Choosing Between Automatic and Semi-Automatic AEDs

If you're considering an Automated External Defibrillator (AED), it's important to understand the difference between automatic and semi-automatic models. Both types function in the same way when it comes to analysing the heart rhythm and determining whether a shock is needed. However, there is one key distinction: how the shock is delivered.

Understanding the Difference

The Mediana A16 AED gives users the option to choose between a fully automatic or semi-automatic model. This flexibility isn’t always available on older AEDs, which may only come in one configuration.

Semi-Automatic AEDs

A semi-automatic AED will analyse the heart rhythm, and if a shock is advised, it will begin charging. The device will then instruct the rescuer with a clear voice prompt such as, "Shock advised. Press the flashing button." In this case, the rescuer must manually press the shock button to deliver the shock.

This manual action provides a level of control, and it is crucial to listen to and follow the AED's instructions carefully. The shock will not be delivered unless the button is pressed, even if one is advised.

Fully Automatic AEDs

A fully automatic AED performs the same analysis, but if a shock is needed, the device will automatically count down and deliver the shock without the need for user intervention. You might hear, "Shock advised. Do not touch the patient. Shock will be delivered in 3, 2, 1." The AED will then administer the shock automatically.

There is no need to press a button on a fully automatic model, and the device will clearly inform you when it is safe to touch the patient again.

Which AED is Right for You?

Choosing between an automatic or semi-automatic AED is largely down to personal preference or organisational requirements. Some users prefer the fully automatic option to remove the hesitation or stress of pressing a button. Others feel more comfortable having control over when the shock is delivered.

Whichever model you choose, rest assured that both types are safe and effective. AEDs will only deliver a shock if the patient has a shockable heart rhythm. You cannot cause harm by following the unit’s instructions.

Conclusion

There are no significant functional differences between automatic and semi-automatic AEDs aside from how the shock is delivered. The decision ultimately comes down to your preference and how the AED will be used in your environment.