for people ages 18 years and up (full criteria)
study started
estimated completion



The goal of the PREEMPT-HF study is to collect device and clinical event data to evaluate extended applications of the HeartLogic Heart Failure Diagnostic (HeartLogic) in a broad spectrum of heart failure patients with an implantable cardioverter defibrillator or cardiac resynchronization therapy defibrillator. There are no primary safety and/or efficacy endpoints for this study. Heart failure is a complex clinical syndrome with high morbidity, mortality, and economic burden. Chronic Heart Failure is persistent, gradually progressive, and punctuated by episodes of acute worsening leading to hospitalizations. Therefore, there remains an unmet clinical need to slow the progression of Heart Failure and prevent hospitalizations. HeartLogic, available in Boston Scientific cardiac resynchronization therapy devices and defibrillators, combines novel sensor parameters such as heart sounds and respiration with other measurements like thoracic impedance, heart rate, and activity into a HeartLogic Index for the early detection of worsening Heart Failure. However, there is limited data on the association of HeartLogic with the risk of Hear Failure readmissions and tachyarrhythmias, or for phenotyping the broad spectrum of Heart Failure patients.

Official Title

Precision Event Monitoring for Patients With Heart Failure Using HeartLogic: PREEMPT-HF


Subjects will be followed for approximately 12 months after the baseline visit to collect the required number of clinical events to support the study objectives. These events are called Reviewable Clinical Events, and include all-cause hospitalizations and Heart Failure outpatient visits. Clinical event definitions are as follows: - Hospitalization (all-cause): the subject is admitted to inpatient hospital care and discharged on a different calendar date. - Heart Failure Hospitalization: the subject is admitted with signs/symptoms of congestive heart failure and receives unscheduled augmented Heart Failure therapy with oral or intravenous medications, ultrafiltration therapy or other parenteral therapy. - Heart Failure Readmission (30-day): the subject is admitted for an unplanned hospitalization for any cause within 30 days post discharge from a Heart Failure hospitalization. - Heart Failure Outpatient Visit: the subject has signs/symptoms of Congestive Heart Failure, and receives unscheduled intravenous decongestive therapy (e.g., Intravenous diuretics, Intravenous inotropes, Intravenous vasoactive drugs, ultrafiltration) in a setting that does not involve a hospitalization (e.g., emergency room, Heart Failure clinic, primary care clinic, etc.).


Heart Failure Defibrillators, Implantable Monitoring, Physiologic Cardiac Resynchronization Therapy Cardiovascular Disease Heart Disease Implantable Cardioverter Defibrillator Cardiac Resynchronization Therapy Defibrillator Heart Failure Sensor Data 30-day Heart Failure Readmission Ventricular Tachycardia/Ventricular Fibrillation Therapy Non-Heart Failure Hospitalization HeartLogic Feature Latitude Remote Patient Monitor Data Linkage Sleep Incline Sensor Respiratory Sensor Decongestive Intravenous therapy Decompensation Cardiovascular Diseases Heart Diseases HeartLogic Sensors


You can join if…

Open to people ages 18 years and up

  • Subject is age 18 or above, or of legal age to give informed consent specific to each country and national laws.
  • Subject has a documented diagnosis of heart failure.
  • Subject has a Boston Scientific Cardiac Resynchronization Therapy Defibrillator or Implantable Cardioverter Defibrillator device implant that has HeartLogic, with Heart Failure Sensors turned ON, Respiratory Sensor turned ON, and Sleep Incline Sensor turned ON.
  • Subject has an active bipolar right ventricle lead implant.
  • Subject is enrolled in LATITUDE (NXT 5.0 or future version), and is willing to be remotely monitored from the baseline visit for approximately 12 months with HeartLogic disabled.

You CAN'T join if...

  • Subject has received or is scheduled to receive a heart transplant or ventricular assist device (VAD).
  • Subject is enrolled in any concurrent clinical study without prior Boston Scientific written approval (excluding registries).
  • Subject has a life expectancy of less than 12 months.
  • Subject has a history of non-compliance to medical care or known inability to comply with requirements of the clinical study protocol


  • Harbor UCLA Medical Center
    Torrance California 90502 United States
  • Providence St. Joseph Medical Center
    Burbank California 91505 United States
  • Mission Hospital
    Mission Viejo California 92691 United States


in progress, not accepting new patients
Start Date
Completion Date
Boston Scientific Corporation
Study Type
Last Updated