Tiny heart device tested in MRI study for common type of heart failure
NCT ID NCT07093528
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study uses a special heart MRI to see if a device called a coronary sinus reducer can improve blood flow in patients with heart failure with preserved ejection fraction (HFpEF) and coronary microvascular dysfunction (small vessel disease). The device is implanted to reroute blood flow in the heart. Researchers will measure changes in blood flow to the inner layer of the heart muscle. The study enrolls 25 adults who are already in a larger trial of the device.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Coronary sinus reducer (a device implanted to improve blood flow in the heart)
- What this could lead to
- If successful, this could show that the coronary sinus reducer improves blood flow to the heart muscle in patients with heart failure and small vessel disease.
- What could go wrong
- This is a very small, early substudy (25 people) that only measures changes on MRI. It may not prove any real-world benefit or safety.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for CORONARY MICROVASCULAR DYSFUNCTION are added.
By submitting, you agree to our Terms of use
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
-
Mayo Clinic
RECRUITINGRochester, Minnesota, 55905, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can shedding pounds reboot the Heart's exercise engine?
- Keto vs. Low-Fat: which diet helps heart failure patients move better?
- Zapping lung nerves could ease heart Failure-Related high blood pressure
- Stiff arteries may hold key to heart failure progression
- Simple breathing training may ease heart failure symptoms in seniors
- Could a single iron infusion ease heart failure in seniors?