Comparison of a MAGNET Protocol Versus "off-on" Protocol for Patients With Implantable Cardioverter Defibrillators

NCT ID: NCT01599065

Last Updated: 2013-10-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

80 participants

Study Classification

OBSERVATIONAL

Study Start Date

2011-12-31

Study Completion Date

2013-10-31

Brief Summary

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The purpose of this study is to compare the two options for management of ICDs (internal cardioverter defibrillators) in patients undergoing procedures with electrocautery: (1) programming ICD therapies "off," or (2) use of a magnet to suspend ICD therapies By comparing these two techniques the investigators hope to demonstrate the efficiency of using an ICD magnet protocol during perioperative management of patients undergoing electrocautery procedures. Secondary purposes are to gain further information on health care resources, incidence of EMI, handoff communications and to document lack of adverse events in either group.

Primary objective will be: ICD therapy "off times" will be less with the use of a magnet protocol compared to an "off-on" protocol. Secondary objectives will be: (1) Healthcare resources (time and costs of skilled personnel) will be less using a magnet protocol compared to an off-on protocol, and (2) there will be no difference between adverse events in the magnet protocol compared to an off-on protocol. The incidence of EMI and number of handoff communications will be documented.

The investigators hypothesis is that the number of minutes with ICD therapies "off" will be significantly less with magnet use. The investigators also expect health care resources to be less with magnet use compared to reprogramming.

Detailed Description

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The study design will be a prospective multi-center randomized controlled trial where subjects will be randomized to either a control group (ICD "off-on" group) or to the experimental group (magnet group) within blocks of type of procedure and site.

Subjects will be enrolled at the time of their procedure and will remain in the study until their post operative device interrogation. This could take place that same day ("off on" group or registry) or at their next ICD clinic visit or remote transmission (no more than 3 months from the procedure).

The study duration from first enrollment to closure is expected to last approximately 12 months. There will be only two enrolling centers and the target sample size is 150 subjects from various manufacturers. No specific sample size was calculated as this is a pilot study.

Conditions

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Sudden Cardiac Death Arrhythmia Heart Failure

Keywords

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ICD internal cardioverter defibrillator electrocautery

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Magnet

group treated by disabling ICD during procedure

Magnet or Off-On

Intervention Type OTHER

Randomized to ICD suspension using a magnet or turning the ICD off and then back on.

Off-On

Group having ICD turned off during the procedure

Magnet or Off-On

Intervention Type OTHER

Randomized to ICD suspension using a magnet or turning the ICD off and then back on.

Interventions

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Magnet or Off-On

Randomized to ICD suspension using a magnet or turning the ICD off and then back on.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age \> 18 years
* Have a pectorally implanted ICD
* Be scheduled for surgical procedure with anticipated electrocautery, OR
* Be scheduled for endoscopic procedure with anticipated electrocautery, OR
* Be scheduled for interventional radiology procedure with anticipated electrocautery
* Have a planned procedure with anticipated EC \> 15 cm (6 in) from ICD generator\*
* Have an ICD from the following manufacturer:

* Medtronic, Inc., OR
* Boston Scientific (formerly Guidant/CPI), OR
* St. Jude Medical
* Be able to speak and understand English
* Be willing to sign consent form

* While subjects having procedures \< 15 cm (6 in) from generator will be excluded from the main study they will qualify to be placed in the registry.

Exclusion Criteria

* Be scheduled for a surgical, endoscopic or radiologic procedure where electrocautery is not anticipated
* Be scheduled for a surgical, endoscopic or radiologic procedure where only bipolar electrocautery is planned (ophthalmologic procedures)
* Have an ICD from Boston Scientific under Product Advisory related to magnet performance.
* Have an ICD from the manufacturer ELA or Biotroniks
Minimum Eligible Age

19 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Abbott Medical Devices

INDUSTRY

Sponsor Role collaborator

Boston Scientific Corporation

INDUSTRY

Sponsor Role collaborator

Medtronic

INDUSTRY

Sponsor Role collaborator

Midwest Heart Foundation

OTHER

Sponsor Role lead

Responsible Party

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Karen Larimer, PhD

Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Janet Gifford, MSN, APN

Role: PRINCIPAL_INVESTIGATOR

Edward Hospital/Midwest Heart Foundation

Karen Larimer, PhD, ACNP

Role: PRINCIPAL_INVESTIGATOR

Midwest Heart Specialists-Advocate Medical Group

Locations

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Advocate Good Samaritan Hospital

Downers Grove, Illinois, United States

Site Status

Elmhurst Memorial Hospital

Elmhurst, Illinois, United States

Site Status

Edward Hospital

Naperville, Illinois, United States

Site Status

Countries

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United States

Other Identifiers

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01-2011

Identifier Type: -

Identifier Source: org_study_id