Music headphones can interfere with heart devices
Have a pacemaker or an implanted defibrillator? Don't keep your iPod earbuds in your shirt pocket or draped around your neck - even when they're disconnected. A study finds that some headphones can interfere with heart devices if held very close to them.
They might even prevent a defibrillator from delivering a lifesaving shock, say doctors who tested them.
"Headphones contain magnets, and some of these magnets are powerful," said the study's leader, William Maisel, a cardiologist at Beth Israel Deaconess Medical Centre in Boston and a heart device consultant to the federal Food and Drug Administration.
