BLS (Main)

Adult

Compressions
- Push hard, deep (at least 2 inches, or 5 cm) and fast (100-120 compressions per minute)
- Do everything possible to minimize compression interruption
Ventilation
- 30:2 ratio when do not have advanced airway (1 and 2 rescuer)
  - Do not overventilate! (leads to decreased venous return)
- 8-10 breaths per min when intubated

Compressions
- Push hard (≥ 1/3 chest diameter) and fast (100-120/min), but no more than 6 cm in adolescents
Ventilation
- NO perfusing rhythm
  - 15:2 ratio when do not have advanced airway (30:2 for 1-rescuer)
    - Do not overventilate! (leads to decreased venous return)
    - Deliver breath with inspiratory time of 1s
  - 8-10 breaths per min when intubated
- YES perfusing rhythm
  - Give rescue breaths 12-20 per min (“squeeze-release-release”)

2015 AHA Guidelines