A couple of months ago, defibrillator-maker Medtronic warned consumers and doctors that a wife connecting their defibrillator to their heart might break. Now, patients are facing the agonizing decision as to whether they should absorb the health risks--and in some cases, tens of thousands of dollars in costs--involved in removing and replacing that potentially faulty wire. Meanwhile, physicians are struggling with how to advise their patients on the issue. Article