Occult Paroxysmal Atrial Fibrillation in Patients With Non-cardioembolic Ischemic Stroke of Determined Mechanism

August 14, 2013 updated by: Richard Bernstein, Northwestern University
The aim of this study is to determine the yield of 3 weeks outpatient mobile cardiac monitoring for detection of atrial fibrillation in patients with history of stroke of known cause.

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.

Detailed Description

Patients will be recruited to wear a outpatient mobile cardiac monitoring device for detection of atrial fibrillation in patients with a history of stroke of known case. Their are not study treatments or interventions, this is an observational trial. Eligible patients must be >50 years old, have a history of ischemic stroke or transient ischemic attack with a documented brain infarction within the prior 12 months. If patients are on anticoagulation therapies, they are eligible for enrollment if the long-term strategy for stroke prevention is anti-platelet therapy and not the oral anti-coagulant itself. Patients must not have an detection of AF and then must successfully activate the lifeStar device for enrollment. At the end of three weeks, the LifeStar device will be over-read and scored for the presence of AF and other clinically significant arrhythmias by the study electrophysiologist, who will determine the occurrence and burden of AF.

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.
49

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
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Northwestern 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

50 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients with history of stroke of known mechanism age greater than 50

Description

Inclusion Criteria:

  1. Age > 50
  2. Ischemic stroke, or transient ischemic attack with documented acute brain infarction, within prior 6 months.
  3. Patient does not merit indefinite oral anticoagulation. (Patients requiring temporary OAC for purposes other than recurrent stroke prevention, such as treatment of a deep venous thrombosis, are eligible for enrollment if the long-term secondary stroke preventive strategy is anti-platelet therapy and not OAC).
  4. Stroke mechanism is determined to be lacunar stroke, large vessel intracranial atherosclerosis, large vessel extracranial atherosclerosis, or a combination thereof.
  5. Patient has been evaluated with at least a 12 lead EKG and at least one day of in-patient or out-patient cardiac telemetry, with no detection of AF or atrial flutter.
  6. Detection of AF or atrial flutter would change secondary prevention antithrombotic strategy (eg to indefinite OAC).
  7. Patient receives and successfully activates LifeStar ACT device.
  8. Patient or legally authorized representative signs informed consent.

Exclusion Criteria:

  1. Known history of AF or atrial flutter.
  2. Patient has defibrillator or pacemaker capable of detecting AF.
  3. Patient has indication for indefinite OAC.
  4. Patient has indefinite contra-indication to OAC. (Patients with temporary ineligibility for OAC, for example due to the need for invasive medical procedures or large acute brain infarction, are eligible for enrollment).
  5. Stroke due to known cause not listed in inclusion criterion 4.
  6. Cardioembolic stroke.
  7. Inability to comply with LifeStar ACT monitoring regimen.

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

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
Time Frame
Detection of any episode of AF >30 seconds during 21 days of mobile outpatient cardiac telemetry
Time Frame: 21 days
21 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
Time Frame
Recurrent ischemic stroke
Time Frame: 2 years
2 years

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.
Northwestern University

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.
LifeWatch Services, Inc.

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: Richard Bernstein, MD, PhD, Northwestern University

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

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 1, 2010

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.
May 1, 2012

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.
May 1, 2013

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).
August 3, 2011

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.
August 4, 2011

First Posted (Estimate)

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.
August 5, 2011

Study Record Updates

Last Update Posted (Estimate)

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.
August 15, 2013

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.
August 14, 2013

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.
August 1, 2013

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.
  • Lifewatch

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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