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WEARABLE DEFIBRILLATORS

The LifeVest wearable cardioverter defibrillator is a treatment option for sudden cardiac arrest that offers patients advanced protection and monitoring as well as improved quality of life.

Unlike an implantable cardioverter defibrillator (ICD), the LifeVest is worn outside the body rather than implanted in the chest. This device continuously monitors the patient's heart with dry, non-adhesive sensing electrodes to detect life-threatening abnormal heart rhythms. If a life-threatening rhythm is detected, the device alerts the patient prior to delivering a shock, and thus allows a conscious patient to disarm the shock. If the patient is unconscious, the device releases a gelLifevest over the therapy electrodes and delivers an electrical shock to restore normal rhythm

The wearable defibrillator is a treatment option for patients who are at high risk for sudden cardiac arrest (SCA) or sudden cardiac death (SCD). Potential patient groups who may benefit from the technology include:

  • Post-myocardial infarction (MI) patients with complications
  • Cardiac surgery patients with complications
  • Heart transplant waiting list patients
  • Advanced heart failure patients
  • Patients undergoing drug loading with potentially pro-arrhythmic medications
  • Patients who need an ICD, but have a condition that prevents or delays surgery (such as an infected ICD pocket)
  • Patients who simply do not want to undergo surgery or have an implant
  • The LifeVest was designed as an intermediate-term treatment option for people at high risk for SCA. Right now, people at a high, short-term risk of SCA are typically monitored in a hospital intensive care unit (ICU) or coronary care unit (CCU). With monitored beds costing up to $2,000 a day, this option quickly becomes very expensive and is primarily reserved for critical care patients.

Patients with a high, long-term risk of SCA are often candidates for an implantable cardioverter defibrillator (ICD), but this option is also expensive (up to $65,000) and requires surgery. According to Morgan Stanley, only one out of six US patients who need an ICD actually get one.

The LifeVest fills the therapeutic gap between hospitalization and an ICD. The LifeVest has the same important characteristics of both an ICU/CCU and the ICD; it continuously monitors the heart and is designed to provide prompt defibrillation when needed. It is believed that the wearable defibrillator has the potential to become the standard of care for intermediate-term patients at risk. And, in cases when an ICD is not feasible, it also can serve as a longer-term alternative.

To date, more than 23,000 patients have worn the wearable defibrillator and, approximately 98% have been successfully rescued from a life threatening episode of VF/VT.