Heart failure study pulled before it even started
NCT ID NCT04207476
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study planned to test whether an electromagnetic resonator could change how the autonomic nervous system works in people with heart failure. It would have included 20 heart failure patients and 20 healthy volunteers. However, the study was withdrawn before enrolling any participants, so no results are available.
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.
- Started
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Jul 2021
- Finished
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Oct 2022
- 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 90 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: 1. Male and female patients more than 18 years old with LVEF of \< 40%(N=20) 2. Healthy age matched controls (N=20) 3. Ability to lay in a reclining chair for at least 60 minutes Exclusion Criteria: * 1\. Inability to provide consent 2. Significant valvular disorder (i.e., prosthetic valve or hemodynamically relevant valvular diseases) 3. Recent (\<6 months) stroke or myocardial infarction 4. Severe heart failure (NYHA IV) 5. Hemodialysis 6. Recurrent vaso-vagal syncopal episodes 7. Unilateral or bilateral vagotomy 8. Pregnancy or breast feeding
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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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University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, 73117, United States