NCT05135403

Brief Summary

Active surveillance study using real-world data collected in the ASSURE Patient Registry. Outcome measures are based on analysis of ASSURE Registry data including data recorded by the WCD then annotated by clinical experts in electrophysiology.

Trial Health

57
Monitor

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
5,179

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Nov 2021

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
recruiting

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

August 30, 2021

Completed
3 months until next milestone

Study Start

First participant enrolled

November 20, 2021

Completed
6 days until next milestone

First Posted

Study publicly available on registry

November 26, 2021

Completed
3.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2025

Completed
Last Updated

September 2, 2025

Status Verified

August 1, 2025

Enrollment Period

3.9 years

First QC Date

August 30, 2021

Last Update Submit

August 25, 2025

Conditions

Outcome Measures

Primary Outcomes (2)

  • Overall shock conversion rate

    Percent of spontaneous episodes of ventricular tachycardia/ventricular fibrillation (VT/VF) successfully converted with one or more shocks ≥ 89.0%

    Up to 3 years

  • Inappropriate shocks per patient month

    Total inappropriate shocks/cumulative months of WCD use for all patients ≤ 0.0075

    Up to 3 years

Secondary Outcomes (2)

  • First shock conversion rate

    Up to 3 years

  • Inappropriate shock rate

    Up to 3 years

Other Outcomes (9)

  • Appropriate shock rate per month

    Up to 3 years

  • Appropriate shock rate

    Up to 3 years

  • Total Shocks delivered

    Up to 3 years

  • +6 more other outcomes

Study Arms (1)

ASSURE Registry Patients

Patient prescribed the ASSURE WCD who have also consented to participate in the ASSURE Patient Registry. Patients include those with reduced left ventricular ejection fraction (LVEF) and recent myocardial infarction, recent coronary revascularization, or new onset heart failure (HF) to allow for optimization of medical therapy and re-evaluation of cardiac function. Additional indications include ICD explant due to infection, postponed ICD implant, and pending heart transplant.

Device: Defibrillation

Interventions

External defibrillation from a wearable cardioverter defibrillator

ASSURE Registry Patients

Eligibility Criteria

Age18 Years+
Sexall
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

The ASSURE Wearable Cardioverter Defibrillator (WCD) system is indicated for adult patients who are at risk or at perceived risk of sudden cardiac arrest (SCA) and are not immediate candidates for, or refuse, an implantable defibrillator.

You may qualify if:

  • Adult patient prescribed the ASSURE wearable cardioverter defibrillator
  • Provided written informed consent to participate in the ASSURE Patient Registry

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Washington Medical Center

Seattle, Washington, 98033, United States

RECRUITING

MeSH Terms

Conditions

Death, Sudden, Cardiac

Interventions

Electric Countershock

Condition Hierarchy (Ancestors)

Heart ArrestHeart DiseasesCardiovascular DiseasesDeath, SuddenDeathPathologic ProcessesPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Electric Stimulation TherapyTherapeutics

Study Officials

  • Jeanne Poole, M.D.

    University of Washington

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Kristin Eis, BSChE, MBA

CONTACT

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Target Duration
3 Months
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 30, 2021

First Posted

November 26, 2021

Study Start

November 20, 2021

Primary Completion

October 1, 2025

Study Completion

October 1, 2025

Last Updated

September 2, 2025

Record last verified: 2025-08

Data Sharing

IPD Sharing
Will not share

Locations