What Is BLS?
BLS stands for Basic Life Support. It is the level of emergency care given to someone whose heart has stopped or who has stopped breathing, using nothing more than your hands, a barrier mask and an automated external defibrillator. No drugs, no advanced airway, no monitor — just the interventions that keep the brain supplied with oxygen until an advanced team can take over.
The short answer
BLS stands for Basic Life Support. It is emergency care for cardiac or respiratory arrest delivered without drugs or advanced equipment: recognising the arrest, high-quality chest compressions, rescue breathing with a mask, defibrillation with an AED, and relieving choking. A BLS Provider course certifies you to do all of it on adults, children and infants, and the card lasts two years.
When the heart stops, circulation stops with it. Brain cells begin to die within minutes, and every minute without effective compressions measurably reduces the chance of survival. Nothing an advanced team does later can undo that damage. So the single most valuable thing anyone can do at a cardiac arrest is start high-quality compressions early and keep them going.
Basic Life Support is the training that makes that reliable. It exists because the difference between a bystander who freezes and a bystander who compresses correctly is, in a meaningful number of cases, the difference between a patient who walks out of hospital and one who does not. Everything in the course is arranged around buying time.
Four things, in order:
A BLS Provider course also covers team dynamics — who leads, who compresses, who ventilates, and how rescuers swap before fatigue quietly degrades compression quality — and the relief of choking in adults, children and infants.
A general first aid course is broad and shallow: bleeding, burns, fractures, fainting, allergic reaction, and some CPR. Basic Life Support is narrow and deep. It covers one emergency — the arrest — and it drills that one emergency to a measured standard on adults, children and infants, including two-rescuer technique and bag-mask ventilation that a general first aid course does not teach at all.
That is why healthcare employers ask for BLS specifically. If your employer has asked for CPR rather than BLS, it is worth checking which they mean before you book; the distinction is set out in BLS vs CPR.
Principally healthcare staff: nurses, doctors, dentists, paramedics, physiotherapists, radiographers, laboratory and pharmacy staff, and students on clinical placement. In the UAE a current BLS card is a normal condition of clinical employment, checked at onboarding and again at credentialling.
It is also taken by people who are not clinicians but are likely to be first on scene — school staff, lifeguards, gym instructors, security teams, corporate first responders. There is no prerequisite for the course and no prior qualification is assumed. If you are in the second group, it is worth reading BLS vs CPR first, because a Heartsaver CPR AED course is often the better fit.
Watch, practise, be assessed. You see each skill demonstrated, you practise it on a manikin while an instructor corrects you in real time, and then you are tested on it. The manikins give live feedback on compression depth, rate and recoil, so nobody has to guess whether they are doing it right.
The assessment is physical, not written. This matters more than it sounds: it is the reason an employer treats the card as evidence of competence rather than attendance, and the reason a certificate bought online without a practical component is worth nothing to a credentialling officer.
An American Heart Association BLS Provider eCard, valid for two years, verifiable online by an employer or a regulator using a code printed on the card. When the two years are up you retrain rather than simply re-sit a test; see BLS renewal and recertification.
BLS is the foundation. Above it sits ACLS, which adds rhythm recognition, drugs and advanced airways for adult patients, and PALS, which does the same for children. Neither replaces BLS. Both assume you can already deliver it, and both open with the assumption that basic life support is already running well in the background — which is why candidates who arrive with rusty basics find the advanced courses much harder than they need to be.
BLS stands for Basic Life Support: the emergency care given to a person in cardiac or respiratory arrest using chest compressions, rescue breathing and an automated external defibrillator, before advanced care arrives.
No. First aid covers a wide range of injuries and illnesses at an introductory level. Basic Life Support covers one emergency, cardiac and respiratory arrest, in depth, and is assessed on adults, children and infants including two-rescuer technique and bag-mask ventilation.
No. There is no prerequisite. Most candidates are healthcare staff because their employers require a current card, but the course is open to anyone and is regularly taken by teachers, lifeguards, security staff and corporate first responders.
The skills themselves are simple; performing them to the measured standard under observation is what takes practice. Compression depth is the most common thing candidates need to correct. The course is structured so that everyone reaches the standard within the session rather than being sorted into passes and failures.
BLS uses only hands, a barrier mask and an AED. Advanced Life Support adds cardiac monitoring, manual defibrillation, resuscitation drugs and advanced airway management, and is taught as ACLS for adults and PALS for children. ALS assumes competent BLS is already running underneath it.
Safety First Medical Services is an American Heart Association training centre on Al Reem Island. Classroom, HeartCode blended and on-site group BLS, with a two-year AHA Provider eCard on completion.
Everything on this page is checked against the awarding body and the UAE health authorities. If you need the definitive position on a licensing question, these are the places to look.
Last reviewed by the training team at Safety First Medical Services, an American Heart Association training centre at Addax Office Tower, Al Reem Island, Abu Dhabi. Call +971 55 761 9841 or email training@safetyfirstmed.ae.