A defibrillator, often called a “defib,” is a life-saving device designed to restore a normal heartbeat in people experiencing sudden cardiac arrest (SCA). While most people have heard of defibrillators, many are not familiar with how they work, the different types available, or when and why to use them. This guide will help you understand everything you need to know about defibs, how they function, and why they are crucial in emergency situations.
A defib is a device that delivers an electric shock to the heart to restore its normal rhythm. Sudden cardiac arrest occurs when the heart’s electrical system malfunctions, causing it to beat irregularly or stop beating altogether. A defibrillator can provide a shock that can restart or normalize the heart’s rhythm, greatly increasing the chance of survival.
When someone experiences sudden cardiac arrest, a defib is used to assess the heart’s rhythm and determine if a shock is necessary. Here’s a simple breakdown of how a defib works:
There are several types of defibs, each designed for different settings and levels of training. Understanding the differences can help you choose the right defib for your needs.
An AED is the most common type of defib which you may find in public places, workplaces and homes. These devices are easy to use, even by untrained bystanders, and come in two main forms:
Learn more about different types of AEDs and how they work.
Healthcare professionals typically use manual defibs in hospitals and ambulances. Unlike AEDs, these require the operator to interpret the heart’s rhythm and manually select the energy level and deliver the shock. They provide more control over the defibrillation process, making them ideal for advanced medical settings.
ICDs are small devices that a surgeon implants in patients who are at high risk of sudden cardiac arrest. They continuously monitor the heart’s rhythm and deliver shocks automatically if they detect a dangerous arrhythmia. While not designed for emergency use by the general public, ICDs are a critical tool in managing long-term cardiac health.
1. Increasing Survival Rates
Defibs can dramatically increase the chances of surviving a sudden cardiac arrest. According to the British Heart Foundation, using a defib within the first few minutes of an SCA can increase survival rates by up to 70%. Without immediate defibrillation, the chances of survival decrease by 10% with every minute that passes.
2. Easy to Use in Emergencies
Modern defibs, especially AEDs, are user-friendly for ease of access. Clear voice prompts and visual instructions guide users through every step, from attaching the pads to delivering a shock. This ease of use allows bystanders to provide help even if they have no medical training.
3. Available in Public and Private Spaces
Defibs are now widely available in public spaces, workplaces, gyms, airports, and shopping centers. Having a defib on hand means you can act quickly in the event of an emergency, providing immediate care while waiting for professional medical responders.
When choosing a defib, consider where abouts and who will be using it. For workplaces, public spaces, or home use, an AED is usually the best choice due to its simplicity and ease of use. For medical professionals, a manual defib may offer the control needed for more advanced care.
If you’re looking to purchase a defib for your home or business, check out our defib buying guide to make your decision easy – Defibrillator Buying Guide – Which AED is right for you? (aed-defib-shop.co.uk). We offer a variety of models to suit different needs and settings.
A defib is more than just a piece of equipment—it’s a life-saving tool that can make a critical difference in an emergency. Whether in a public place, workplace, or home, having a defib available ensures you can act quickly and confidently in a cardiac emergency. Understanding how defibs work and the different types available will help you make informed decisions about choosing the right one for your needs.
To learn more about defibs or to explore our product range, visit our Defib Products Page