The US Food and Drug Administration has issued yet another warning regarding the recall of the LifeVest 4000, after two patients died in relation to these medical devices.
The deaths and patient issues resulted from the LifeVests having an electrical issue that resulted in its failure to deliver the necessary and life-saving electrical shock to the patient’s heart to restore a normal heart beat.
The vest, manufactured by Zoll Medical, is a wearable automatic defibrillator that is used to help adults struggling with arrhythmias (abnormal heart beats), as well as in adults and children who are at risk for cardiac arrest and cannot use an implanted defibrillator. The LifeVest works by monitoring the patient’s heart, and if it detects a life-threatening heart beat pace, then it will deliver an electrical shock to the patient’s heart to restore a normal heartbeat.
At least two people have now died because their vests failed to activate because of an electrical circuit failure. Other patients have reported burns and rashes caused by the vest activating erroneously. A range of lawsuits are currently active, alongside the FDA investigation.
The FDA is asking all users of the LifeVest to immediately contact the manufacturer to request a replacement device if their vest is showing an error message that says “Call for Service / Message Code 102.”
This is not the first time that Zoll and its LifeVest 4000 have been on the FDA’s warning list. Back in January 2018, the agency warned patients and health care providers of a potential issue in the charging circuit of the LifeVests—a circuit issue that may cause malfunction, preventing the vest from delivering the life-saving shock to the patients wearing the device. The FDA told users of the LifeVest to be aware of the potential issue and to contact Zoll to replace their device if they received the “Message Code 102” error signal. Alongside this initial report, the FDA warned that failure to replace
these faulty devices immediately could lead to serious patient harm or even death, because the error message could mean that the LifeVest would not deliver the required life-saving electrical shock when needed.
This initial warning by the FDA prompted Zoll to enact a voluntary recall of the vests in January 2018. According to the company, some vests need to be replaced when they display the Message Code 102 service warning.
The company says it is also updating its software for the LifeVest devices. This software update will help make the warning “Message Code 102” stronger and more obvious to patients, which will help users to recognize that their device is subject to this defect and needs replacement. Upon receiving a patient request, Zoll says it will deliver a replacement device within 24 hours of the call. The company said it also issued a letter outlining the risk and the process for requesting a replacement vest with cardiac surgeons and other health care providers.
The FDA now says that it accepts the new, more persistent and prominent patient alert that comes with the software update. The agency said it believes that the alert will help increase patients’ awareness of the issue and potential risk of continuing to wear the vest without replacement.
Now, the FDA reports that it is hoping to increase patient awareness about the risks of continuing to use LifeVests that display the Message Code 102 error. The agency is reminding surgeons, health care
providers, patients and patient care providers of the importance of calling Zoll immediately if they see the error message appear.