Predicting Development of SCAF in Device Patients

Recruiting now

Conditions studied: Atrial Fibrillation

In brief

Atrial fibrillation (AF) often starts with short episodes of rapid irregular heartbeats that are only detected by implanted pacemakers or defibrillators. Usually people don't know that they have these episodes. Over time, these episodes can happen more often and last for longer periods. In some people, the heart eventually remains permanently in a fast irregular rhythm, known as atrial fibrillation. This condition can lead to strokes and blood clots. If physicians could detect atrial fibrillation at a very early stage they could treat people early and possibly prevent the condition from becoming permanent. People with implanted devices allow a unique opportunity to constantly monitor the heart rhythm so investigators can detect any irregularities immediately. Investigators don't know which people are at risk of developing short episodes of fast irregular heartbeats that can lead to atrial fibrillation. The purpose of this study is to find out if there are proteins or chemical changes in the blood that can predict the risk of developing atrial fibrillation. These chemical changes, also known as biomarkers, may also be able to give investigators other clues about atrial fibrillation.

Key facts

Study ID

NCT02808260

Run by

Ottawa Heart Institute Research Corporation

People needed

500

Starts

2022-09-01

Expected to finish

2034-09-01

Last updated by the study team

2026-07-13

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Dual chamber permanent pacemaker or defibrillator implanted within previous 10 years

You may not qualify if…

• Clinical atrial fibrillation documented by surface ECG (12 lead ECG, Telemetry, Holter)
• Participants considered by the investigator to be unsuitable for the study for the following reason: life expectancy less than 2 years due to concomitant disease
• Participants who are pregnant or breast-feeding
• Congenital heart disease
• Inherited arrhythmia syndrome, i.e. Brugada, long QT interval

Where it is running

• University of Ottawa Heart Institute — Ottawa, Ontario, Canada (enrolling)

Full record on ClinicalTrials.gov

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