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BOOST - Benefit of Frequent Optimization After Cardiac Resynchronization Therapy Device Replacement

This study has been terminated.
Information provided by (Responsible Party):
St. Jude Medical Identifier:
First received: June 25, 2009
Last updated: June 12, 2013
Last verified: June 2013
Cardiac resynchronization therapy (CRT) has shown improvement in mortality and morbidity in patients with left ventricular systolic dysfunction and congestive heart failure. Additionally in CRT patients it has been demonstrated that optimizing paced/sensed atrioventricular (AV) and interventricular (V-V) timings leads to immediate hemodynamic benefits and further improves cardiac function. Recent studies have shown that optimal paced/sensed AV and V-V delays change over time, which raises the question of how often optimization should be repeated. Thus, frequent re-optimization of these delays might be beneficial for maintaining significant improvement of cardiac function. However, it remains to be evaluated whether timing optimization may be beneficial on patients who have received CRT for a number of years and are now having the CRT device replaced.

Condition Intervention Phase
Heart Failure Device: QuickOpt - SJM CRT (Group 1) Device: Control - SJM CRT (Group 2) Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Participant)
Primary Purpose: Treatment
Official Title: BOOST: Benefit of Frequent Optimization After Cardiac Resynchronization Therapy Device Replacement

Resource links provided by NLM:

Further study details as provided by St. Jude Medical:

Primary Outcome Measures:
  • Stroke Volume (SV) Measured by Aortic Velocity Time Integral (AoVTI) [ Time Frame: Not assessed ]
    The BOOST study is prematurely terminated so there were no enough numbers of patients to have a meaningful measurement.

Secondary Outcome Measures:
  • Modified Specific Activity Scale (SAS); Quality-of-life (QOL) Score as Measured by Minnesota Living With Heart Failure (MLHF) Questionnaire [ Time Frame: Not assessed ]
  • 6-minute Hall Walk; Intrinsic QRS Width; Echo Measurements (End Diastolic Volume, End Systolic Volume, Ejection Fraction, Left Ventricular Mass, Mitral Regurgitation, Tricuspid Regurgitation, and Interventricular and Intraventricular Mechanical Delays) [ Time Frame: Not assessed ]
  • All-cause Cardiovascular and Heart Failure Hospitalizations; All-cause Cardiovascular and Heart Failure Mortality; Changes in Paced/Sensed AV and V-V Delays; Percent Atrial and Ventricular Pacing [ Time Frame: Not assessed ]

Enrollment: 17
Study Start Date: June 2009
Study Completion Date: September 2010
Primary Completion Date: September 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: QuickOpt Device: QuickOpt - SJM CRT (Group 1)
The patient's device is programmed to sequential Bi-V pacing mode with paced/sensed AV and V-V delays optimized using QuickOpt. For Group 1 patients, optimization using QuickOpt is performed at enrollment, 3, 6, 9 and 12 month visits.
Active Comparator: Control Device: Control - SJM CRT (Group 2)
The patient's device is programmed to either simultaneous or sequential Bi-V pacing mode as per physician's discretion. The paced/sensed AV and V-V delays could be programmed empirically or optimized using any non-intracardiac electrogram (IEGM) based method as per sites standard of care. However, the Group 2 patients can be optimized only once within the first 4 weeks post CRT replacement. Any paced/sensed AV and V-V delay optimizations performed after 4 weeks post CRT replacement in Group 2 patients will be considered a protocol deviation.

Detailed Description:
  • This is a prospective, randomized, and multicenter study
  • Patients who have received a replacement St. Jude Medical(SJM) CRT device, either CRT-P or CRT-D, within the last two weeks post CRT replacement will be considered for enrollment in the study.
  • Baseline measurements will be performed at the time of enrollment.
  • Patients are followed up to 12 months post CRT replacement with data collected at 3, 6, 9 and 12 months post CRT replacement.
  • Patients will be randomized at enrollment to either Group 1 (use of SJM algorithm to optimize programming) or Group 2 ("Control").

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patient underwent a CRT replacement within the last two weeks, triggered by either the elective replacement indicator (ERI)/end of life (EOL), or by receiving a CRT-D device as an upgrade from a CRT-P device.
  • Patient has received an FDA approved SJM CRT device as a replacement to the old CRT device within the last two weeks.
  • Patient has the ability to complete a 6-minute hall walk without any assistance.
  • Patient is willing to provide written informed consent.
  • Patient has the ability to independently comprehend and complete a QOL questionnaire.
  • Patient is geographically stable and is willing to comply with the required follow-up schedule.

Exclusion Criteria:

  • Patient had paced/sensed AV and/or V-V delay optimization using QuickOpt before CRT replacement.
  • Patient had any paced/sensed AV and/or V-V delay optimization within 3 months before CRT replacement.
  • Patient has an ability to walk ≥ 450 meters (≥ 1476 feet) in 6 minutes.
  • Adequate patient's echocardiography/Doppler images will not be available.
  • Patient is expected to receive a heart transplant during the duration of the study.
  • Patient has an epicardial ventricular lead system (Active or Inactive).
  • Patient has limited intrinsic atrial activity (≤ 40 bpm).
  • Patient has persistent or permanent atrial fibrillation (AF).
  • Patient has 2° or 3° heart block.
  • Patient's life expectancy is less than 1 year.
  • Patient is less than 18 years old.
  • Patient is pregnant.
  • Patient is on IV inotropic agents 1 month prior to CRT replacement.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00929474

United States, Colorado
University of Colorado Hospital
Aurora, Colorado, United States, 80045
United States, Mississippi
Hattiesburg Clinic, P.A./Southern Heart Center
Hattiesburg, Mississippi, United States, 39401
Sponsors and Collaborators
St. Jude Medical
  More Information

Responsible Party: St. Jude Medical Identifier: NCT00929474     History of Changes
Other Study ID Numbers: CRD466
Study First Received: June 25, 2009
Results First Received: June 12, 2013
Last Updated: June 12, 2013

Additional relevant MeSH terms:
Heart Failure
Heart Diseases
Cardiovascular Diseases processed this record on August 22, 2017