Magnetocardiography (MCG) Parameters in the Prediction of Future ICD Therapy
This study explores a new, simpler way to check your heart called Magnetocardiography (MCG). It uses special sensors to measure the tiny magnetic fields your heart creates. Unlike older versions, this new MCG machine is portable and works in a normal room, not a special shielded one, making it more practical. Researchers want to see if this test can find early signs of serious heart rhythm problems that could lead to sudden cardiac arrest. If it can, it might help doctors know who would benefit from an Internal Cardioverter Defibrillator (ICD) – a small device implanted to correct dangerous heart rhythms – before problems become severe. This is an observational study, meaning you won't get any treatment as part of it, just a test.
At a glance
What is this study about?
Doctors are always looking for better ways to understand heart health, especially for people who might be at risk of sudden, life-threatening heart rhythm problems. Sometimes, a severe heart rhythm disturbance can cause the heart to stop suddenly, which is very serious. To help prevent this, some people get a small device called an Internal Cardioverter Defibrillator (ICD) implanted. This device monitors the heart and can deliver an electrical shock to correct dangerous rhythms.
This study is looking at a new type of heart test called Magnetocardiography (MCG). It's a bit like an ECG (electrocardiogram), but instead of measuring electrical signals on your skin, it measures the tiny magnetic fields your heart produces. These magnetic fields can give doctors even more detailed information about how your heart's electrical system is working. Older MCG machines were big and needed special, quiet rooms, which made them difficult to use widely. However, a new, portable MCG machine has been developed that can be used in a normal clinic room.
Researchers want to find out if this new, easier MCG test can help predict who might need an ICD in the future. They will be looking for specific patterns in the MCG results that might signal a risk of serious heart rhythm problems. By identifying these patterns, doctors might be able to offer earlier or better care to people at risk. This study doesn't involve any new treatments; it's simply trying to see if this new test can give doctors useful information to help patients.
Key takeaways
- It tests a new, easier heart scan called MCG.
- Aims to predict risk of serious heart rhythm problems.
- Could help doctors know who benefits from an ICD sooner.
- The test is painless and doesn't touch your body.
- No new treatments or medications are involved in this study.
- Help advance understanding of heart health without personal medical recommendations.
Who may be eligible?
You might be able to take part in this study if you are 18 years old or older and are currently seeing a heart specialist (cardiologist) who thinks you might need an ICD.
However, you won't be able to join if you have certain conditions, like being unable to lie still for 5 minutes, currently having a heart attack, or if your doctor determines you are too unwell. Also, if you already have certain metal implants in your chest, like a pacemaker or a defibrillator, you wouldn't be in the main part of the study, but a smaller group might be set up for people with these devices.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Are you 18 years old or over?
- Are you able to give your clear consent to participate?
- Are you able to lie still on a bed, possibly tilted, for 5 minutes?
- Do you *not* currently have a heart attack or are considered very unwell by your doctor?
- Do you *not* have metal implants in your chest, like a pacemaker (though a special group might exist for this)?
What does participation involve?
If you join this study, you will have a special heart test called a Magnetocardiogram (MCG). This test involves lying still on a bed that might be slightly tilted (up to 30 degrees) for about 5 minutes while the MCG machine measures your heart's magnetic fields. It's a non-contact test, meaning nothing touches your skin directly. This is an observational study, so you won't be given any new medications or treatments as part of it. The study will look at your MCG results and compare them with information about any future ICD therapies you might receive as part of your normal medical care. The total duration of your direct involvement would be the time it takes for the MCG test.
Potential risks and benefits
Locations (1)
- University Hospital Coventry and Warwickshire NHS TrustVerified postcodeCoventry, United Kingdom
Common questions
What is an ICD?
An ICD (Implantable Cardioverter Defibrillator) is a small device placed in your chest that monitors your heart rhythm and can deliver an electrical shock to correct very fast or dangerous heartbeats.
Is the MCG test painful?
No, the MCG test is painless. It's a non-contact test, so nothing touches your skin. You just lie still for a few minutes.
Will I get my MCG test results?
The study aims to gather information for research purposes. While the results won't be used to guide your immediate medical care, you can discuss with the study team whether you'll receive a summary of findings after the study is complete.
Does this study involve new medicine?
No, this study does not involve new medications or treatments. It is purely an observational study to evaluate a new diagnostic test.
How long will the MCG test take?
The actual MCG recording only takes about 5 minutes, but the whole appointment might be a bit longer to allow for preparation and explanations.
How to find out more
Always speak to your GP or specialist before deciding to take part in a study.
Discussion
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