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Optimizing Pacing Therapy by Using Multi-Programmable Pulse Generators for Cardiac Resynchronization Pacing (CRT-P)

Optimizing Pacing Therapy by Using Multi-Programmable Pulse Generators for Cardiac Resynchronization Pacing (CRT-P)

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT02488239
Acronym
Rally CRT-P
Enrollment
64
Registered
2015-07-02
Start date
2015-05-31
Completion date
2017-03-31
Last updated
2019-09-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Post Market Surveillance Study Following Clinical Routine

Brief summary

The objective of this Post Market Clinical Follow-up (PMCF) is to collect data on the performance of the Ingenio 2 CRT-P devices and to document that device-related events, device malfunctions or device deficiencies (DDs) do not increase safety risks in Ingenio 2 CRT-P devices (CRT-Ps), both in general and specific to the new features and hardware of the devices.

Detailed description

Prospective, non-randomized, multi-center, single group, post market clinical study The devices are fully commercially available and all subjects are planned to receive a CRT-P implant as part of their standard of care (SOC). The assignment of the specific Ingenio 2 device is physician's choice and will consider leads currently in place from previous devices and planned new leads (e.g., Acuity X4 and/or other LV leads). Enrollment and Consenting Clinic Visit (≤ 30 days prior to implant procedure) (required) * Implant Procedure (Day 0; all future follow ups based on this date) (required) * Pre-Discharge Clinic Visit (after pocket closure and wound coverage 0-5 days post-implant procedure) (required) * 1 month post-implant Clinic Visit (30 ± 15 days) (required) * 3 month post-implant Clinic Visit (91 ± 21 days) (required) * Latitude-based Close-out (91 - 120 days months post last enrollment) (reporting only required) * Unscheduled clinic follow-up (any clinic visit between pre-discharge and 3 month follow up which is in addition to the 1 month follow up; per center SOC or subject needs; event reporting only) * Re-implant/Revision (as needed) * During the trial unanticipated serious adverse device effects (USADEs), serious adverse device effects (SADEs), adverse device effects (ADEs), DDs, all serious adverse events (SAEs), deaths, and changes in the device system must be reported (enrollment to Closeout). Study Duration Enrollment is expected to take 12 months. The study will be considered complete (primary endpoint completion) after all subjects have completed the Latitude based close-out 3-4 months after the last study enrollment. All study required visits will be completed as part of regularly scheduled clinic visits.

Interventions

DEVICECRT-P indicated patients

Patients who are indicated for a CRT-P device are planned to be implanted with a CRT-P device

Sponsors

ICON plc
CollaboratorINDUSTRY
Boston Scientific Corporation
Lead SponsorINDUSTRY

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. 18 years or above, or above legal age to give informed consent specific to state and national law 2. Willing and capable of providing informed consent 3. Planned to be implanted or replaced with a VISIONIST Ingenio 2 CRT-P device 4. Planned to be implanted with a 3-lead CRT-P system 5. Planned to be connected to the remote data collection through the Latitude® system 6. Able to do a 6 minute walk test 7. Maximum sensor rate of age predicted maximal heart rate (APMHR) 80% should be clinically acceptable 8. Willing and capable of participating in all visits associated with this study at an approved clinical study center and at the intervals defined-

Exclusion criteria

1. Documented life expectancy of less than 12 months 2. Currently on the active heart transplant list 3. Enrolled in any other concurrent study without prior written approval from Boston Scientific, with the exception of local mandatory governmental registries and observational studies/registries that are not in conflict and do not affect the following: * Schedule of procedures for the Rally CRT-P Study (i.e., should not cause additional or missed visits) * Rally CRT-P Study outcomes (i.e., involve medications that could affect the heart rate of the subject) * Conduct of the Rally CRT-P Study per Good Clinical Practice (GCP)/ International Standard Organization (ISO) 14155:2011/ local regulations as applicable 4. In chronic atrial fibrillation 5. APMHR needs to be programmed \< 80%. 6. Not planned to receive a functional atrial lead 7. Per the implanting physician's discretion, subject is not a suitable candidate to receive the study device as determined during the implant procedure 8. Women of childbearing potential who are or might be pregnant at the time of study enrollment 9. Unwilling or unable to participate in all scheduled study follow up visits at an approved study center 10. Does not anticipate being a resident of the area for the scheduled duration of the trial. -

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Without CRT-P Device Related Complications3 months post-implantEvaluate the Device-Related Complication Free Rate (DRCFR) at 3 months post-implant, which was based on complications that were related to the CRT-P device. A device-related complication was an adverse event that resulted in death, serious injury, a correction using invasive intervention or permanent loss of device functions, and that was assessed as related to the device.
LV Pacing Threshold3 months post-implantPrimary Effectiveness endpoint: evaluation of the left ventricular pacing threshold measurements performed at 0.5 ms pulse width at 3 months post-implant.

Countries

Finland, Germany

Participant flow

Recruitment details

The first subject was enrolled on 11 May 2015 and the study was completed on 22 March 2017, which corresponds to the last visit of the last subject. A total of 64 subjects across 8 centers were enrolled in Finland and Germany.

Participants by arm

ArmCount
Actively Enrolled Patients
Patients actively enrolled and implanted with a 3-lead CRT-P system.
61
Total61

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyConsent ineligible1
Overall StudyDeath3
Overall StudyDid not undergo implant procedure1
Overall StudyPhysician Decision2
Overall StudyWithdrawal by Subject3

Baseline characteristics

CharacteristicActively Enrolled Patients
Age, Continuous73.3 years
STANDARD_DEVIATION 10.06
Race and Ethnicity Not Collected— Participants
Region of Enrollment
Finland
15 participants
Region of Enrollment
Germany
46 participants
Sex: Female, Male
Female
24 Participants
Sex: Female, Male
Male
37 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
3 / 61
other
Total, other adverse events
40 / 61
serious
Total, serious adverse events
20 / 61

Outcome results

Primary

LV Pacing Threshold

Primary Effectiveness endpoint: evaluation of the left ventricular pacing threshold measurements performed at 0.5 ms pulse width at 3 months post-implant.

Time frame: 3 months post-implant

Population: 61 actively enrolled subjects were included in the analysis. 3 subjects did not receive the study device.

ArmMeasureValue (MEAN)
Actively Enrolled PatientsLV Pacing Threshold1.65 Volt
p-value: <0.001t-test, 1 sided
Primary

Percentage of Participants Without CRT-P Device Related Complications

Evaluate the Device-Related Complication Free Rate (DRCFR) at 3 months post-implant, which was based on complications that were related to the CRT-P device. A device-related complication was an adverse event that resulted in death, serious injury, a correction using invasive intervention or permanent loss of device functions, and that was assessed as related to the device.

Time frame: 3 months post-implant

Population: Out of 61 actively enrolled subjects (3 subjects were not implanted with the study device), 55 patients continued the study for at least 3 months: 6 subjects were excluded from analysis because either they died or withdrew before 3 months analysis, or because no 3 months data was available.

ArmMeasureValue (NUMBER)
Actively Enrolled PatientsPercentage of Participants Without CRT-P Device Related Complications100 % of participants
p-value: <0.001exact binomial rate

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026