Navigation Links
iPods and similar devices found not to affect pacemaker function

Last May, a widely reported study concluded that errant electronic noise from iPods can cause implantable cardiac pacemakers to malfunction. This just didnt sound right to the cardiac electrophysiologists at Childrens Hospital Boston, whove seen hundreds of children, teens and young adults with heart conditions requiring pacemakers. Many of our pacemaker patients have iPods and other digital music players, and weve never seen any problem, says Charles Berul, MD, director of the Pacemaker Service at Childrens. But kids and parents bring up this concern all the time, prompting us to do our own study.

Between September and December, 2007, Gregory Webster, MD, a cardiac fellow in training at Childrens, along with the electrophysiology nurses and physicians, ran tests on 51 patients coming in for appointments. Whereas last years study was done in patients averaging 77 years of age, the average age in the Childrens study was 22 (ranging from 6 to 60). All patients had active pacemakers or implantable cardioverter-defibrillators (ICDs), which were tested against four digital music players two kinds of iPods (Apple Nano and Apple Video), SanDisk Sansa and Microsoft Zune. All patients were lying down during the tests (in case an arrhythmia occurred, causing them to faint), and each digital player was placed directly over the pacemaker or ICD.

As reported in the April 2008 issue of the journal Heart Rhythm, accompanied by an editorial, there was no interference with intrinsic device functioning patients EKG (electrocardiographic) recordings showed no change in any of 255 separate tests, and no patients had symptoms. This provides reassuring evidence that should allay the fears of people using iPods and other digital music players, says Berul, the studys senior investigator.

However, in 41 percent of patients, the music players interfered with telemetry, or communications between the programmer and the pacemaker or ICD itself. (The programmer is a computerized device used by physicians to check and recalibrate the pacemaker/ICD patients do not carry it.) This interference, picked up in 29 of 204 tests, went away when the digital player was moved six inches or more from the device, and did not compromise device function. The larger digital players (Zune and Apple Video) caused more interference with telemetry than the small players.

Patients should not use digital music players while the doctor is trying to reprogram their device, Webster and the electrophysiology team conclude. If the iPod is right in the field, the programmer might not be able to communicate with the pacemaker or ICD effectively, Webster says.

The findings of interference with the pacemaker itself, reported last May, are published and updated in the same issue of Heart Rhythm. The editorial discusses possible reasons for the discrepancy between the two studies, which mainly relate to the testing methods and interpretation of the pacemaker recordings. Importantly, the music players did not stop pacemakers from pacing (regulating the heartbeat) in either the Childrens study or the previously reported study, though the previous study did find interference with pacemaker sensing.

Berul and colleagues are reassured by their own findings, but acknowledge that their testing was only short-term. We cant conclude that its completely safe to have an iPod right on top of the device for hours at a time, Berul says. Thats why we suggest the precaution of keeping it at least six inches away.


Contact: Keri Stedman
Children's Hospital Boston

Related medicine news :

1. IPods Dont Interfere With Pacemakers, Study Shows
2. IPods Dont Interfere With Heart Pacemakers
3. Introspective experiences inform inferences about similar people -- but not dissimilar
4. Broad Stakeholder Coalition Concludes that the Pathway for Biosimilars Act Fails to Ensure Timely Access to Safe, Affordable Biogeneric Medicines for Patients
5. Satisfaction After Fibroid Embolization Similar to Hysterectomy
6. Cost of Massachusetts Health Insurance Mandate to Rise 85% -- $400 Mil -- in 09; CA Mandate Proposal Certain to Face Similar Increases
7. Light powered platinum more targeted and 80 times more powerful than similar cancer treatments
8. Mini transplant patients outcomes similar using related and unrelated donor cells
9. ENDEAVOR IV achieves primary endpoint, demonstrates similar safety profile compared to Taxus stent
10. Cancer patients, spouses report similar emotional distress, U-M study finds
11. Cancer patients, spouses report similar emotional distress, U-M study finds
Post Your Comments:
(Date:10/13/2017)... ... October 13, 2017 , ... Yisrayl Hawkins, Pastor and Overseer at The House ... most popular and least understood books in the Holy Scriptures, Revelation. The Book of ... baffled scholars for centuries. Many have tossed it off as mere rubbish, but Yisrayl ...
(Date:10/13/2017)... ... ... “The Journey: From the Mountains to the Mission Field”: the story of a missionary ... Journey: From the Mountains to the Mission Field” is the creation of published author, ... ages and currently teaches a class of ladies at her church, which she has ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent ... sleep apnea using cutting-edge Oventus O2Vent technology. As many as 18 million ... by frequent cessation in breathing. Oral appliances can offer significant relief to about ...
(Date:10/12/2017)... ... , ... IsoComforter, Inc. ( ), one of the Nation’s ... design of the shoulder pad. The shoulder pad provides optimal support and full ... while using cold therapy. By utilizing ice and water that is circulated from an ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... system that we intend to develop to enable prevention of a major side ... severe hearing loss, especially in pediatric patients. For cisplatin, hearing loss is FDA ...
Breaking Medicine News(10 mins):
(Date:10/11/2017)... Texas , Oct. 11, 2017  True ... services, has amplified its effort during National Breast ... about hereditary cancer risks. ... of Clinical Oncology calculated that more than 10 ... have inherited mutations in BRCA1 or BRCA2 and have ...
(Date:10/7/2017)... Oct. 6, 2017   Provista, a proven ... $100 billion in purchasing power, today announced a new ... The Newsroom is the online home for ... infographics, expert bios, news releases, slideshows and events. ... a wealth of resources at their fingertips, viewers can ...
(Date:10/4/2017)... 2017 OBP Medical , a ... devices, today announced regulatory approval from ... Agência Nacional de Vigilância Sanitária (ANVISA)) to market ... retractor with integrated LED light source and smoke ... exposure of a tissue pocket or cavity during ...
Breaking Medicine Technology: