The Impact of Expandable Cryoballoon on Autonomic Control of the Heart (NCT06053606) | Clinical Trial Compass
Active — Not RecruitingNot Applicable
The Impact of Expandable Cryoballoon on Autonomic Control of the Heart
Poland100 participantsStarted 2024-05-10
Plain-language summary
Approximately 40% of patients following cryoballoon ablation show signs of parasympathetic denervation. The presence of such effect is related to better outcomes in terms of clinical efficacy (freedom from atrial fibrillation). It could be hypothesized that larger sized balloon (POLARxFIT system) because of more antral position within the left atrium (and hence smaller distance from ganglionated plexi) might enhance this beneficial modulation of the autonomic system of the heart. This study intends to compare the effects of cryoablation employing expandable balloon (POLARxFIT) vs. standard balloon (POLARx) on autonomic system of the heart.
Who can participate
Age range
18 Years – 79 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:
* primary PVI
* paroxysmal atrial fibrillation
* sinus rhythm at the admission
* participant meets clinical criteria for PVI
Exclusion Criteria:
* LA diameter \<38 mm or \>50 mm
* LVEF \<40%
* intrinsic sinus node disease
* advanced atrioventricular block (PR interval \>300 ms, II or III degree AV block)
* previous cardioneuroablation procedure
* pregnancy
* contraindications to anticoagulation treatment
* any other clinical contraindications to PVI
* known atropine intolerance
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
difference in the rate of persistent parasympathetic modulation