Tiny study probes whether zapping heart scars helps pumping
NCT ID NCT04757168
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looked at whether electrically stimulating scarred heart muscle after a heart attack could improve how well the heart contracts. Ten patients undergoing a standard procedure for abnormal heart rhythms had their heart function measured before and after stimulation of the scar area. The goal was to see if local and overall heart pumping improved, even briefly.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could point toward a new way to improve heart function in people with scarred heart muscle after a heart attack.
- What could go wrong
- This is a very small, early study with only 10 participants, so results may not apply to everyone. It only measures short-term changes during a procedure, not long-term benefits.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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10 people
The number who actually took part.
- Started
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Feb 2022
- Finished
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Jan 2024
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 85 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: \- Patients who should undergo ventricular tachycardia (VT) ablation after a myocardial infarction according to current recommendations, namely: patients with ischemic heart disease (ICD) and with episodes of sustained ventricular tachycardia responsible for internal electric shocks by the implantable automatic defibrillator (ICD) (grade IB recommendation) OR * patients with an MIC and an ICD, presenting a first episode of sustained ventricular tachycardia (grade IIa, B recommendation) * Affiliated with a social protection scheme * Having signed an informed consent Exclusion Criteria: * Contraindication or non-indication for ventricular tachycardia ablation * Women who are pregnant or of childbearing age and without contraception, breastfeeding women * Patients without ischemic heart disease * Patients under guardianship, curatorship or legal protection.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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ROLLIN Anne
Toulouse, CHU de Toulouse, 31059, France
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