NCT00311181

Brief Summary

The objective of this study is to compare the ULV (Upper Limit of Vulnerability)/DFT (Defibrillation Threshold) efficacy between the 2.5, 3.5 and 4.5 ms membrane time constant based biphasic defibrillation waveforms. This comparison will result in identifying the optimal membrane time constant when programming the "tuned" defibrillation waveform.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
217

participants targeted

Target at P75+ for phase_4

Timeline
Completed

Started Aug 2006

Geographic Reach
1 country

2 active sites

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

April 3, 2006

Completed
2 days until next milestone

First Posted

Study publicly available on registry

April 5, 2006

Completed
4 months until next milestone

Study Start

First participant enrolled

August 1, 2006

Completed
1.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2008

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2008

Completed
4.4 years until next milestone

Results Posted

Study results publicly available

August 30, 2012

Completed
Last Updated

February 20, 2019

Status Verified

February 1, 2019

Enrollment Period

1.7 years

First QC Date

April 3, 2006

Results QC Date

July 24, 2011

Last Update Submit

February 1, 2019

Conditions

Keywords

ICDDefibrillationULVTuned

Outcome Measures

Primary Outcomes (3)

  • Defibrillation Thresholds (DFTs) (3.5 ms Waveform)

    Implant

  • DFT (2.5 ms Waveform)

    Implant

  • DFT (4.5 ms Waveform)

    Implant

Study Arms (1)

2.5/3.5/4.5 ms defibrillation waveform

EXPERIMENTAL
Device: Implantable Cardioverter Defibrillator (ICD), Cardiac Resynchronization Therapy (CRT-D)

Interventions

Patients that are indicated for an ICD or CRT-D receive one of these devices.

2.5/3.5/4.5 ms defibrillation waveform

Eligibility Criteria

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

You may qualify if:

  • Patient is a candidate for ICD/CRT-D implantation.
  • Patient has a compatible transvenous defibrillation lead system.
  • Patient has had an echocardiogram, MUGA, or cath procedure within 6 months of ICD/CRT-D implant.
  • Patient is able to tolerate ULV guided DFT testing.

You may not qualify if:

  • Patient has a mechanical valve in the tricuspid position.
  • Patient has epicardial defibrillation electrodes.
  • Patient is pregnant.
  • Patient is less than 18 years old.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Baptist Medical Center Montclair

Birmingham, Alabama, 35212, United States

Location

Pacific Heart Institute

Santa Monica, California, 90404, United States

Location

MeSH Terms

Conditions

Death, Sudden, Cardiac

Interventions

Defibrillators, ImplantableCardiac Resynchronization Therapy

Condition Hierarchy (Ancestors)

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

Intervention Hierarchy (Ancestors)

DefibrillatorsElectrodesElectrical Equipment and SuppliesEquipment and SuppliesElectrodes, ImplantedProstheses and ImplantsCardiac Pacing, ArtificialElectric Stimulation TherapyTherapeutics

Results Point of Contact

Title
Ashish Oza
Organization
St Jude Medical

Study Officials

  • Shephal Doshi, MD

    Pacific Heart Institute

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 3, 2006

First Posted

April 5, 2006

Study Start

August 1, 2006

Primary Completion

April 1, 2008

Study Completion

April 1, 2008

Last Updated

February 20, 2019

Results First Posted

August 30, 2012

Record last verified: 2019-02

Locations