When a person suddenly collapses, every second counts. It is precisely in these critical moments that the practical skills acquired during BLS-AED training truly come into their own. As part of the overall first aid response, this training is an essential pillar for intervening quickly and effectively in the event of cardiac arrest. It teaches technical, repeatable and life-saving actions that help stabilise the casualty before professional rescuers arrive. Whether faced with an emergency at home, in a public place or at work, mastering the fundamentals of BLS-AED is a powerful way to save lives. To fully understand its overall value, it is essential to explore in detail the overall benefits of BLS-AED training.

What practical skills are learned during BLS-AED training?

Taking BLS-AED training enables participants to acquire essential practical skills for responding effectively to cardiac arrest. These skills combine technical actions, appropriate reflexes and an understanding of intervention priorities.

The first skill is the safe assessment of the situation, which includes analysing hazards, protecting oneself, and checking the casualty’s level of consciousness and breathing. This step is guided by the X-ABCDE algorithm, which structures the response according to vital priorities.

The next step is immediately activating the emergency services. Participants learn to use emergency number 144, make a hands-free call and follow the dispatcher’s instructions, including real-time guidance for performing chest compressions.

Mastering chest compressions is a fundamental pillar. The training teaches correct hand positioning, a depth of 5 to 6 cm, a rate of 100 to 120 compressions per minute, and proper recoil between each compression. Using a metronome or electronic feedback device is recommended to ensure high-quality compressions.

Participants also learn to provide rescue breaths (mouth-to-mouth or using a mask), clear the airway when necessary, and switch to continuous compressions if rescue breaths are not possible.

The use of an automated external defibrillator (AED) is covered in detail: switching it on immediately, positioning the pads correctly, carrying out a rapid analysis and delivering the shock within 3 to 5 minutes of the collapse.

Finally, the skills covered include placing a casualty in the recovery position, managing choking (back blows and the Heimlich manoeuvre), recognising the signs of a stroke or heart attack, and adapting procedures for children and infants. All of this takes place within a Swiss legal framework that encourages good-faith action and recognises the role of the first responder.

Mastering chest compressions for maximum effectiveness

Chest compressions are one of the key techniques taught in BLS-AED training. They help maintain minimal blood circulation while awaiting defibrillation or the arrival of the emergency services. A proper chest compression technique — hand position, compression depth and a consistent rate — maximises the casualty’s chances of survival.

Learning to use an AED step by step

Using an AED is not complicated, provided you have been trained. During the course, participants learn the essential steps for safe AED use: switching it on, applying the pads correctly and following the voice prompts. Every minute counts, and this practical know-how reduces response times.

Recognising cardiac arrest in adults and children

Knowing how to detect the signs of cardiac arrest — unconsciousness, abnormal or absent breathing — is crucial. The training helps participants quickly identify cardiac arrest in both adults and children, enabling rapid and appropriate action from the very first moments.

Adopting the right response when an unconscious casualty is breathing

When faced with an unconscious casualty who is still breathing, the appropriate actions are different. Trainees learn to place the person in a safe position, monitor their breathing and prepare to act if their condition changes.

Clearing an adult’s airway: life-saving actions

Choking can quickly become life-threatening. During the training, participants learn the airway clearance procedure, including back blows and abdominal thrusts, so they can respond effectively.

Resuscitating a child vs. an adult: understanding the differences

Paediatric resuscitation requires specific adjustments: compression depth, the number of rescue breaths and the type of AED pads. Through the training, participants acquire the skills to adapt resuscitation to the casualty’s age.

Identifying the early signs of a stroke to raise the alarm in time

Recognising the early signs of a stroke is an essential skill. The FAST method (Face, Arm, Speech, Time) enables rapid detection of symptoms and immediate notification of the appropriate emergency services.

Alerting the emergency services effectively in an emergency

A well-structured emergency call can save vital time. Trainees learn to provide clear and precise information, remain calm and follow the dispatcher’s instructions until the emergency services arrive.

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Learn more about managing cardiac arrest and avoiding common mistakes

  • The right actions before the emergency services arrive: Discover the immediate responses to adopt as soon as someone collapses. This page explains what to do in the event of cardiac arrest, even without medical equipment.

  • Avoiding pitfalls during an intervention: Even with training, certain mistakes can compromise the effectiveness of BLS-AED. This resource highlights common mistakes in an emergency so they can be better anticipated.

  • Training to act more effectively in real life: Whether at home or in a public space, BLS-AED training turns every citizen into a potential lifesaver. Discover how this training saves lives every day, with practical examples from family and urban settings.