100 to 120 per minute. CPR method involving chest compressions only visual impact cardio pdf recommended for untrained rescuers.
In children, however, only doing compressions may result in worse outcomes. CPR alone is unlikely to restart the heart. CPR may succeed in inducing a heart rhythm that may be shockable. File:How to save lives with CPR. CPR guidelines recommend that lay persons should not be instructed to check the pulse, while giving healthcare professionals the option to check a pulse. CPR is considered futile but still recommended. CPR is no less important.
Used alone, CPR will result in few complete recoveries, though the outcome without CPR is almost uniformly fatal. In cities such as Seattle where CPR training is widespread and defibrillation by EMS personnel follows quickly, the survival rate is about 20 percent for all causes and as high as 57 percent if a witnessed “shockable” arrest. In cities such as New York, without those advantages, the survival rate is only 5 percent for witnessed shockable arrest. In adults compression-only CPR by bystanders appears to be better than chest compressions with rescue breathing.