Zoll Medical Says Some AEDs Are Defective

Bloomberg News reports that "Zoll Medical Corp. said some of its AED Plus external defibrillators, used in public settings such as airports, have defective batteries and software, leading to failures to deliver a shock and two patient deaths." According to the company, it "began on Feb. 12 asking customers to download new software for 180,000 units that will help detect a potential defective battery." Zoll said that approximately "80,000 units that have been installed for at least three years are at the highest risk." Zoll's senior vice president of marketing said that "the AED Plus devices are located in health clubs, airports, schools and other public places, and used by emergency medical services personnel."