Adult Basic Life Support for Lay Rescuers

A colleague collapses in the staff room. A visitor is found unresponsive in reception. A parent becomes suddenly unwell at a school event. In these moments, adult basic life support for lay rescuers is not an abstract subject - it is the practical knowledge that helps someone recognise an emergency, call for help and begin life-saving action before an ambulance arrives.

For employers, schools, care settings and community organisations, this capability protects more than compliance. It gives staff a clear role when every second counts. People do not need to be clinicians to make a meaningful difference, but they do need current, hands-on training and the confidence to act.

What adult basic life support means in practice

Basic life support, often called BLS, is the immediate care given to a person whose breathing or circulation may have stopped. For a lay rescuer, the priority is straightforward: make the area safe, assess the person, summon emergency help, start CPR if needed and use an automated external defibrillator (AED) as soon as one is available.

Cardiac arrest is not the same as a heart attack. A heart attack is caused by a blockage affecting blood flow to the heart and the person may still be awake and breathing. Cardiac arrest means the heart has stopped pumping blood effectively. The person will be unconscious and not breathing normally. Without prompt CPR and defibrillation where appropriate, the chances of survival reduce rapidly.

That is why training should focus on recognition and action, not on asking staff to make a medical diagnosis. A trained lay rescuer learns what to look for, what to do next and how to work with emergency services.

Recognise when someone needs urgent help

Before approaching anyone, check for danger. Consider traffic, fire, electricity, machinery, violence, unsafe substances or any other risk to yourself, the casualty and bystanders. You cannot help effectively if you become another casualty.

When it is safe, check whether the person responds. Speak loudly, ask if they are alright and gently shake their shoulders.

If there is no response, Call for help and an AED. If you are alone, call 999 yourself, put the phone on speaker and follow the call handler’s instructions while you begin CPR.

Call 999 early and use the speakerphone

Tell the emergency call handler where you are, what has happened and that the person is unresponsive and not breathing normally. In a workplace, give practical access information as well, such as the building entrance, floor, gate code or which member of staff is waiting outside to direct the crew.

The call handler can provide real-time coaching. This is particularly valuable for someone who has not used their skills since training or feels overwhelmed by the situation. Keep the phone on speaker where possible so you can continue treatment while receiving instructions.

Ensure the airway is clear, open the airway by placing one hand on the forehead and lifting the chin. Look, listen and feel for normal breathing for no more than 10 seconds.

Normal breathing is regular and effective. Occasional gasps, snorting sounds or irregular breaths are not normal breathing. These can be agonal breaths, which may occur in the early stages of cardiac arrest. They are commonly mistaken for signs that someone is breathing adequately, delaying CPR at the moment it is most needed.

If the person is unresponsive and not breathing normally, treat it as a cardiac arrest.

The adult BLS actions every lay rescuer should know

A simple sequence gives staff something reliable to follow under pressure. The aim is not perfection. It is to start effective care quickly and keep it going until the ambulance service takes over, the person shows clear signs of recovery or you are physically unable to continue.

Start chest compressions without delay

Place the heel of one hand in the centre of the chest, put your other hand on top and interlock your fingers. Keep your arms straight and position your shoulders above your hands. Press down firmly and release fully after each compression.

For an adult, aim for a depth of around 5 to 6 cm and a rate of 100 to 120 compressions a minute. Let the chest rise completely between compressions and keep pauses as short as possible. Good-quality compressions circulate a limited but vital amount of oxygenated blood to the brain and heart.

If you have been trained and are able to give rescue breaths, use a ratio of 30 chest compressions followed by two breaths. Open the airway, pinch the nose, make a seal over the mouth and give two steady breaths, watching for the chest to rise. If you are unwilling or unable to give breaths, continue hands-only CPR. Starting compressions promptly is far better than doing nothing.

In a workplace with several trained people, change the person giving compressions about every two minutes if possible. CPR is physically demanding, and tired rescuers often deliver shallower compressions. A clear handover keeps interruptions to a minimum.

Use an AED as soon as it arrives

An AED is designed to be used by members of the public and workplace staff. It gives clear voice prompts and assesses the person’s heart rhythm. It will only advise a shock if a shock is appropriate.

Turn the device on, expose and dry the chest if necessary, then apply the pads exactly as shown on their diagrams. Keep everyone clear while the AED analyses the rhythm. If a shock is advised, make sure nobody is touching the person before delivering it. Restart CPR immediately when prompted.

An AED should not be treated as equipment for trained first aiders only. Organisations should make staff aware of where their AED is kept, how to access it outside normal hours and who is responsible for checking its pads, battery and signage. The device is most useful when people can find it quickly.

Common hesitation can cost valuable time

Many lay rescuers worry about causing harm, breaking ribs, being sued or getting the procedure wrong. These concerns are understandable, especially for staff who have never faced a real emergency. Yet an unresponsive person who is not breathing normally is already in a life-threatening situation.

Chest compressions can cause injury, including rib fractures. However, the greater risk is failing to act. A person in cardiac arrest needs immediate intervention. Good training helps staff understand this balance and gives them the practical experience to position their hands, apply sufficient pressure and continue despite the stress of the moment.

Another common delay is searching for a pulse. Lay rescuers are not expected to spend time checking for one. If the person is unresponsive and not breathing normally, call 999 and begin CPR. Emergency services will guide the response from there.

Build BLS capability around your workplace

A first aid needs assessment should consider more than headcount. Think about the people on site, the nature of activities, shift patterns, lone working, public access, travel time for emergency services and the likelihood of medical emergencies. A busy office, manufacturing site, school and care home each present different risks and different challenges for access, communication and responding quickly.

Training also needs to be practical. Staff should practise on manikins, use training AEDs and work through realistic scenarios relevant to their environment. The person who has rehearsed calling for help, directing colleagues and beginning compressions is more likely to act decisively than someone who has only watched a presentation.

For organisations across Merseyside, Lancashire, Cheshire and Greater Manchester, Training 2 U delivers instructor-led Basic Life Support training at your workplace. Courses are shaped around practical response, accreditation requirements and the realities of your setting, led by professionals with more than three decades of frontline clinical experience.

Keep skills current, not filed away

Formal first aid qualifications and workplace arrangements matter, but skills fade when they are not used. Regular refresher training gives staff the opportunity to practise CPR technique, respond to updated guidance and regain confidence with AED equipment.

It also creates a useful opportunity to test your internal arrangements. Can staff locate the first aid kit and AED? Does reception know how to guide ambulance crews in? Is there enough trained cover across shifts, holidays and separate areas of the site? These details can determine whether a well-intentioned response is swift and coordinated.

When an adult suddenly stops breathing normally, staff do not need to know everything. They need to recognise the emergency, call 999, start CPR and use the AED. Give your people the training and practice to do those things well - because the person who steps forward may be the reason someone gets home to their family.