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The Complete AED Pad Placement Guide: Where and How to Place AED Pads Properly

The Complete AED Pad Placement Guide: Where and How to Place AED Pads Properly

AED Best Brands Editorial Team

Independent AED research desk

Updated August 29, 2026
The Complete AED Pad Placement Guide Where and How to Place AED Pads Properly | AED Best Brands

Placing AED pads correctly is key for a strong shock in sudden cardiac arrest. It improves the defibrillator’s performance and helps reduce potential harm to the patient. Adults and kids often need pads in different spots. Still, some cases might need specific changes. When pads are placed correctly, survival chances go up, and the device works well.

Adult Pad Placement

Defibrillators usually provide voice prompts and visual cues. These help users place the AED pads correctly. One pad goes on the upper right side of the chest. The other pad is placed just below the left armpit. This placement directs the shock through the heart, making the response more effective.

AED pad placement on an infant.

In babies under one year old, breathing problems, not heart issues, usually cause cardiac arrest. It’s important not to mistake choking for cardiac arrest. If the baby isn’t choking and you have an AED, start CPR right away. Call emergency services, then follow the AED instructions.

When using an AED on a baby, place one pad in the center of the chest and the other on the upper back. If available, use pediatric pads or child mode. If only adult pads are accessible, users can still place them the same way, as long as they don’t touch. Using adult pads promptly is safer than delaying care.

Child Pad Placement

Use pediatric AED pads for kids aged one to eight or under 55 pounds, if available. Position one pad on the chest and the other on the upper back, making sure they don’t overlap.

CPR for infants and children uses different methods for chest compressions. Infants need two fingers or thumbs, while children need one or two hands, depending on their size. Compress about one-third of the chest’s depth. Let it fully recoil after each push. Rescue breaths should only be given by those with proper training.

Defibrillator Pad Placement on a Pregnant Woman

During cardiac arrest in pregnancy, using CPR and an AED without delay is vital. Concerns about pregnancy shouldn’t stop defibrillation. A quick response boosts survival for both the mother and baby.

For a pregnant woman, place one AED pad above the right breast. Put the other pad on the left side of the rib cage, directly on the skin. Perform CPR the same way as for any adult. If she wakes up, turning her onto her left side can help blood flow to her heart and the baby.

If you’re calling 9-1-1 for a pregnant woman, make sure to mention her pregnancy. In the late stages, even if the mother doesn’t survive, responders can still do a C-section. This can help save the baby.

AED Pad Placement for Cardiac Arrest Victims with a Pacemaker

While pacemakers help maintain a regular heart rhythm, they can’t stop fibrillation. In a cardiac arrest, using an AED on someone with a pacemaker is safe. It’s also essential to help restore a normal heartbeat.

Locate the pacemaker first, typically found on the upper left chest. If it’s there, place the AED pads as usual—one on the upper right chest and the other on the lower left side. If the pacemaker is on the right, move the pad at least an inch away. Then, put the second pad on the lower left rib cage.

Anterior-Lateral vs. Anterior-Posterior Pad Placement

AED pads are usually placed in one of two standard spots. The position depends on the situation.

  • For anterior-posterior pad placement, place one AED pad on the chest and the other on the back.
  • In anterolateral placement, place one AED pad on the upper right chest. Then, put the other pad a few inches below the left armpit on the rib cage.

Adults usually have AED pads applied to the front and side of their chests. For children, the pads are often placed on the front and back. Yet, medical professionals may also use the anterior-posterior placement for adults. In this approach, we place one pad below the left nipple and the other on the back beneath the left shoulder blade.

Special Situations

Check for anything that could interfere with pad contact before using an AED. Look for chest hair, moisture, or medicated patches. Quick adjustments may be necessary. For more details, refer to AED special considerations.

Hairy Chest

Too much chest hair can keep AED pads from sticking well. This can make the shock less effective. Shave the pad placement areas without delay if needed. Use the razor that usually comes with most AED kits.

Wet Patient

Because water conducts electricity, it is important to place the patient on a dry surface. Remove any wet clothing and dry the chest completely before applying AED pads.

Medicated Patch

Do not place AED pads over medicated patches, as they can disrupt the shock. Use gloves to remove the patch and clean the skin promptly before attaching the pads.

If in doubt, follow the manufacturer’s instructions.

AED pads are typically placed either on the front and side or front and back of the chest. The pads include clear images for proper placement. This makes the instructions easy to follow, but a few precautions are needed.

Use an AED only if someone is unconscious and has abnormal breathing. This shows clear signs of cardiac arrest. Ensure that you place the pads on dry, bare skin, away from any pacemaker or medicated patch. Using an AED quickly, plus CPR and emergency care, greatly boosts survival chances.

FAQs

What is anteroposterior AED pad placement?

For anteroposterior AED pad placement, put one pad in the center of the chest. Then, place the other pad on the back, under the shoulder blade. This method is often used for kids. It can also work for adults in certain medical cases.

When should anteroposterior placement of AED pads be used?

This technique is commonly used for infants and small children. It helps when standard pad positions can’t be used due to medical devices like pacemakers. In certain adult cases, healthcare professionals may opt for anteroposterior placement. This choice helps achieve the best current flow through the heart.

Where should I place AED pads on adults?

For adult AED pad placement, use the anterolateral method. Place one pad on the upper right chest. Then, place the other pad on the lower left side, near the rib cage. Yet, anteroposterior AED pad placement can be an alternative when necessary.

Can you place AED pads over a pacemaker or a medicated patch?

No, you should place AED pads away from a pacemaker or medicated patch. If needed, move the patch a bit, at least an inch from the device. If that doesn’t work, take off the patch and clean the skin before putting the pads back on.

Why is AED pad placement important?

Proper AED pad placement is key, whether you use anterolateral or anteroposterior. This ensures the shock flows correctly through the heart. As a result, it maximizes defibrillation and improves survival odds during cardiac arrest.

Conclusion

Put AED pads on the right way. This is key for giving a strong shock in cardiac arrest. You can place them anterolateral or anteroposterior. The correct placement of AED pads is important. You should also adjust for special situations. For example, if someone has a pacemaker or a medicated patch, it matters. These details can save lives. Proper positioning is key for children and adults. It lets electrical current flow through the heart. This helps improve survival chances. Knowing how to place AED pads from front to back helps responders take swift action. This knowledge can save lives when time is critical.

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References · primary sources

  1. ClinicalAmerican Heart Association. CPR Facts and Stats. cpr.heart.org facts
  2. ProgramAmerican Heart Association. Implementing an AED Program, 2023 guide (placement, pediatric guidance, readiness). cpr.heart.org AED guide (PDF)
  3. RegulatoryUS FDA. Automated External Defibrillators and Premarket Approval database. fda.gov AEDs
  4. ManufacturerZOLL Medical. AED Plus and AED 3 product and consumables documentation. zoll.com AEDs
  5. ManufacturerPhilips. HeartStart OnSite and FRx support, pads and battery IFU. philips.com emergency care
  6. ManufacturerStryker. HeartSine Samaritan PAD and Pad-Pak documentation. stryker.com emergency care
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