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AED: Who Needs Them and How They Work in an Emergency

Writer's picture: Jade ClancyJade Clancy

AED defibrillator for first aid and cpr training

As an experienced CPR instructor, I often get asked about Automated External Defibrillators (AEDs). These life-saving devices are becoming more common in public spaces, but there’s still a lot of confusion about who should have access to them and how they actually work in an emergency. Let’s dive into the essentials.


What is an AED?

An Automated External Defibrillator (AED) is a portable device that delivers an electric shock to the heart to restore its normal rhythm. AEDs are designed to be user-friendly, even for individuals with minimal training. They’re primarily used to treat sudden cardiac arrest (SCA), a life-threatening condition where the heart stops beating effectively.


Who Needs an AED?


1. Public Spaces: AEDs should be readily available in areas where large groups of people gather. This includes schools, sports arenas, airports, shopping malls, and community centers. Time is critical during sudden cardiac arrest, and having an AED nearby can significantly improve survival rates.

2. Workplaces: Workplaces, especially those with high-stress environments or physically demanding jobs, should consider having an AED on-site. OSHA recommends AEDs for industries with higher risks of cardiac emergencies.

3. Gyms and Fitness Centers: Vigorous physical activity can sometimes trigger cardiac events, making gyms and fitness centers ideal locations for AEDs.

4. Schools: Sudden cardiac arrest doesn’t just affect adults. Young people, especially athletes, can also be at risk. Schools should have AEDs accessible and staff trained to use them.

5. Homes: In some cases, individuals with known heart conditions or a history of cardiac arrest may benefit from having an AED at home. Discuss this with a healthcare provider to determine if it’s a good option.


How Does an AED Work?

Using an AED might sound intimidating, but it’s straightforward. Most devices come with clear, step-by-step voice instructions. Here’s what typically happens:


  1. Turn on the AED: The first step is to power on the device. Some AEDs will turn on automatically when the lid is opened.

  2. Attach the Pads: The device comes with adhesive pads that need to be placed on the person’s chest. Diagrams on the pads show exactly where they should go.

  3. Analyze the Heart Rhythm: Once the pads are in place, the AED analyzes the heart’s rhythm to determine if a shock is needed. Ensure no one is touching the person during this process.

  4. Deliver the Shock: If the AED determines a shock is necessary, it will instruct you to press a button to deliver it. Some models deliver the shock automatically.

  5. Resume CPR: After the shock, the AED will prompt you to continue CPR until emergency medical services (EMS) arrive or the person shows signs of life.


Key Points to Remember

  • AEDs are Safe: Modern AEDs are designed to analyze heart rhythms accurately and will not deliver a shock unless it’s needed.

  • Training Helps but Isn’t Required: While CPR and AED training improve confidence and efficiency, anyone can use an AED in an emergency. Just follow the device’s prompts.

  • Time is Critical: For every minute that passes without defibrillation, the chances of survival decrease by 7-10%. Acting quickly can make the difference between life and death.


Final Thoughts

AEDs are a critical component of emergency response, bridging the gap between sudden cardiac arrest and professional medical care. Whether you’re at work, at school, or even at home, knowing where the nearest AED is and how to use it can save lives. If you haven’t already, consider taking a CPR and AED training course—you never know when you might need to be a hero.


Stay prepared, stay informed, and remember: every second counts in an emergency.


About the Author


Jade Clancy, founder and instructor of AceHopeCPR

Jade Clancy is the Founder & Lead Instructor for AceHopeCPR. Jade's professional experience comes from over 20 years in the education field. She has her BA from Indiana University, has taught in various public school sectors and now resides and teaches in Central Florida.


AceHopeCPR provides BLS/Provider certifications and First Aid certification courses for healthcare professionals, first responders and individuals. Most classes are on-site at the Heather Golf Club in Weeki Wachee, Florida. We do offer off-site and at your location of choice throughout Central Florida and Georgia.



To learn more about how AceHopeCPR can help your business stay in compliance or get your BLS certification, click HERE.


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To learn more about AceHopeCPR and our CPR and First Aid courses. Visit us at www.AceHopeCPR.com

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