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AED advisory - ZOLL

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  • AED advisory - ZOLL

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    Zoll issues safety advisory, software fix for AED
    April 3, 2009 | Steve Stiles
    Chelmsford, MA - Zoll Medical Corp, the company based here and founded by external pacing and defibrillation pioneer Dr Paul M Zoll, has launched a "field corrective action" on its AED Plus automated external defibrillators manufactured prior to February 12, 2009 [1]. The action stems from a possible risk of battery failure and inability of the device's battery-monitoring software to detect the problem, according to the company.

    "As a result of these two issues, the AED Plus defibrillator may fail to deliver defibrillation shocks during treatment of sudden cardiac arrest," it said in a press release dated April 2.

    The problems may be present in units with serial numbers with the final six digits less than 200000, according to Zoll, which advises owners of such units to replace batteries installed more than three years ago and subsequently replace them every three years. It said it has identified at least four instances in which the defibrillator failed to deliver a shock as a result of the problems, including two in which the patient ultimately died.

    In a letter dated February 12, Zoll told its AED customers that "following a long period (typically greater than four years) without use, a Zoll AED Plus may prompt 'change batteries' during use and fail to deliver therapy. Turning the device off completely, waiting 10 seconds for the unit to reset, and then turning it back on is necessary to resume proper operation."

    In addition, the company is offering a software fix to the battery-monitoring problem, which is available for downloading and user installation. "This new software, which is included in current shipments of the AED Plus, can detect this battery defect condition if it occurs within the maximum five-year standby lifetime and alert the user to install fresh batteries."
    Knowledge is power ... Stay informed!
    YOU can make a difference - all you have to do is try!

    Dx age 12 current age 46 and counting!
    lost: 5 family members to HCM (SCD, Stroke, CHF)
    Others diagnosed living with HCM (or gene +) include - daughter, niece, nephew, cousin, sister and many many friends!
    Therapy - ICD (implanted 97, 01, 04 and 11, medication
    Currently not obstructed
    Complications - unnecessary pacemaker and stroke (unrelated to each other)

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