiotic utilization rates in mechanically-ventilated patients. Specifically, the study will sequentially implement the following 3 changes in the diagnostic testing workflow for clinical providers:

  1. Ordering respiratory cultures:
  2. Current workflow: respiratory cultures can be ordered by frontline clinical providers without preconditions.
  3. Study intervention: frontline clinical providers will be required to select a valid indication for respiratory culture collection through a custom order set in the institutional electronic medical record (EMR).
  4. Collection of respiratory cultures:
  5. Current workflow: providers may collect endotracheal aspirates (proximal lung secretions) or bronchoalveolar lavage (distal lung secretions) for analysis.
  6. Study intervention: providers will be required to preferentially use only bronchoalveolar lavage (BAL) to minimize false positive test results (assuming no contraindications to BAL performance). This will be accomplished through a custom order set in the institutional EMR.
  7. Reporting of respiratory cultures:
  8. Current workflow: positive respiratory culture results are automatically released in the EMR, regardless of likelihood of infection.
  9. Study intervention: respiratory culture results will be automatically released in the EMR only for BAL samples with a polymorphonuclear (PMN) percentage of >50% (to minimize false positive test results). Respiratory culture results for BAL samples with PMN% <50% will be released if the primary team calls the microbiology lab directly and requests result release.

All proposed interventions are within the standard of care for routine clinical practice, but have not been operationalized in parallel to each other and studied explicitly with the goal of reducing antibiotic overuse. The first two study interventions will be implemented at the beginning of the trial period and the final study intervention will be implemented 6 months after. The interventions will be operationalized through use of a custom order set in the institutional EMR and modifications to Clinical Microbiology Laboratory Workflows, as well as through bimonthly provider educational sessions performed by study personnel during morning ICU rounds. Use of the clinical decision support tool within the EMR by frontline providers will be entirely volitional.

The study population in this trial includes all patients admitted to participating study ICUs for routine clinical care. Providers will engage in routine clinical care utilizing the aforementioned modified diagnostic testing workflows and the study will compare safety outcomes and ICU antibiotic utilization rates pre- and post-intervention implementation.

Healthcare providers in participating ICUs will provide routine clinical care utilizing these novel diagnostic testing workflows. Adherence to study interventions by these healthcare providers will be assessed during this study to inform project feasibility on a larger scale.

Being tested
VAP diagnostic stewardship bundle
Keywords
Antimicrobial stewardship, Ventilator-associated pneumonia
Medical subject headings
Pneumonia, Ventilator-Associated

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • VAP diagnostic stewardship bundleOther

    Multifaceted VAP diagnostic stewardship bundle targeting the respiratory culture testing workflow through a custom order set within the institutional electronic medical record. Interventions will be made at the three levels of the diagnostic testing pathway (ordering, collection and reporting of test results). Full details available in detailed study description.

Study groups in NCT05176353
Study groupRoleWhat they receive
VAP diagnostic stewardshipExperimentalIntervention group - all patients hospitalized in study ICUs who were mechanically ventilated Feb 17 2022 - Feb 17 2023.
Receives: Other: VAP diagnostic stewardship bundle
Pre-VAP diagnostic stewardshipNo interventionPre-intervention historical control group - all patients hospitalized in study ICUs who were mechanically ventilated Feb 17 2017-Feb 16 2022. While these patients were all mechanically ventilated, their treatment took place prior to the beginning of the study, under what standard or standards of care existed at the time. They received no treatment during the course of the study. No interventions could be assigned because their treatment was performed prior to study start date.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Total Number of Deaths in the Pre vs Post-intervention Time Periods Among Study Participants Per 1000 Mechanically Ventilated Patient Days

    The number of deaths that occur across the entire study population will be divided by every 1000 days that the total number of patients were hospitalized in study ICUs, receiving mechanical ventilation. Data was collected retrospectively for 5 years prior to the intervention and for 1 year during the intervention period.

    Measured: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).

  2. Change in Ventilator-associated Events (V-A Events) (Using Centers for Disease Control/National Healthcare Safety Network Definitions) Per 1000 Patient Days

    The change in ventilator-associated events that occur across the entire study population will be divided by every 1000 days that the total number of patients were hospitalized in study ICUs, receiving mechanical ventilation, as shown by comparing pre-intervention data to post-intervention data. Data was collected retrospectively for 5 years prior to the intervention and for 1 year during the intervention period.

    Measured: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).

  3. Median Duration of Mechanical Ventilation Per Patient

    Measured: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).

Secondary outcomes (6)
  1. Number of Positive Respiratory Cultures (RCs) Per 1,000 Mechanically-ventilated Patient Days (MVPDs)

    Positive respiratory cultures were defined as any respiratory culture growing a bacterial organism, regardless of total colony-forming units/mL

    Measured: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).

  2. Total ICU Antibiotic Utilization Rates

    Rates are shown as total antibiotic days of therapy per 1000 mechanically-ventilated patient days. A "Day of therapy" is defined as a calendar day in which a patient received a systemically-administered antibiotic, regardless of dose. Receipt of multiple, unique antibiotics on a given calendar day were counted cumulatively, that is, if a patient received 3 unique antibiotics that was counted as three days of therapy.

    Measured: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).

  3. Broad-spectrum ICU Antibiotic Utilization Rates

    Utilization rates are shown as broad-spectrum antibiotic days of therapy per 1000 mechanically-ventilated patient days. Broad-spectrum antibiotics were defined as antibiotics with expected coverage against methicillin-resistant Staphylococcus aureus or Pseudomonas aeruginosa. A "day of therapy" is defined as a calendar day in which a patient received a systemically-administered antibiotic, regardless of dose. Receipt of multiple, unique antibiotics on a given calendar day were counted cumulatively, that is, if a patient received 3 unique antibiotics that was counted as three days of therapy. .

    Measured: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).

  4. Number of Respiratory Cultures Ordered Per 1000 Mechanically-ventilated Patient Days

    Measured: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).

  5. Percentage of Respiratory Cultures Obtained by Bronchoalveolar Lavage (BAL)

    Measured: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).

  6. Percentage of Respiratory Cultures From BAL Samples With Alveolar Neutrophils <50% Following Study Intervention.

    Measured: 6 months post-intervention

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted4 Jan 2022
  2. Study start11 Feb 2022
  3. Primary completion12 Feb 2023
  4. Study completion14 Mar 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Health services research
Allocation
Non-randomised
Intervention model
Parallel groups
Model description
Implementation of a VAP diagnostic stewardship bundled intervention targeting ordering, collection and reporting results of respiratory cultures among mechanically-ventilated patients. Interventions will be implemented through a custom order set within the institutional electronic medical record in 2-month sequential intervals. Safety, ICU-specific antibiotic utilization rates and adherence to study interventions will be monitored.
Masking
None (open label)
Enrolment
4,892 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05176353
Sponsor's protocol ID
HUM00203162
Other IDs
5UL1TR002240-05
Status last verified
Nov 2024
First submitted
23 Nov 2021
Last updated
3 Dec 2024
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing VAP diagnostic stewardship bundle in people with VAP - Ventilator Associated Pneumonia, run by University of Michigan at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 3 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 3 Dec 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Total Number of Deaths in the Pre vs Post-intervention Time Periods Among Study Participants Per 1000 Mechanically Ventilated Patient Days (time frame: During the period of mechanical ventilation (generally ranging between 1-2 days and 1 year).). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Dec 2024.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in