The leading cause of death in the US according to the Center for Disease Control (CDC.gov) is Cardiovascular disease. It is important to keep in mind, that applying Cardiopulmonary Resuscitation (CPR) and First-Aid can occur in many ways. If a person has drowned, had a heart attack, had a stroke, went into cardiac arrest or is choking—proper training could mean the difference between life and death of a patient. If the patient isn’t breathing, is unconscious or has no pulse CPR should be applied immediately. Always remember, proper CPR begins with chest compressions.
It’s important to note: that death is most likely to occur after 10 minutes of loss of oxygen to the brain. From 6 to 10 minutes brain damage is expected. From 4 to 6 minutes brain damage is very possible and from 0 to 4 minutes brain damage is virtually non-existent.