CHELMSFORD, Mass.--(BUSINESS WIRE)--ZOLL Medical Corporation (NasdaqGS: ZOLL) announced today that the LifeVest® wearable defibrillator was discussed in three separate scientific presentations at the American Heart Association 2009 Science Session in Orlando, Florida last week. The LifeVest presentations at this premier multidisciplinary international cardiovascular meeting are an important indication of increasing acceptance as a standard of care for patients with a temporary risk of sudden cardiac arrest (SCA).