ScienceDaily (Oct. 27, 2009) — A new Mayo Clinic study suggests that video capsule endoscopy (CE), a procedure that uses wireless technology in diagnosing intestinal disease, is safe for patients with heart devices. Wireless electrical gadgets, such as cell phones, have been shown to interfere with implanted heart devices, including pacemakers and defibrillators. This risk has led medical experts to speculate that capsule endoscopy could similarly cause heart devices to fail.