ClinicalTrials.gg
CompletedNCT02699944Updated Sep 23, 2021

Optimization of CRT Using an ECG Vest

An interventional study of ECG Vest Optimization in Heart Failure, sponsored by Alan J. Bank, MD. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-09-23.

Sponsored by Alan J. Bank, MD · Not applicable, Interventional, and Diagnostic

From the registry’s dates

  • Registered 3 months after the study started (first participant enrolled Nov 2015, registered Feb 2016).

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Phase
Not applicable
Study type
Interventional
Enrollment
56
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 2,157 studies in Heart Failure with a site in United States — 346 open to participants now, 436 under way, 27 of them phase 3. Heart Failure · United States.

Enrollment
861st of 1,601
56 · median 65
Started
2015
with 81 others
No phase
886 of 2,157
159 open now
Registered
1,000th of 2,157
by date

Among the 2,157 studies in Heart Failure with a site in United States, this one is the 861st largest by enrollment of the 1,601 interventional ones that give a count, is one of 82 that started in 2015, is one of 886 with no phase, and was the 1,000th registered.

Heart Failure

6,332 studies on the registry are indexed under Heart Failure; 1,392 are open to participants now.

Browse Heart Failure studies →

Open to participants now

346 of the 2,157 studies in Heart Failure with a site in United States are open now. Recruiting first, the newest first:

341 more — sign in →

All 346 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 966 Heart Failure studies recruiting now, 689 (71%) set no upper age limit and 89 (9%) stop at 75 or younger; 63 take children under 18; 96 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

Despite advancements in implant technology and various techniques of optimization, there is still around 30% non-responder rate to cardiac resynchronization therapy (CRT). This study will assess the potential benefit of a body surface mapping technology to optimize CRT devices in the chronic sub-optimal responder setting.

Read the detailed description

Cardiac resynchronization therapy (CRT) is one of the most important advances in the treatment of patients with heart failure (HF). This therapy, also known as biventricular pacing, utilizes pacemaker leads to synchronize the contraction of the walls within the left ventricle (LV) and the contraction of the left and right ventricles. Many randomized trials have conclusively demonstrated that CRT improves symptoms, LV structure and function, hospitalization rates, and survival in appropriately selected HF patients. Nonetheless, approximately 30% of CRT patients will be "non-responders" because they will not demonstrate the expected clinical and/or echocardiographic improvement following therapy. A critical component of assessing CRT efficacy during the optimization clinic will be the use of a novel method of body surface electrocardiographic mapping under development by Medtronic, called the ECG Vest. In this proposal, we describe a research study to assess the potential benefit of using the ECG Vest as part of a CRT optimization strategy on clinical and echocardiographic outcomes (heart size and function) of patients receiving standard clinical care in the UHVC CRT Optimization Clinic.

03

Conditions studied

  • Heart Failure

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04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients (or their legal guardian) must be willing to provide and a data privacy (HIPPA) authorization
  • Patient is or will be followed clinically in the UHVC CRT Optimization Clinic
  • Patient has been implanted with a CRT device for at least 6 months
  • Patient received an echocardiogram prior to CRT implant
  • Patients must be ≥ 18 years of age

Exclusion criteria

Exclusion Criteria:

  • Patient's EF is currently ≥ 50%
  • Patients who are pregnant
  • Patient has unhealed / open wounds on the torso and/or has a history of severe allergic reactions from gel / electrode glue
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
56 participants (actual)

Study arms

  • Experimental
    CRT sub-optimal responder

    Subjects who have had CRT for at least 6 months and who have not responded as well as they could, in their cardiologists opinion. Subjects' ejection fraction are still \<50% despite CRT. A ECG Vest Optimization protocol will be utilized as one aspect to determine the best CRT programming for each individual subject.

    Device: ECG Vest Optimization

Interventions

  • DeviceECG Vest Optimization

    As part of a standard and clinically indicated CRT optimization procedure utilize an ECG Vest as one modality for collecting information to determine best device programming.

06

What researchers measure

Primary outcomes

  1. Change in left ventricular end-systolic volume

    Time frame: 6 months after optimization

Secondary outcomes

  1. Determine the degree to which echocardiographic measures of LV function correlate with ECG Vest measures

    Time frame: 6 months after optimization

07

Study locations

1 site
  • United Heart & Vascular Clinic
    Saint Paul, Minnesota 55102, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2015 to primary completion in Aug 2021, 69 months.

Of 1,118 non-industry interventional studies with no phase under Heart Failure, half reached primary completion within 29 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 50. This study's 69 months is above that.

Counting every sponsor, half of 1,354 studies reached it within 31 months; a quarter within 16 and three quarters within 52.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 24, 2016
First posted
Mar 7, 2016
StartActual
Nov 2015
Primary completionActual
Aug 17, 2021
CompletionActual
Aug 17, 2021
Last update
Sep 23, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 23, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02699944
Lead sponsor
Alan J. Bank, MD
Collaborators
Medtronic
Responsible party
Alan J. Bank, MD (Medical Director of Research, Allina Health System) — Sponsor-investigator
First posted
Mar 7, 2016
Start date
Nov 2015
Primary completion
Aug 17, 2021
Completion
Aug 17, 2021
Last update
Sep 23, 2021

Study contacts

Alan J Bank, MD
principal investigator · Medical Director of Research

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2021. You cannot join it, but the record below documents what was studied.

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