| 1 Rescuer Compression to Ventilation ratio | 2 Rescuer Compression to Ventilation ratio | Compressions | Rescue Breaths | |
| Adult CPR | 30:2 | 30:2 | -Check carotid pulse - at least 100/minute - at least 2 inches depth Compressions |
- 1 second duration - Every 5-6 seconds - 10-12 breaths/minute |
| Child CPR (1-13yrs) | 30:2 | 15:2 | -Check carotid pulse - at least 100/minute -2 inches or at least 1/3rd the depth of the chest |
- 1 second duration - Every 3-5 seconds - 12-20 breaths/minute |
| Infant CPR (0-11 months) | 30:2 | 15:2 | - Check brachial pulse - at least 100/minute -1 ½ inches or at least 1/3rd the depth of the chest |
- 1 second duration - Every 3-5 seconds - 12-20 breaths/minute |
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