Differences in ECG- vs. proLonged cardIac MonItor-DeTected Atrial Fibrillation in STROKE Patients (DELIMIT AF-STROKE)

September 15, 2026 updated by: Luciano A. Sposato

Differences in ECG- vs. proLonged cardIac MonItor-DeTected Atrial Fibrillation in STROKE Patients

The present study is an investigator-initiated, single-center, retrospective study based on data from the London Ontario Stroke Registry (LOSR), aiming to compare the characteristics and outcomes of ECG-detected and Device-Detected atrial fibrillation in patients with ischemic stroke and transient ischemic attack.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

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

Patients with ischemic stroke and transient ischemic attack (TIA) without known atrial fibrillation (AF) are investigated with Prolonged Cardiac Monitoring (PCM) to detect AF. It is unclear if AF detected on 12-lead ECG after stroke occurrence bears the same risk of stroke as Device-detected AF. The investigators hypothesize, that Device-detected AF has a lower risk of ischemic stroke recurrence. The investigators will conduct a retrospective analysis of prospectively collected data from consecutive patients enrolled in the London Ontario Stroke Registry, (Ontario, Canada). The primary outcome will be a recurrent ischemic stroke at the end of the available follow-up window. The investigators will include ischemic stroke and TIA patients with ECG-detected AF and those with Device-detected AF on at least 7 days of Holter monitoring.

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 (Estimated)

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.
366

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

  • Canada
    • Ontario
      • London, Ontario, Canada, N6A 5A5
        • Heart & Brain Lab, Western University

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

No

Sampling Method

Probability Sample

Study Population

Patients with an acute ischemic stroke or TIA in the London Ontario Stroke Registry without known AF, who are newly diagnosed with AF on a 12-lead ECG or a ≥7-day external cardiac monitor.

Description

Inclusion Criteria:

  • Age ≥18 years
  • Patient with a diagnosis of ischemic stroke or TIA.
  • ECG-diagnosed AF or PCM-detected AF post ischemic stroke or TIA

Exclusion Criteria:

  • Individuals younger than18 years-old
  • Patients without IS or TIA diagnosis

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.
ECG-Detected AF
Patients with atrial fibrillation detected on 12-lead ECGs done post-stroke
Diagnostic test: ECG
Electrocardiogram
Device-Detected AF
Patients with atrial fibrillation detected on prolonged Holter monitoring lasting at least 7 days.
Diagnostic test: Prolonged cardiac monitoring
Prolonged cardiac monitoring

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
Number of Participants with Recurrent Ischemic Stroke at End of available Follow-up Time
Time Frame: Duration of follow-up - minimum of 3 months after the first encounter with the stroke team
Documented recurrent ischemic stroke
Duration of follow-up - minimum of 3 months after the first encounter with the stroke team

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
Death
Time Frame: Duration of follow-up - minimum of 3 months after the first encounter with the stroke team
Number of patients dead at the end of the available follow-up
Duration of follow-up - minimum of 3 months after the first encounter with the stroke team
Readmission for decompensated AF or heart failure
Time Frame: Duration of follow-up - minimum of 3 months after the first encounter with the stroke team
Prevalence of readmission for decompensated AF or heart failure (HF) in each group
Duration of follow-up - minimum of 3 months after the first encounter with the stroke team
Prevalence of risk factors, cardiovascular comorbidities, and structural heart disease
Time Frame: Documented at baseline.
Proportion with vascular risk factors, cardiovascular comorbidities, and structural heart disease in each group
Documented at baseline.

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.
Luciano A. Sposato

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: Luciano Sposato, MD, MBA (PI), London Health Sciences Centre, Western University (London, ON. Canada)

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.
May 1, 2023

Primary Completion (Estimated)

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.
July 20, 2027

Study Completion (Estimated)

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.
October 20, 2027

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).
March 31, 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.
April 20, 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.
April 21, 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.
September 18, 2026

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.
September 15, 2026

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.
September 1, 2026

More Information

Terms related to this study

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.
  • ReDA ID 13446

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Individual patients data will be made available upon reasonable request, conditional to approval from Western University Ethics Review Board

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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