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The Potential Interference of Magnets From a Surgical Magnetic Drape With Cardiac Pacemakers

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ClinicalTrials.gov Identifier: NCT01009320
Recruitment Status : Completed
First Posted : November 6, 2009
Last Update Posted : March 6, 2013
Information provided by (Responsible Party):

Study Description
Brief Summary:
Magnetic fields may interfere with the function of cardiac pacemakers. A magnetic drape to hold surgical instruments is widely used in surgery. The use of this drape on pacemaker patients has not yet been tested. Our objective is to conduct a clinical study to evaluate the potential interference of the surgical magnetic drape on patients with cardiac pacemakers. We are testing the magnetic drape on forty patients in the pacemaker clinic. The totality of the drape is applied over the pacemaker and depending on the result, the drape is either folded in two over the pacemaker or the magnets are applied individually up to the totality of the drape, 70 magnets. Thereafter, the drape is pulled in increments of 3 cm caudally until the interference is ceased. Results are in process as we are presently actively recruiting.

Condition or disease
Cardiac Pacemaker, Artificial

Study Design

Study Type : Observational
Actual Enrollment : 50 participants
Observational Model: Cohort
Time Perspective: Cross-Sectional
Official Title: The Potential Interference of Magnets From a Surgical Magnetic Drape With Cardiac Pacemakers
Study Start Date : September 2009
Primary Completion Date : November 2009
Study Completion Date : November 2009
Groups and Cohorts

Pacemaker with magnets
Patients with pacemakers who will be tested for magnetic interference with a magnetic drape.

Outcome Measures

Primary Outcome Measures :
  1. Asynchronous pacing [ Time Frame: Minutes ]

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population
Out-patient clinic

Inclusion Criteria:

  • Cardiac pacemaker

Exclusion Criteria:

  • Unstable angina
  • Hemodynamic instability
  • Subjects whom the cardiologist believes are unsuitable for asynchronous pacing
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01009320

Canada, Quebec
Maisonneuve-Rosemont hospital
Montreal, Quebec, Canada, H1T 2M4
Sponsors and Collaborators
Maisonneuve-Rosemont Hospital
Study Director: Louis-Philippe Fortier, MD, FRCPC Maisonneuve-Rosemont hospital, University of Montreal
Principal Investigator: Valerie Zaphiratos, MD Maisonneuve-Rosemont hospital, University of Montreal
More Information

Responsible Party: Valerie Zaphiratos, Principal investigator, Maisonneuve-Rosemont Hospital
ClinicalTrials.gov Identifier: NCT01009320     History of Changes
Other Study ID Numbers: HMRvzaphi
First Posted: November 6, 2009    Key Record Dates
Last Update Posted: March 6, 2013
Last Verified: March 2013

Keywords provided by Valerie Zaphiratos, Maisonneuve-Rosemont Hospital:
Magnetic field
Pacemaker interference