NCT04629066

Brief Summary

This single center randomized controlled trial will involve 50 medically stable outpatients with HF, reduced ejection fraction, and previously implanted ICD or CRT-D devices followed longitudinally on the Abbott Medical Merlin remote patient monitoring network. Patients will be randomized in a 1:1 fashion to usual care plus a remotely administered home based weekly prescription for aerobic exercise (intervention) or usual care alone (control). Usual care will include regularly scheduled visits with the clinical heart failure care team and medical therapy as prescribed by that team. The exercise prescription will be created by an exercise physiologist after incorporating remotely collected data from a patient directed smartphone app assessing HF symptom severity, vital signs, weight, and blood sugar, implantable device measures of physical activity, heart rate, heart failure volume status and heart rhythm, and Fitbit measures of physical activity.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
13

participants targeted

Target at below P25 for not_applicable heart-failure

Timeline
Completed

Started Apr 2021

Shorter than P25 for not_applicable heart-failure

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

November 2, 2020

Completed
14 days until next milestone

First Posted

Study publicly available on registry

November 16, 2020

Completed
5 months until next milestone

Study Start

First participant enrolled

April 27, 2021

Completed
11 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 15, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 15, 2022

Completed
1.4 years until next milestone

Results Posted

Study results publicly available

August 1, 2023

Completed
Last Updated

September 28, 2023

Status Verified

September 1, 2023

Enrollment Period

11 months

First QC Date

November 2, 2020

Results QC Date

September 12, 2022

Last Update Submit

September 20, 2023

Conditions

Keywords

Remote Exercise PrescriptionCardiac Implant

Outcome Measures

Primary Outcomes (1)

  • Abbott Implantable Cardioverter-defibrillator (ICD) or Cardiac Resynchronization Therapy Defibrillator (CRT-D) Device Measured Daily Physical Activity (PA)

    Reported in minutes of PA per day.

    12 weeks after randomization

Secondary Outcomes (3)

  • Change in Kansas City Cardiomyopathy Questionnaire (KCCQ) Heart Failure (HF) Symptoms Severity Score

    Baseline to 12 weeks

  • Number of Heart Failure Hospitalization, Fracture, Myocardial Infarction, Serious Adverse Arrhythmia, and ICD Therapy Combination Events

    Cumulative during 12 weeks of intervention

  • Kansas City Cardiomyopathy Questionnaire (KCCQ) Heart Failure (HF) Symptom Severity Score

    12 weeks after randomization

Study Arms (2)

Usual care

NO INTERVENTION

Usual care will include regularly scheduled visits with the clinical heart failure care team and medical therapy as prescribed by that team.

Remote prescription for aerobic exercise

EXPERIMENTAL

The exercise prescription will be created by an exercise physiologist after incorporating remotely collected data from a patient directed smartphone app assessing HF symptom severity, vital signs, weight, and blood sugar, and cardiac implant measures of physical activity, heart rate, heart failure volume status and heart rhythm, and Fitbit measures of physical activity.

Behavioral: Remote Cardiac Rehabilitation (CR)

Interventions

Patients randomized to remote CR will be asked to use an app for cardiac rehabilitation a minimum of 3 times a week. Patients will be given an exercise prescription provided by a certified exercise physiologist. The exercise prescription will change each week based on refreshed data from the prior week. Instructional videos for each exercise are provided in the app. Patients will not be told to perform the exercise at a particular time. Instead they will be asked to complete a certain amount of exercise per week at whatever time is convenient for them. Patients randomized to remote CR will also receive App based reminders to take their medications, resources to guide healthy eating habits, and other behavioral health advice as is done as standard of care in both remote based and clinic based CR.

Remote prescription for aerobic exercise

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients have a MERLIN patient registry record for an ICD or CRT-D implantation between 01/01/2010-12/31/2020
  • Age \> 18 years
  • Left ventricular ejection fraction \< 50% by echocardiogram, nuclear cardiology scan, cardiac magnetic resonance imaging, or invasive left ventriculography within the past 12 months.
  • Ongoing NYHA class II, III, or IV HF symptoms by questionnaire
  • Ongoing use of beta-blocker and ACE-inhibitor or angiotensin receptor blocker or willingness to start them- assessed by Duke Epic EMR screening.
  • Life expectancy \> 12 months
  • To allow for a post-surgical adjustment period, patients must be \>30 days out from device implantation

You may not qualify if:

  • Prior participation in CR- by patient questionnaire
  • Unwillingness to sign informed consent form
  • Currently performing \> 240 minutes of device detected daily PA- by ICD/CRTD remotely collected data.
  • Lack of a smartphone or unwillingness to use an App or Fitbit device
  • Prior left ventricular assist device (LVAD) implantation or heart transplantation
  • ICD tachyarrhythmia therapies programmed off
  • Inherited arrhythmia condition with contraindication to exercise (eg Lamin A mutation or ARVC)
  • No transmissions through Merlin.net in past 12 months

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Duke University Medical Center

Durham, North Carolina, 27710, United States

Location

MeSH Terms

Conditions

Heart Failure

Condition Hierarchy (Ancestors)

Heart DiseasesCardiovascular Diseases

Results Point of Contact

Title
Marjan Cobbaert
Organization
Duke Clinical Research Institute

Study Officials

  • Brett Atwater, MD

    Duke University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 2, 2020

First Posted

November 16, 2020

Study Start

April 27, 2021

Primary Completion

March 15, 2022

Study Completion

March 15, 2022

Last Updated

September 28, 2023

Results First Posted

August 1, 2023

Record last verified: 2023-09

Data Sharing

IPD Sharing
Will not share

Locations