A Study Testing a New Heart Scan Method to Improve Pacemaker Treatment for Heart Failure (NCT07084467) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
A Study Testing a New Heart Scan Method to Improve Pacemaker Treatment for Heart Failure
United Kingdom400 participantsStarted 2025-08-01
Plain-language summary
Cardiac resynchronization therapy (CRT) is a device treatment for patients with heart failure which cannot be managed by medications alone. CRT can help the heart contract more efficiently and improve the pumping function. However, many patients do not benefit from this treatment. Therefore, a better selection tool will help us to determine the most suitable patients to receive this treatment. A new measure of pumping function of the heart called: first-phase ejection fraction or EF1 has been shown a good tool to select suitable patients for CRT. EF1 is a sensitive measurement of heart function and can be easily measured by echocardiography (an ultrasound heart scan).
The purpose of this study is to examine whether this new measurement (EF1) can predict outcomes and response to CRT treatment.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Age 18 years or older
* On optimal medical therapy for heart failure
* Meets standard guideline criteria for CRT (including conduction system pacing), specifically:
* NYHA class II to IV
* Left ventricular ejection fraction (EF) ≤ 35%
* QRS duration \> 130 ms
Exclusion Criteria:
* Co-morbidities likely to reduce life expectancy to less than 6 months
* Major cardiovascular event within the past 6 weeks
* More than mild aortic stenosis
* Receiving continuous or intermittent infusion therapy for heart failure
* Poor ultrasound acoustic window preventing adequate imaging
* Unable to give informed consent
* Currently participating in another interventional study
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Volumetric response of left ventricle
Timeframe: 6 months post CRT implantation or 6 months post CRT optimisation