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Zoll climbs on LifeVest prescriptions

May 14, 2011

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Zoll Medical Corp. moved higher after the Chelmsford medical device maker said that more than 40,000 patients who are at risk of sudden cardiac arrest have been prescribed the company’s LifeVest wearable defibrillator. The vest continuously monitors a patient’s heart, delivering a shock to restore normal heart rhythm if a life-threatening rhythm is detected, the company said. Sudden cardiac arrest is one of the major causes of unexpected deaths, according to the American Heart Association. More than 700 people die from it each day in the United States.