Defibrillator (AED)
Definition: A medical device that delivers an electrical shock to the heart to restore a normal rhythm during cardiac arrest. The most common type seen by the public is an Automated External Defibrillator, or AED, which is designed to be used by anyone, including parents and bystanders with no medical training.
Parent Tip: If you find someone unresponsive and not breathing normally, start CPR right away and send someone to get an AED if one is nearby. Most public places like schools, gyms, malls, airports, and sports facilities have AEDs mounted in a visible location, often in a green or red wall cabinet. Think about the places you frequent with your family and the next time you are there, look around and see if you can find their AED. The device itself talks you through every step. Turn it on, follow the voice prompts, and let it do its job. You cannot accidentally shock someone who does not need it, because the AED only delivers a shock if it detects a rhythm that needs one.
Using an AED on a Child
- For children 8 years old and up, use the standard adult pads
- For children under 8 or under 55 pounds, use pediatric pads if available, which deliver a smaller energy dose
- If pediatric pads are not available, use adult pads but make sure the pads do not touch each other on the child's chest
- Place one pad on the upper right chest and the other on the lower left side, or one on the front and one on the back for smaller children
- Keep doing CPR while the AED is being attached and follow the device's voice prompts
Why It Matters: Survival from sudden cardiac arrest drops by about 10 percent for every minute that defibrillation is delayed. When an AED is used within the first few minutes of cardiac arrest, survival rates can be as high as 70 percent. That is why public access to AEDs has expanded so much over the past two decades. If you have never used one, the most important thing to know is that you do not need training. The device guides you through it, and using it correctly is far better than not using it at all.
Related Terms: AED, Chest Thrusts, CPR, Pulse Check, Rescue Breathing, Unconsciousness
Written and reviewed by Jeremy Manke, Firefighter / Paramedic (22 years of emergency service)