- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00542854
iPod and Other MP3 Players on ICDs and Pacemakers in Children
A Pilot Study on the Effects of Digital Music Players on Implantable Cardioverter Defibrillators and Pacemakers in Pediatrics and Congenital Heart Disease
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Since pacemakers and implantable cardioverter defibrillators (ICDs) have been used, there have been questions about what external sources interference could alter their functioning or event recording properties. Because these devices are often intended to be life-saving, their proper functioning is of critical importance.
The literature documents a number of common sources of possible interference. Interference with MRI and electrocautery have been observed (1, 2). Outside the hospital, store security devices and personal digital assistants (PDAs) have been evaluated (3, 4). In 1997, Hayes et al published a randomized, prospective trial concluding that cellular telephones impacted the functioning of pacemakers, but that they did not seem to have any effect at any significant distance (5). They showed that a phone being used at the ear was sufficiently far away to prevent a health risk and recommended that phones not be put in shirt pockets or used near the device.
Unlike phones, which are commonly held to the ear, music is now available via portable MP3 players and they can be held almost anywhere. Thaker et al state that Apple iPods cause pacemaker interference in 50% of their patients, with over-sensing in 20% of patients, telemetry interference in 29% of patients and pacemaker inhibition in 1.2% of patients (6). The mean age for their sample was 76.1 years +/- 8.6 years. We anticipate that a higher proportion of teenagers and kids who have pacemakers use portable MP3 players than in the elderly adult population.
Design Prospective observational study a single tertiary care center.
Subjects
The electrophysiology department at Children's Hospital, Boston follows a large number of patients with pacemakers and ICDs. Approximately 15 patients are seen each week in clinic for routine pacemaker evaluation.
Entry Criteria We will include the first 100 patients with pacemakers and ICDs who consent for the prospective trial.
- Consent for participation
- Active pacemaker/ICD, which is functioning appropriately at the time of interrogation based on internal diagnostics and the judgment of an appropriate clinician (electrophysiology nurse, fellow and/or attending.
- Normally functioning leads and thresholds at the time of interrogation based on internal diagnostics and the judgment of an appropriate clinician (electrophysiology nurse, fellow and/or attending.
Variables
Primary Outcome Change in pacemaker sensing thresholds, pacing thresholds, telemetry interference or pacemaker inhibition.
Methods
Study investigators will first obtain informed consent from each patient or family and, where appropriate, assent from the child.
At the conclusion of their routine clinic visit, each patient will have his or her pacemaker attached to the appropriate proprietary interrogation system for their pacemaker device. We will then monitor the pacemaker/ICD system while placing a series of portable music devices at various distances from the pacemaker/ICD system: (1) 2cm, (2) 30cm, (3) 100cm. At each distance the pacemaker will be re-interrogated for changes in pacemaker sensing thresholds, pacing thresholds, telemetry interference or pacemaker inhibition. At the end of the testing process, the devices will be removed from near the patient and the device will be interrogated again to assure that the device is at the appropriate clinical settings.
Risks
We believe that there are no more than minimal risks associated with this study. The principle intervention is the placement of a music device near the pacemaker/ICD during the time of pacemaker monitoring. We consider this risk to be similar to the risks encountered by many patients who are currently using portable music devices outside the hospital. In addition, we do not expect any permanent change in the pacemaker or ICD settings, thresholds or functioning.
Statistical Issues
Hypothesis Our hypothesis is that the close approximation of portable MP3 players interfere with the appropriate sensing and recording of pacemakers and ICDs.
Sample Size and Power Calculations We intend to conduct a descriptive study, tabulating the number of times that a pacemaker or ICD has changes in the sensing thresholds, pacing thresholds, telemetry interference or pacemaker inhibition when exposed to a series of portable MP3 players at various distances. In addition, we will describe the nature and quantitative differences of those changes.
Because we do not intend to do comparisons for significance against a control group, we have chosen 100 patients as a reasonable sample size for evaluating possible changes in pacemaker/ICD function.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Locations
-
-
Massachusetts
-
Boston, Massachusetts, United States, 02115
- Children's Hospital Boston
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Children and adults with congenital heart disease who have an implanted pacemaker or defibrillator
Exclusion Criteria:
- Age less than 4 or inability to communicate adequately with study team
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
MP3
4 different brands of MP3 players will be tested at 3 distances from pacemakers and ICDs.
|
4 different brands of MP3 players will be tested at 3 distances from ICD/pacemaker site in children and adults with congenital heart disease.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in pacemaker sensing thresholds, pacing thresholds, telemetry interference or pacemaker inhibition.
Time Frame: 10 minutes
|
10 minutes
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Charles Berul, MD, Boston Children's Hospital
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CHB-07-08-0308
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Heart Block
-
Medtronic Cardiac Rhythm and Heart FailureCompletedComplete Heart Block | AV Block | AV Block Complete | 3rd Degree Heart BlockUnited States, Hong Kong
-
University Hospital of FerraraRecruitingAtrial Fibrillation | Arrhythmias, Cardiac | Left Bundle-Branch Block | Bundle-Branch Block | Ventricular Fibrillation | Ventricular Tachycardia | Ventricular Dysfunction | Atrioventricular Block | Heart Failure, Systolic | Ventricular Arrythmia | Heart Failure,Congestive | Bradyarrhythmia | Heart Arrhythmia | Reduced... and other conditionsItaly
-
University of Sao PauloUnknownCongenital Complete Atrioventricular Heart Block | High Grade Atrioventricular Block | Postoperative Complete Heart BlockBrazil
-
University of MagdeburgCompletedLeft Bundle Branch Block | High Degree AV-blockGermany
-
Centre de Recherche de l'Institut Universitaire...Recruiting
-
Biotronik, Inc.Active, not recruitingLeft Bundle-Branch Block | Bradycardia | Cardiomyopathies | Atrioventricular BlockUnited States
-
Boston Scientific CorporationTerminatedFirst Degree AV Block
-
Schuechtermann-KlinikMedtronicUnknownHeart Failure | Left Bundle-Branch BlockGermany
-
Duke UniversityMedtronicCompleted
-
Imperial College Healthcare NHS TrustRigshospitalet, DenmarkRecruiting
Clinical Trials on MP3
-
Matteo VisintinUnknown
-
University of RochesterNational Center for Complementary and Integrative Health (NCCIH)Completed
-
The Reading Hospital and Medical CenterCompletedHeart MurmurUnited States
-
Mayo ClinicRecruitingDepression | PTSD | Anxiety | Psychological Trauma | Post Intensive Care Unit SyndromeUnited States
-
University of PennsylvaniaCompletedAnalgesia | Arthroscopy | Shoulder Joint
-
Dr. Horst Schmidt Klinik GmbHDeutsche Gesellschaft für hypnose und hypnotherapie E.V.TerminatedBreast Neoplasm | Ovary CancerGermany
-
Centre hospitalier de l'Université de Montréal...CompletedGlaucoma | Glaucoma, Open-Angle | Glaucoma, Neovascular | Glaucoma Eye | Glaucoma and Ocular Hypertension | Glaucoma, Uncompensated | Glaucoma SecondaryCanada
-
St Vincent's University Hospital, IrelandUnknown
-
Université de SherbrookeCentre de Recherche Clinique CHUSUnknownMechanically Ventilated ICU Patients | Sedative Drug ConsumptionCanada