AIM HIGHer Clinical Trial for Heart Failure with Higher Ejection Fraction

This study is testing a treatment called Cardiac Contractility Modulation (CCM) therapy using the OPTIMIZER™ Smart Mini System for people with heart failure. Specifically, it's for those whose heart pumps blood with a higher-than-normal force (ejection fraction between 40% and 70%). The study aims to see if CCM therapy can improve how far you can walk in 6 minutes and your overall health as measured by a heart failure questionnaire. You could join if you are 18 or older, have symptomatic heart failure, and have been hospitalized for heart failure or had an urgent heart failure visit recently. The study plans to enroll 1500 participants, but its current status is unclear.

Study design
This is an interventional study where participants will be randomly assigned to receive CCM therapy turned ON or OFF for the first 18 months. The study is blinded, meaning neither you nor your doctors will know which group you are in during this time.
What's involved
All eligible participants will have the OPTIMIZER™ Smart Mini System implanted. Your health will be assessed at 6 months and device-related complications will be monitored for 12 months.
Compensation
Not stated in the trial record.
Follow-up
Participants in Part I of the trial will continue to be followed through the end of Part II, which could be for an additional 1050 participants beyond the initial 450.

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NCT05064709

Assessment of CCM in HF With Higher Ejection Fraction

Recruiting
NAAges 18+InterventionalTreatment
Impulse Dynamics
~1,500 participants
Updated 2026-08-06 on ClinicalTrials.gov
What's tested:Cardiac Contractility Modulation Therapy via OPTIMIZER™ Smart Mini SystemOPTIMIZER™ Smart Mini System

At a glance

Recruiting sites
76 of 105 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Part 1 Efficacy Endpoint - Change in 6-minute walk distance (6MWD) from baseline to 6 months.
Measured over 6 months
+3 more outcomes measured
Heart Failure
Heart Failure With Preserved Ejection Fraction
Heart Failure With Mid Range Ejection Fraction
Heart Failure With Moderately Reduced Ejection Fraction
Diastolic Heart Failure

NCT05064709

Where you'd take part

This study runs at 105 sites. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • AdventHealth Orlando

    Orlando, Floridastudy coordinator listed

    Recruiting

  • Allegheny General Hospital

    Pittsburgh, Pennsylvaniastudy coordinator listed

    Recruiting

  • Arizona Heart Rhythm

    Phoenix, Arizonastudy coordinator listed

    Recruiting

  • Ascension Medical Group St. Vincent

    Indianapolis, Indianastudy coordinator listed

    Recruiting

  • Ascension Providence Hospital

    Southfield, Michiganstudy coordinator listed

    Recruiting

  • Ascension Seton

    Austin, Texasstudy coordinator listed

    Recruiting

  • Atlantic Health System- Morristown Medical Center

    Morristown, New Jerseystudy coordinator listed

    Recruiting

  • AtlantiCare Regional Medical Center

    Pomona, New Jerseystudy coordinator listed

    Recruiting

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

  • Javed Butler, MD, MPH, MBA · PRINCIPAL_INVESTIGATOR · Baylor Scott and White Research Institute, Dallas, Texas
  • Oussama Wazni, MD, MBA · PRINCIPAL_INVESTIGATOR · Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio, USA

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Eligibility criteria

Inclusion

Have stable, scheduled oral loop diuretic treatment (not just PRN) for a minimum of 30 days before providing study consent unless there is a documented allergy or intolerance.
Eligibility for enrollment is maintained for patients on an SGLT2 inhibitor without prescribed concurrent standing loop diuretic therapy if investigators provide instructions for a flexible PRN diuretic regimen (deemed appropriate by the clinician in response to symptoms or weight gain) Note: Stable is defined as no more than a 100% increase or 50% decrease in dose within the last 30 days. A one-time hold of diuretic dosing for 24 hours during the 30-day period is allowed and not an exclusionary event.
  • Part 1 Efficacy Endpoint - Change in 6-minute walk distance (6MWD) from baseline to 6 months.6 months

    Demonstrate that CCM therapy improves functional capacity in subjects with symptomatic heart failure with LVEF ≥40% and ≤70%. Compare the changes in functional capacity, as measured by the 6-minute walk distance (6MWD), from baseline to 6-months following the randomization date between the two study groups.

  • Part 1 Efficacy Endpoint - Change in the health status from baseline to 6 months as assessed by the Kansas City Cardiomyopathy Questionnaire Clinical Summary Score (KCCQ CSS).6 months

    Demonstrate that CCM therapy improves health status in subjects with symptomatic heart failure with LVEF ≥40% and ≤60%. Compare the changes in health status, as measured by the KCCQ CSS, from baseline to 6-months following the randomization date between the two study groups.

  • Part 1 Safety Endpoint - The incidence of Optimizer device- or procedure-related complications within the first 12 months after implant12 months

    Compare the composite incidence of Optimizer device-related and procedure-related SAEs (complications) for available data collected from implant to 12 months after the Optimizer implantation procedure to a performance goal of 75% free of complications.

  • Part 2 Endpoint - The hierarchical composite of mortality, morbidity, and health status outcomes (KCCQ CSS).18 months

    Demonstrate that CCM therapy improves a composite endpoint of cardiovascular mortality at 18-months, heart failure hospitalizations at 18-months, urgent heart failure visits requiring IV diuretics at 18-months and the Kansas City Cardiomyopathy Questionnaire Clinical Summary Score (KCCQ CSS) at 12-months. Comparison of a hierarchical composite endpoint between the two study groups will be based on the Finkelstein-Schoenfeld global rank method.