Examination of Implant´s Safety in an Electronic and Magnetic Field Environment (FEMU)

The recruitment status of this study is unknown because the information has not been verified recently.
Verified March 2013 by RWTH Aachen University.
Recruitment status was  Recruiting
Information provided by (Responsible Party):
RWTH Aachen University
ClinicalTrials.gov Identifier:
First received: June 20, 2012
Last updated: March 21, 2013
Last verified: March 2013

The number of active electrical cardiac implants such as ICDs, pacemakers or CCM has significantly risen over the last two decades. This has been paralleled by an increase in the number of sources of electromagnetic fields in daily life and occupational circumstances.

To date it remains unclear whether patients are at risk of device failure when being subjected to these fields. There are currently no general guidelines available to help clinicians informing their patients about safety levels and behavior around these electromagnetic fields.

This study aims to identify the thresholds of safe use of these devices and potential failures under worst-case conditions in 50/60 Hz fields (i.e.

power line frequency). Device implanted patients will be exposed to electric, magnetic and combined fields of different intensity at various device programming (e.g. nominal and maximum sensitivity). The results will show whether patients are safe in public or occupational environments, which medical relevant disturbances can occur and if a correlation exists between disturbances and device type or patients physique.

Condition Intervention
Disorder of Cardiac Pacemaker System
Disorder of Implantable Defibrillator
Cardiac Arrhythmia
Device: Magnetic and electric field´s impact on the implant

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Study of Provocation Concerning Implants´Safety in Electronic and Magnetic Fields in Their Environment

Further study details as provided by RWTH Aachen University:

Biospecimen Retention:   Samples Without DNA

blood (serum and plasma) urine

Estimated Enrollment: 200
Study Start Date: September 2009
Estimated Study Completion Date: December 2014
Estimated Primary Completion Date: December 2013 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
cardiac pacemaker Device: Magnetic and electric field´s impact on the implant
Examination of magnetic and electric field's impact on the implant regarding: stability detection threshold using different strength of magnetic and electric field
Other Name: Examination


Ages Eligible for Study:   18 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population

age between 18 and 75


Inclusion Criteria:

  • men and women between 18 and 75 years
  • Implantation of a SM-/ ICD-assembly at least four weeks ago
  • signed informed consent

Exclusion Criteria:

  • enduring addiction of implant
  • thyroid disease
  • electrolyte imbalance on the trial day
  • pregnancy and breastfeeding
  • acute myocardial infarction (<30 days)
  • atrial fibrillation with not effective anticoagulation (risk of intra-cardial thombus)
  • Comorbidity, which complicates an emergency assistance, e.g. morbus bechterew, glaucoma, micturition disturbance
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT01626261

Contact: Patrick Schauerte, MD +492418089301 pschauerte@ukaachen.de

Universtiy Hospital of Aachen Recruiting
Aachen, Northrhine-Westfalia, Germany, 52074
Contact: Patrick Schauerte, MD    +492418089301    pschauerte@ukaachen.de   
Sponsors and Collaborators
RWTH Aachen University
Principal Investigator: Patrick Schauerte, MD University Hospital, Aachen
  More Information

No publications provided by RWTH Aachen University

Additional publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: RWTH Aachen University
ClinicalTrials.gov Identifier: NCT01626261     History of Changes
Other Study ID Numbers: 09-051
Study First Received: June 20, 2012
Last Updated: March 21, 2013
Health Authority: Germany: Ethics Commission

Additional relevant MeSH terms:
Arrhythmias, Cardiac
Cardiovascular Diseases
Heart Diseases
Pathologic Processes

ClinicalTrials.gov processed this record on April 19, 2015