Evaluating heart rate optimization in heart failure patients with CRT-D devices

Dynamic EchoCardiographic Optimisation REsponse Study (Studio Sulla Risposta All'Ottimizzazione Dinamica Ecocardiografica)

Observational Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico · NCT05473481

This study is testing if adjusting heart rates and delays in heart devices can help people with heart failure feel better when their current treatment isn't working well.

Quick facts

Study typeObservational
Enrollment73 (estimated)
Ages18 Years to 80 Years
SexAll
SponsorFondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico Academic / other
Locations1 site (Milano, MI)
Trial IDNCT05473481 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess the effects of heart rate optimization and guided A-V and V-V delay adjustments using color Doppler echocardiography in patients with heart failure and reduced ejection fraction. It specifically targets individuals who have CRT-D devices but have not responded adequately to the treatment. The study will evaluate clinical and electrophysiological outcomes to determine the effectiveness of these optimizations in improving patient health.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 to 85 with heart failure, a left ventricular ejection fraction of less than 45%, and CRT-D devices who are non-responders.

Not a fit: Patients under 18 or over 85 years old, those with insufficient functional capacity, or those with permanent atrial fibrillation may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved management strategies for heart failure patients, enhancing their quality of life and clinical outcomes.

How similar studies have performed: While this approach is innovative, similar studies have shown promise in optimizing heart failure management, suggesting potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Patient must be 18 to 85 years of age inclusive, at the time of signing the informed consent form;
2. Heart failure with ventricular ejection fraction left \<45%;
3. Presence of CRT-D devices in a non-responder patient for cardiac resynchronization
4. NYHA \>II;
5. Resting heart rate \<65 beats per minute;
6. Biventricular pacing \>97%.

Exclusion Criteria:

1. Age \<18 and \>85 years;
2. Insufficient functional capacity to complete the tests required by the research protocol;
3. Permanent Atrial Fibrillation

Where this trial is running

Milano, MI

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Heart Failure
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.