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Detection Rate of Atrial Fibrillation in Patients Implanted With ILRs

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ClinicalTrials.gov Identifier: NCT02843516
Recruitment Status : Completed
First Posted : July 26, 2016
Last Update Posted : July 26, 2016
Sponsor:
Information provided by (Responsible Party):
Peter J Pugh, Cambridge University Hospitals NHS Foundation Trust

Brief Summary:

Implantable Loop Recorders (ILRs), are subcutaneous heart monitors, which are implanted for different reasons including syncope (fainting), pre syncope (near fainting), palpitations and stroke. They monitor the heart and detect abnormalities.

Atrial fibrillation (irregular heart rhythm),is a common cardiac arrhythmia associated with a five-fold risk of stroke. Atrial Fibrillation increases the risk of stroke in patients to a different degree according to a risk stratification score. Anticoagulation is recommended to all high-risk patients.

Recent published studies have shown a high incidence of Atrial Fibrillation detected by ILRs in patients with previous stroke.

It is not known whether a similar incidence of Atrial Fibrillation occurs in patients without previous stroke. It is also not know ''how much'' Atrial Fibrillation is necessary to increase the risk of stroke, how relevant the finding of Atrial Fibrillation is and whether everybody with Atrial Fibrillation should have anticoagulation or whether a "bit of Atrial Fibrillation" is actually normal in most people.

The purpose of this study is to identify and compare the rate and the burden of Atrial Fibrillation (more or less than 30 seconds) in patients with and without previous stroke.

Medical notes and Implantable Loop Recorder records of the patients that had the devices implanted in Addendbrooke's Hospital from March 2009 up to 1 month after the implantation of the latest device will be inspected in order to identify whether the device had detected Atrial Fibrillation and if so the burden of Atrial Fibrillation in the two different groups of patients (with and without previous stroke).

The risk of stroke for each patient will be calculated. Echocardiographic (ultrasound scan of the heart)risk factors for Atrial Fibrillation will be identified and compared between the two groups.

This is going to be a retrospective study and we will be inspecting patients' data only.


Condition or disease Intervention/treatment
Atrial Fibrillation Other: No intervention

Detailed Description:

Implantable Loop Recorders (ILRs), are subcutaneous heart monitors, which are implanted for different reasons including syncope (fainting), pre syncope (near fainting), palpitations and stroke. They monitor the heart and detect abnormalities.

Atrial fibrillation (irregular heart rhythm),is a common cardiac arrhythmia associated with a five-fold risk of stroke. Atrial Fibrillation increases the risk of stroke in patients to a different degree according to a risk stratification score. Anticoagulation is recommended to all high-risk patients.

Recent published studies have shown a high incidence of Atrial Fibrillation detected by ILRs in patients with previous stroke.

It is not known whether a similar incidence of Atrial Fibrillation occurs in patients without previous stroke. It is also not know ''how much'' Atrial Fibrillation is necessary to increase the risk of stroke, how relevant the finding of Atrial Fibrillation is and whether everybody with Atrial Fibrillation should have anticoagulation or whether a "bit of Atrial Fibrillation" is actually normal in most people.

The purpose of this study is to identify and compare the rate and the burden of Atrial Fibrillation (more or less than 30 seconds) in patients with and without previous stroke.

Medical notes and Implantable Loop Recorder records of the patients that had the devices implanted in Addendbrooke's Hospital from March 2009 up to 1 month after the implantation of the latest device will be inspected in order to identify whether the device had detected Atrial Fibrillation and if so the burden of Atrial Fibrillation in the two different groups of patients (with and without previous stroke).

The risk of stroke for each patient will be calculated. Echocardiographic (ultrasound scan of the heart)risk factors for Atrial Fibrillation will be identified and compared between the two groups.

This is going to be a retrospective study and we will be inspecting patients' data only..

Layout table for study information
Study Type : Observational
Actual Enrollment : 500 participants
Observational Model: Case-Control
Time Perspective: Retrospective
Official Title: Detection Rate of Atrial Fibrillation in Patients Implanted With ILRs
Study Start Date : March 2009
Actual Primary Completion Date : June 2016
Actual Study Completion Date : June 2016

Resource links provided by the National Library of Medicine


Group/Cohort Intervention/treatment
patients with stroke
patients with stroke
Other: No intervention
No intervention

patients without stroke
patients without stroke
Other: No intervention
No intervention




Primary Outcome Measures :
  1. Incidence of Atrial Fibrillation in patients with and without previous stroke [ Time Frame: 6 years ]


Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
All patients implanted with Implantable Loop Recorders from March 2009 up to 1 month (first follow up) of the latest ILR implantation.
Criteria

Inclusion Criteria:

  • Male or Female, aged 18 years or above.
  • Patients with Implantable Loop Recorder

Exclusion Criteria:

- None


Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02843516


Sponsors and Collaborators
Cambridge University Hospitals NHS Foundation Trust
Investigators
Layout table for investigator information
Principal Investigator: Peter Pugh, MBBS, MRCP Cambridge University Hospitals NHS Foundation Trust
Layout table for additonal information
Responsible Party: Peter J Pugh, Consultant Cardiologist, Cambridge University Hospitals NHS Foundation Trust
ClinicalTrials.gov Identifier: NCT02843516    
Other Study ID Numbers: 190674
First Posted: July 26, 2016    Key Record Dates
Last Update Posted: July 26, 2016
Last Verified: July 2016
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Additional relevant MeSH terms:
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Atrial Fibrillation
Arrhythmias, Cardiac
Heart Diseases
Cardiovascular Diseases
Pathologic Processes