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Evaluating Myocardial Injury for Defibrillation Threshold Testing Methods for ICD Implantation

NCT02111993 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2019-05-22

Study results available
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Summary

The objective of this study is to evaluate myocardial injury, if any, as quantified by cardiac markers (Troponin-T) in defibrillation threshold (DFT) testing during implantation of implantable cardioverter defibrillators (ICDs) using the upper limit of vulnerability (ULV) method vs. standard defibrillation threshold method.

Conditions

Interventions

DEVICE

Standard Defibrillation Testing

Once the ICD is implanted, Standard Defibrillation Threshold (DFT) testing will begin. A low energy shock will be delivered to the heart at the peak of the T wave to induce ventricular fibrillation (VF). Once VF is induced, a rescue shock of 25J will be delivered to restore sinus rhythm. This process will be repeated once more after 5 minutes.

DEVICE

Upper Limit of Vulnerability Testing

Once the ICD is implanted, Upper Limit of Vulnerability (ULV) testing will commence. An 18 J shock will be delivered will at different points from the t-wave. If VF is not induced with any of these shocks, then the ULV will be considered to be 18J. If VF is induced, then a 25 J rescue shock will be delivered.

Sponsors & Collaborators

Principal Investigators

  • Ulrika Birgersdotter-Green, MD · University of California, San Diego

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-08-31
Primary Completion
2015-04-30
Completion
2015-06-30

Countries

  • United States

Study Locations

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Entities

Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02111993 on ClinicalTrials.gov