BLS stands for Basic Life Support. BLS certification may refer to two things:
Training that includes Healthcare Provider level skills such as 2-person CPR, pulse checks, bag valve mask use, and rescue breathing without compressions for people that have a pulse.
Countries outside of the United States will often use the term BLS when referring to CPR training. We have also found that many healthcare companies within the U.S. will recommend that their employees get BLS training.
BLS can be performed outside of hospitals by emergency medical technicians (EMTs), paramedics, and other qualified bystanders. Paramedics, nurses, doctors, physicians, EMTs, first responders, public safety professionals, and other healthcare related occupations tend to take BLS classes because of the additional skills that they need to use on a regular basis.
Both CPR and BLS classes will teach CPR (for adults, children and babies) for one rescuer, choking and first aid in the same way.