Cardiac Life Vest: What You Need to Know

Cardiac Life Vest


A cardiac life vest, also known as a wearable cardioverter defibrillator (WCD), is a device that is worn by people who are at risk of sudden cardiac arrest (SCA). SCA is a life-threatening condition that occurs when the heart suddenly stops beating. A cardiac life vest can deliver an electric shock to the heart to restore a normal heartbeat.

The cardiac life vest consists of three parts:

  • A garment that is worn under the clothes.
  • An electrode belt that is attached to the garment.
  • A monitor that is worn around the waist or shoulder.

The garment and electrode belt have electrodes that connect to the heart. The monitor continuously monitors the heart rhythm and can deliver an electric shock if it detects a life-threatening arrhythmia.

The cardiac life vest is typically worn for 12 to 24 months. During this time, the patient will need to see their doctor regularly to monitor the device and their heart health.

The cardiac life vest is a safe and effective way to prevent SCA. It has been shown to reduce the risk of death from SCA by up to 80%.

Who Needs a Cardiac Life Vest?

People who are at risk of SCA include those who have had a heart attack, heart failure, or an abnormal heart rhythm. The risk of SCA is also higher in people who have certain medical conditions, such as cardiomyopathy, congenital heart defects, and arrhythmias.

If you are at risk of SCA, your doctor will discuss the benefits and risks of a cardiac life vest with you.

How Do I Care for My Cardiac Life Vest?

If you are prescribed a cardiac life vest, it is important to care for it properly. This includes:

  • Changing the battery every day.
  • Washing the garment every 1-2 days.
  • Keeping the device dry.
  • Not exposing the device to extreme temperatures.

Your doctor or nurse will provide you with more specific instructions on how to care for your cardiac life vest.

Cardiac Life Vest


A cardiac life vest is a wearable device that can deliver a shock to the heart if it starts to beat abnormally. This can help to prevent sudden cardiac death.



Cardiac Life Vest FAQs

The LifeVest is worn directly against the patient’s skin and constantly monitors the heart’s rhythm. If it detects a dangerous arrhythmia, it delivers a treatment shock to restore a normal heartbeat, acting as a wearable guardian for the heart.

The LifeVest is typically used as a temporary measure for patients at high risk of sudden cardiac arrest during the period when their heart condition is unstable or recovering from a heart event. Once their condition stabilizes, alternative treatments or implantable devices may be considered.

The ZOLL LifeVest is prescribed for patients at high risk of sudden cardiac arrest, including those who have recently experienced a heart attack, undergone cardiac surgery, or have certain heart conditions that put them at risk.

Yes, the LifeVest is designed to be comfortable and worn discreetly under clothing. It is adjustable to fit different body shapes and sizes, allowing patients to continue their daily activities while being protected by the device.

The ZOLL LifeVest is a wearable medical device designed to enhance cardiac safety by continuously monitoring the heart and delivering a life-saving shock if a life-threatening arrhythmia occurs.

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